- Flashbench-results - lists.linaro.org

by Peter Warasin

hi guys tests for a kingston 2GB micro SD card BTW: must these tests been done on a partition which is 4MiB aligned? $ cat /sys/kernel/debug/mmc0/ios clock: 50000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ head /sys/block/mmcblk0/device/{c*,scr,*rev,*id,serial,*size*,name,date} ==> /sys/block/mmcblk0/device/cid <== 02544d5341303247052087b4c800a800 ==> /sys/block/mmcblk0/device/csd <== 002e00325b5aa3acffffff800a800000 ==> /sys/block/mmcblk0/device/scr <== 0225800001000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x5 ==> /sys/block/mmcblk0/device/hwrev <== 0x0 ==> /sys/block/mmcblk0/device/cid <== 02544d5341303247052087b4c800a800 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /sys/block/mmcblk0/device/serial <== 0x2087b4c8 head: cannot open `/sys/block/mmcblk0/device/*size*' for reading: No such file or directory ==> /sys/block/mmcblk0/device/name <== SA02G ==> /sys/block/mmcblk0/device/date <== 08/2010 $ sfdisk -s /dev/mmcblk0 1927168 ./flashbench -a --blocksize=1024 /dev/mmcblk0p3 align 134217728 pre 1.69ms on 1.86ms post 1.29ms diff 375µs align 67108864 pre 1.87ms on 2.04ms post 1.35ms diff 432µs align 33554432 pre 1.91ms on 2.08ms post 1.35ms diff 455µs align 16777216 pre 1.83ms on 2ms post 1.32ms diff 426µs align 8388608 pre 1.83ms on 2ms post 1.32ms diff 426µs align 4194304 pre 1.77ms on 1.97ms post 1.29ms diff 441µs align 2097152 pre 1.8ms on 1.97ms post 1.29ms diff 425µs align 1048576 pre 1.51ms on 1.98ms post 1.29ms diff 579µs align 524288 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 262144 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 131072 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 65536 pre 1.26ms on 1.44ms post 1.29ms diff 164µs align 32768 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 16384 pre 1.29ms on 1.45ms post 1.27ms diff 168µs align 8192 pre 1.29ms on 1.46ms post 1.29ms diff 177µs align 4096 pre 1.29ms on 1.33ms post 1.29ms diff 40µs align 2048 pre 1.29ms on 1.33ms post 1.29ms diff 39.4µs i assume i see the erase-block size where pre value is smallest (??) erase-block size 64Kib? that can't possible be, can it? $ ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 4MiB 5.94M/s 2MiB 4.21M/s 1MiB 4.26M/s 512KiB 3.27M/s 256KiB 4.27M/s 128KiB 5.91M/s 64KiB 10.3M/s 32KiB 8.76M/s 16KiB 7.06M/s $ ./flashbench --open-au --open-au-nr=2 /dev/mmcblk0p3 4MiB 9.87M/s 2MiB 10.1M/s 1MiB 4.54M/s 512KiB 1.97M/s 256KiB 945K/s 128KiB 464K/s 64KiB 213K/s 32KiB 112K/s 16KiB 55.4K/s $ ./flashbench --open-au --open-au-nr=3 /dev/mmcblk0p3 4MiB 8.18M/s 2MiB 9.97M/s 1MiB 4.42M/s 512KiB 1.96M/s 256KiB 942K/s 128KiB 463K/s 64KiB 218K/s 32KiB 111K/s 16KiB 55.5K/s means the card can handle only 1 block at once, does it? because performance is constant only with 1 block and 4MiB erase-block should be fine (?) ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[1 * 1024 * 1024] 1MiB 2.72M/s 512KiB 1.97M/s 256KiB 1.98M/s 128KiB 1.97M/s 64KiB 4.25M/s 32KiB 4.03M/s 16KiB 3.6M/s $./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[2 * 1024 * 1024] 2MiB 9.97M/s 1MiB 2.26M/s 512KiB 1.97M/s 256KiB 2.71M/s 128KiB 4.23M/s 64KiB 1.78M/s 32KiB 5.19M/s 16KiB 7.08M/s ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[4 * 1024 * 1024] 4MiB 6.03M/s 2MiB 4.27M/s 1MiB 3.26M/s 512KiB 3.32M/s 256KiB 3.33M/s 128KiB 6M/s 64KiB 10.3M/s 32KiB 8.96M/s 16KiB 7.05M/s so, 2MiB is better, is it? hmm, does that turbo-boost at 64KiB mean that's the correct page size? tests with --random: $ ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[2 * 1024 * 1024] --random 2MiB 4.27M/s 1MiB 1.76M/s 512KiB 998K/s 256KiB 633K/s 128KiB 419K/s 64KiB 325K/s 32KiB 177K/s 16KiB 86.1K/s $ ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[4 * 1024 * 1024] --random 4MiB 5.99M/s 2MiB 2.01M/s 1MiB 2.92M/s 512KiB 1.2M/s 256KiB 605K/s 128KiB 318K/s 64KiB 241K/s 32KiB 129K/s 16KiB 65.2K/s ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[1 * 1024 * 1024] --random 1MiB 2.75M/s 512KiB 804K/s 256KiB 984K/s 128KiB 377K/s 64KiB 265K/s 32KiB 186K/s 16KiB 78.8K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[1536 * 1024] --blocksize=$[96 * 1024] 1.5MiB 3.57M/s 768KiB 1.02M/s 384KiB 1.53M/s 192KiB 546K/s 96KiB 311K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[3072 * 1024] --blocksize=$[96 * 1024] 3MiB 5.34M/s 1.5MiB 2.29M/s 768KiB 2.1M/s 384KiB 888K/s 192KiB 470K/s 96KiB 233K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[6144 * 1024] --blocksize=$[96 * 1024] 6MiB 6.97M/s 3MiB 2.9M/s 1.5MiB 2.61M/s 768KiB 1.49M/s 384KiB 881K/s 192KiB 442K/s 96KiB 216K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[8192 * 1024] --blocksize=$[64 * 1024] 8MiB 7.63M/s 4MiB 3.33M/s 2MiB 3.71M/s 1MiB 2.58M/s 512KiB 1.19M/s 256KiB 604K/s 128KiB 282K/s 64KiB 242K/s hope these numbers help somehow.. i'm lost in numbers now :) peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years

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3
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Re: [Flashbench] flashbench sandisk 4GB class4

by Peter Warasin

[i do not shorten this msg because it was not going to the list because i did not reply to list] On 08/07/11 22:41, Arnd Bergmann wrote: > On Friday 08 July 2011 19:36:56 Peter Warasin wrote: >> Hi Arnd >> >> thank you for your help! >> >> On 08/07/11 16:55, Arnd Bergmann wrote: >>> but there is a problem using three or more. However, the >>> performance is still basically constant, so the card is >>> doing something smart. It's probably using the new Sandisk >>> trick with SLC and MLC areas. On the one hand, this is >> >> ah, so the journaling of ext3 *should* not be a problem, right? > > The journaling normally makes things worse, but by how much > depends on the card characteristics. Sometimes it's almost > nothing, sometimes it's orders of magnitude. In this case, > the answer is probably "noticeable, but not drastic". > >>> good news, because the card doesn't behave that badly, >>> on the other hand it's not easy to measure and the baseline >>> of 2 MB/s is rather slow. >> >> I see. So this means aligning to 4MB is a good thing? >> Or does this simply mean i can write 2 blocks at once? > > 4 MB alignment is always the right thing. > >>> It's still not all that bad. If you want to try other things, >>> first of all try the same with the class 10 card. Also, add the >>> '--random' flag to see if it changes anything. Any measurements >>> with '--random' are more likely to be useful than those without, >>> but it may be that the class 10 card won't like that argument >>> and becomes extremely slow. >> >> our class10 is a transcend card, so making tests with this card is like >> comparing apples with pears i think. maybe the quality of that card is >> also not the best. >> we try to get a class6 and class10 sandisk > > Transcend cards vary extremely in their quality. Even comparing two > Transcend cards with identical labels can sometimes be apples and > oranges (or pears). Some that I've seen are quite ok, others are > absolutely horrible. > > If you want to experiment more with flashbench, I suggest trying the > transcend card first, it will give you much more understandable > results, because in my experience the controllers are so much simpler > there. ok, will try that monday and send results.. >> but what --random does, isn't that more likely what a normal system does >> on the SD card when i have /var and swap on the SD card? >> so this means it is quite normal that it will be very slow, is it? > > Yes. If the card is this bad at random access, it won't work well with > Linux at all. You can either try to get a better card right away, or > continue figuring out what the card actually does. It's getting quite > interesting here, I think. > >> same test with --random: >> >> ./flashbench -O --open-au-nr=2 --random /dev/mmcblk0p3 >> 4MiB 839K/s >> 2MiB 3.26M/s >> 1MiB 8.7M/s >> 512KiB 1.48M/s >> 256KiB 731K/s >> 128KiB 952K/s >> 64KiB 1.18M/s >> 32KiB 594K/s >> 16KiB 356K/s >> >> i guess i should align to 1MB then? > > No, different issue. This card is rather tricky and what it probably > does is clean during long writes after smaller writes. If you > do "./flashbench -O --open-au-nr=2 --random /dev/mmcblk0p3 --blocksize=$[1024*1024]" > a few times repeatedly, it should get better at the second or third > run. You can normally ignore any odd results in the first one or > two rows of a test run for this reason. yes, it does, however it has very varying values when starting it a couple of times. from 2x faster to all slow. is the garbage collector slow and running all the time after 2nd try? # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 2.16M/s 2MiB 2.86M/s 1MiB 4.2M/s 512KiB 1.47M/s 256KiB 735K/s 128KiB 904K/s 64KiB 1.12M/s 32KiB 550K/s 16KiB 360K/s # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 3.5M/s 2MiB 6.58M/s 1MiB 9.5M/s 512KiB 1.49M/s 256KiB 734K/s 128KiB 986K/s 64KiB 1.17M/s 32KiB 589K/s 16KiB 369K/s # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 647K/s 2MiB 603K/s 1MiB 604K/s 512KiB 631K/s 256KiB 745K/s 128KiB 987K/s 64KiB 1.17M/s 32KiB 588K/s 16KiB 309K/s # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 652K/s 2MiB 599K/s 1MiB 604K/s 512KiB 636K/s 256KiB 736K/s 128KiB 1M/s 64KiB 1.16M/s 32KiB 540K/s 16KiB 352K/s what i also noticed on this card is that the card is running with legacy timing instead of high-speed: cat /sys/kernel/debug/mmc0/ios clock: 25000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 0 (legacy) i tried to figure out why, but most probably i guess the card will respond with SCR_SPEC_VER_1 for sda_vsn i *think*, since the controller (marvell/mvsdio) is MMC_CAP_SD_HIGHSPEED capable and i see no kernel warnings that the card is not able to do mandatory switch function will try to hardcode to SD_HIGHSPEED next week.. (for testing) could that help or is it completely irrelevant? > The result can mean one of two things: > > * the erase block size is something other than 4 MB, and you first need > to figure out the correct size to rerun it. > * The card can not actually do random writes at all, which is unusual > for Sandisk cards, but is something I've seen before in a few cases. > >> ./flashbench -O --open-au-nr=3 --random /dev/mmcblk0p3 >> 4MiB 2.84M/s >> 2MiB 2.46M/s >> 1MiB 5.23M/s >> 512KiB 1.33M/s >> 256KiB 697K/s >> 128KiB 1.08M/s >> 64KiB 904K/s >> 32KiB 534K/s >> 16KiB 360K/s >> >> ./flashbench -O --open-au-nr=5 --random /dev/mmcblk0p3 >> 4MiB 2.87M/s >> 2MiB 2.56M/s >> 1MiB 1.71M/s >> 512KiB 1.78M/s >> 256KiB 920K/s >> 128KiB 471K/s >> 64KiB 320K/s >> 32KiB 276K/s >> 16KiB 215K/s > > Not much to see here, it only shows that the card isn't all > that great for random access. > >>> You can get measurements for smaller block sizes in addition to >>> the values down to 16KB by passing --blocksize=512. This may get >>> rather slow towards the end, but is very relevant because the >>> block size used by ext3 is only 4KiB. >> >> ah great. >> ok, did i understand right that i do this tests for figuring out the >> actual values of erase block size and blocksize? >> when i know those values, what do i do with them? align partitions to >> erase block size and format filesystem with SD blocksize (if possible)? > > Correct for erasesize, that should be the partition alignment. Possible > values here are 1.5MB, 2MB, 3MB, 4MB, 6MB and 8 MB, I haven't seen > anything else with SD cards yet. > > The blocksize argument you pass to flashbench only affects how many > tests are done. By default, it assumes blocksize=16384 and stops there, aaah, i understand. > but you can pass any other blocksize that is a multiple of 512 > and a power-of-two fraction of the erasesize. When you pass blocksize=512, > flashbench will print five more lines of output, but typically get > very slow. The blocksize that you should use in the file system is the > smallest number where flashbench gives a non-catastrophic result. > Often you see something like > > ... > 64KiB 3.2M/s > 32KiB 2.0M/s > 16KiB 1.6M/s > 8KiB 821K/s > 4KiB 401K/s > 2KiB 198K/s > 1KiB 90K/s > 512 43K/s > > In that example, the block size would be 16KB: As you can see, writing > an 8KB block actually takes longer than writing a 16KB block, so it's > never worth it from a performance PoV. > >> i guess ideal for the SD card performance would be to format with 4MiB >> blocksize, but that's impossible with ext3 and bad for me because i >> waste to much space with small files, right? > > The largest block size supported by any Linux file system today is 4KB, > but we're working on increasing that to 64KB, which is quite wasteful. ah good. so right now best i can do is using 4k blocksize for the filesystem, even when this is not the ideal size. >> is the copy-on-write feature of btrfs maybe helping? > > definitely. great. will do that >> what about swap .. does it make sense creating a swap with >> 4MiB pagesize? > > You can't. The swap page size is a property of the CPU, you don't get to > choose it. ah ok. >> last question, hope i do not stress you to much: > > Don't worry. But please try to figure out any cards that you have access > to and send the results to the mailing list, so I can add it to the > database. We have around 100 devices in there today, but every new > addition helps make us the right choices when optimizing the file > systems. ah well, will do my best when we get new cards, which i hope, since i have to solve this problem somehow :) >> during bonnie tests we had a high cpu load (90%),.. and during normal >> operation of the system iowait is going up really high (90%) which >> freezes the system then >> >> is that normal? shouldn't most calculation being done by the >> microcontroller on the SD chip? > > I haven't tried it, but bonnie is really totally useless on SD cards, > and it's absolutely possible that this is always the case. it's always the case, that the cpu load is that high only with bonnie, or under normal circumstances? i ask because someone on #linaro asked me if the device is probably not dma enabled or in 1-bit mode, which would make sense i think that if it is not dma enabled it uses cpu for everything.. however, i figured out that it is not in 1-bit mode, it is in 4-bit mode, good i guess .. but i was not able how to figure out if it is dma enabled or not. i found nothing in sourcecode but how to disable dma during loading the module, which does not apply, since the driver is compiled in. peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years

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Verbatim Executive Metal 8GB USB

by Arnd Bergmann

arnd@wuerfel:~/flashbench$ sudo fdisk -lu /dev/sdd Disk /dev/sdd: 8011 MB, 8011120640 bytes 41 heads, 41 sectors/track, 9307 cylinders, total 15646720 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xd45371da Device Boot Start End Blocks Id System /dev/sdd1 8064 15646719 7819328 c W95 FAT32 (LBA) arnd@wuerfel:~ $ lsusb Bus 001 Device 016: ID 18a5:0240 Verbatim, Ltd arnd@wuerfel:~/flashbench$ sudo dosfsck /dev/sdd1 dosfsck 3.0.9, 31 Jan 2010, FAT32, LFN Free cluster summary uninitialized (should be 244224) /dev/sdd1: 1 files, 1/244225 clusters arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdd --blocksize=1024 --count=32 align 1073741824 pre 544µs on 810µs post 564µs diff 257µs align 536870912 pre 565µs on 811µs post 565µs diff 246µs align 268435456 pre 558µs on 814µs post 564µs diff 253µs align 134217728 pre 558µs on 809µs post 563µs diff 248µs align 67108864 pre 562µs on 816µs post 566µs diff 252µs align 33554432 pre 566µs on 814µs post 566µs diff 248µs align 16777216 pre 568µs on 817µs post 567µs diff 250µs align 8388608 pre 561µs on 799µs post 566µs diff 235µs align 4194304 pre 561µs on 781µs post 551µs diff 225µs align 2097152 pre 561µs on 763µs post 566µs diff 200µs align 1048576 pre 562µs on 762µs post 565µs diff 199µs align 524288 pre 561µs on 763µs post 566µs diff 200µs align 262144 pre 562µs on 762µs post 565µs diff 198µs align 131072 pre 562µs on 746µs post 566µs diff 182µs align 65536 pre 561µs on 729µs post 565µs diff 167µs align 32768 pre 561µs on 764µs post 564µs diff 201µs align 16384 pre 562µs on 762µs post 567µs diff 198µs align 8192 pre 548µs on 657µs post 550µs diff 108µs align 4096 pre 562µs on 657µs post 550µs diff 101µs align 2048 pre 558µs on 648µs post 559µs diff 89.6µs arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=1024 --open-au --open-au-nr=1 --erasesize=4194304 4MiB 13.5M/s 2MiB 4.29M/s 1MiB 12.8M/s 512KiB 4.17M/s 256KiB 11.5M/s 128KiB 3.97M/s 64KiB 4.38M/s 32KiB 11.9M/s 16KiB 2.82M/s 8KiB 1.4M/s 4KiB 713K/s 2KiB 360K/s 1KiB 181K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --open-au-nr=1 --erasesize=8388608 8MiB 14.5M/s 4MiB 13.2M/s 2MiB 13.5M/s 1MiB 13.6M/s 512KiB 13.6M/s 256KiB 12.6M/s 128KiB 11.1M/s 64KiB 16.9M/s 32KiB 11.9M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --open-au-nr=1 --erasesize=8388608 --random 8MiB 13.7M/s 4MiB 9.02M/s 2MiB 6.16M/s 1MiB 6.24M/s 512KiB 4.05M/s 256KiB 4.54M/s 128KiB 3.8M/s 64KiB 6.52M/s 32KiB 5.97M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --erasesize=8388608 --open-au-nr=2 8MiB 13.9M/s 4MiB 13.6M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 13.3M/s 256KiB 12.5M/s 128KiB 11.1M/s 64KiB 15.7M/s 32KiB 11.2M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --erasesize=8388608 --open-au-nr=4 8MiB 14.2M/s 4MiB 13.3M/s 2MiB 13.3M/s 1MiB 13.3M/s 512KiB 13.2M/s 256KiB 12.2M/s 128KiB 11.2M/s 64KiB 15.2M/s 32KiB 11.2M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --erasesize=8388608 --open-au-nr=6 8MiB 13.9M/s 4MiB 13.3M/s 2MiB 13.1M/s 1MiB 13.4M/s 512KiB 13.4M/s 256KiB 12.3M/s 128KiB 11.2M/s 64KiB 15.3M/s 32KiB 11.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=8 --blocksize=1048576 8MiB 13.5M/s 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=10 --blocksize=1048576 8MiB 13.6M/s 4MiB 13.3M/s 2MiB 13.2M/s 1MiB 13.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=12 --blocksize=1048576 8MiB 13.5M/s 4MiB 13.4M/s 2MiB 13.1M/s 1MiB 13.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=14 --blocksize=1048576 8MiB 13.4M/s 4MiB 11.7M/s 2MiB 9.3M/s 1MiB 5.71M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=16 --blocksize=1048576 8MiB 13.8M/s 4MiB 10.6M/s 2MiB 5.95M/s 1MiB 4.14M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=512 --open-au --erasesize=8388608 --open-au-nr=13 8MiB 13.4M/s 4MiB 12.4M/s 2MiB 10.8M/s 1MiB 8.27M/s 512KiB 5.8M/s 256KiB 3.5M/s 128KiB 1.96M/s 64KiB 1.1M/s 32KiB 560K/s 16KiB 2.6M/s 8KiB 1.29M/s 4KiB 655K/s 2KiB 330K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=8192 --open-au --erasesize=8388608 --open-au-nr=12 --random 8MiB 13.4M/s 4MiB 9.03M/s 2MiB 6.17M/s 1MiB 6.24M/s 512KiB 4.06M/s 256KiB 4.54M/s 128KiB 3.8M/s 64KiB 6.47M/s 32KiB 5.79M/s 16KiB 2.72M/s 8KiB 1.33M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=8192 --open-au --erasesize=8388608 --open-au-nr=13 --random 8MiB 13.5M/s 4MiB 8.81M/s 2MiB 5.43M/s 1MiB 3.81M/s 512KiB 2.27M/s 256KiB 1.34M/s 128KiB 860K/s 64KiB 481K/s 32KiB 229K/s 16KiB 2.46M/s 8KiB 1.23M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=8192 --open-au --erasesize=8388608 --open-au-nr=12 --random --offset=$[20 * 1024 * 1024] [sudo] password for arnd: 8MiB 10.5M/s 4MiB 5.59M/s

14 years

1
1
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flashbench sandisk 4GB class4

by Peter Warasin

hi arnd and list here are my values for 4GB class4 sandisk on armv5tel (marvell kirkwood Feroceon 88FR131 rev 1 (v5l)) running 2.6.32.29 cat /sys/block/mmcblk*/device/{manfid,oemid,name,serial,date} 0x000003 0x5344 SU04G 0x03a847f0 10/2010 ./flashbench -O --open-au-nr=1 /dev/mmcblk0p3 4MiB 9.06M/s 2MiB 9.23M/s 1MiB 8.88M/s 512KiB 9M/s 256KiB 8.86M/s 128KiB 9.48M/s 64KiB 9.48M/s 32KiB 8.29M/s 16KiB 3.14M/s ./flashbench -O --open-au-nr=2 /dev/mmcblk0p3 4MiB 2.08M/s 2MiB 2.21M/s 1MiB 6.72M/s 512KiB 9.4M/s 256KiB 8.72M/s 128KiB 9.04M/s 64KiB 9.49M/s 32KiB 8.31M/s 16KiB 2.34M/s ./flashbench -O --open-au-nr=3 /dev/mmcblk0p3 4MiB 2.79M/s 2MiB 2.36M/s 1MiB 2.39M/s 512KiB 3.04M/s 256KiB 2.31M/s 128KiB 2.04M/s 64KiB 2.48M/s 32KiB 2.06M/s 16KiB 1.32M/s ./flashbench -O --open-au-nr=4 /dev/mmcblk0p3 4MiB 3.34M/s 2MiB 2.32M/s 1MiB 2.37M/s 512KiB 2.46M/s 256KiB 1.52M/s 128KiB 3.17M/s 64KiB 2.44M/s 32KiB 1.88M/s 16KiB 1.01M/s ./flashbench -O --open-au-nr=5 /dev/mmcblk0p3 4MiB 1.86M/s 2MiB 2.18M/s 1MiB 1.96M/s 512KiB 1.73M/s 256KiB 1.49M/s 128KiB 1.82M/s 64KiB 2.12M/s 32KiB 1.73M/s 16KiB 829K/s ./flashbench -O --open-au-nr=8 /dev/mmcblk0p3 4MiB 2M/s 2MiB 2.09M/s 1MiB 1.27M/s 512KiB 875K/s 256KiB 836K/s 128KiB 946K/s 64KiB 978K/s 32KiB 788K/s 16KiB 708K/s ./flashbench -O --open-au-nr=10 /dev/mmcblk0p3 4MiB 1.53M/s 2MiB 1.92M/s 1MiB 1.15M/s 512KiB 723K/s 256KiB 710K/s 128KiB 562K/s 64KiB 579K/s 32KiB 270K/s 16KiB 245K/s thank you in advance peter (aka _r3_@freenode) -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years

2
2
0 0

PQI microSD 8GB (2009)

by Arnd Bergmann

Disk /dev/mmcblk0: 8017 MB, 8017412096 bytes 255 heads, 63 sectors/track, 974 cylinders, total 15659008 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/mmcblk0p1 63 524350 262144 b W95 FAT32 Partition 1 has different physical/logical endings: phys=(1023, 254, 63) logical=(32, 163, 2) /dev/mmcblk0p2 524412 15658964 7567276+ 83 Linux ==> /sys/block/mmcblk0/device/block <== head: error reading `/sys/block/mmcblk0/device/block': Is a directory ==> /sys/block/mmcblk0/device/cid <== 1a505175534420201025503155009200 ==> /sys/block/mmcblk0/device/csd <== 400e00325f5900003bbb7f800a400000 ==> /sys/block/mmcblk0/device/date <== 02/2009 ==> /sys/block/mmcblk0/device/driver <== head: error reading `/sys/block/mmcblk0/device/driver': Is a directory ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/manfid <== 0x00001a ==> /sys/block/mmcblk0/device/name <== uSD ==> /sys/block/mmcblk0/device/oemid <== 0x5051 ==> /sys/block/mmcblk0/device/power <== head: error reading `/sys/block/mmcblk0/device/power': Is a directory ==> /sys/block/mmcblk0/device/scr <== 0235000000000000 ==> /sys/block/mmcblk0/device/serial <== 0x25503155 ==> /sys/block/mmcblk0/device/subsystem <== head: error reading `/sys/block/mmcblk0/device/subsystem': Is a directory ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=uSD MODALIAS=mmc:block arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=32 align 805306368 pre 597µs on 677µs post 576µs diff 90.1µs align 536870912 pre 579µs on 691µs post 590µs diff 106µs align 402653184 pre 587µs on 648µs post 580µs diff 64.9µs align 268435456 pre 600µs on 688µs post 585µs diff 95.5µs align 201326592 pre 590µs on 677µs post 584µs diff 90µs align 134217728 pre 591µs on 683µs post 587µs diff 94.2µs align 100663296 pre 598µs on 687µs post 590µs diff 93µs align 67108864 pre 593µs on 679µs post 588µs diff 88.5µs align 50331648 pre 592µs on 693µs post 592µs diff 100µs align 33554432 pre 595µs on 685µs post 594µs diff 90µs align 25165824 pre 594µs on 688µs post 586µs diff 98.4µs align 16777216 pre 586µs on 676µs post 596µs diff 85µs align 12582912 pre 595µs on 683µs post 589µs diff 91.2µs align 8388608 pre 591µs on 689µs post 591µs diff 97.8µs align 6291456 pre 578µs on 682µs post 586µs diff 99.4µs align 4194304 pre 598µs on 696µs post 596µs diff 98.8µs align 3145728 pre 585µs on 657µs post 606µs diff 61.7µs align 2097152 pre 605µs on 678µs post 578µs diff 86.2µs align 1572864 pre 582µs on 656µs post 600µs diff 65.6µs align 1048576 pre 584µs on 657µs post 607µs diff 61.6µs align 786432 pre 590µs on 652µs post 604µs diff 54.9µs align 524288 pre 583µs on 650µs post 599µs diff 59µs align 393216 pre 588µs on 649µs post 599µs diff 55.6µs align 262144 pre 582µs on 646µs post 600µs diff 55µs ^C arnd@klappe2:~/git/flashbench$ ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=1 2MiB 4.48M/s 1MiB 4.15M/s 512KiB 4.16M/s 256KiB 4.45M/s 128KiB 4.76M/s 64KiB 8.51M/s 32KiB 7.23M/s 16KiB 6.18M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=1 2MiB 8.79M/s 1MiB 4.22M/s 512KiB 4.19M/s 256KiB 4.46M/s 128KiB 4.76M/s 64KiB 8.73M/s 32KiB 7.73M/s 16KiB 6.43M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=2 2MiB 8.71M/s 1MiB 6.25M/s 512KiB 8.8M/s 256KiB 8.84M/s 128KiB 8.82M/s 64KiB 8.79M/s 32KiB 7.79M/s 16KiB 6.4M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=4 2MiB 8.71M/s 1MiB 6.27M/s 512KiB 8.65M/s 256KiB 8.76M/s 128KiB 8.71M/s 64KiB 8.65M/s 32KiB 7.61M/s 16KiB 6.23M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=6 2MiB 8.82M/s 1MiB 4.86M/s 512KiB 2.06M/s 256KiB 1.15M/s 128KiB 617K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=5 2MiB 5.31M/s 1MiB 7.51M/s 512KiB 8.74M/s 256KiB 8.7M/s 128KiB 8.77M/s 64KiB 8.71M/s 32KiB 7.62M/s 16KiB 6.23M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=5 --blocksize=512 2MiB 8M/s 1MiB 8.74M/s 512KiB 8.82M/s 256KiB 8.86M/s 128KiB 8.8M/s 64KiB 8.73M/s 32KiB 7.6M/s 16KiB 5.67M/s 8KiB 3.57M/s 4KiB 1.77M/s 2KiB 847K/s 1KiB 428K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=5 --blocksize=512 --random 2MiB 7.04M/s 1MiB 4.17M/s 512KiB 4.09M/s 256KiB 4.21M/s 128KiB 4.2M/s 64KiB 4.17M/s 32KiB 3.5M/s 16KiB 2.78M/s 8KiB 1.83M/s 4KiB 984K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=6 --blocksize=512 --random 2MiB 5.26M/s 1MiB 4.43M/s 512KiB 2.17M/s 256KiB 1.18M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --blocksize=512 --findfat --random --fat-nr=9 2MiB 4.98M/s 8.8M/s 4.92M/s 4.94M/s 4.93M/s 4.9M/s 8.85M/s 8.93M/s 8.87M/s 1MiB 4.28M/s 4.22M/s 4.28M/s 4.25M/s 4.23M/s 3.09M/s 3.22M/s 3.03M/s 3.08M/s 512KiB 3.08M/s 3M/s 3.5M/s 3.04M/s 3.07M/s 3.07M/s 3.07M/s 3.09M/s 3.06M/s 256KiB 3.06M/s 3.09M/s 3.07M/s 3.06M/s 3.07M/s 3.06M/s 3.08M/s 3.06M/s 3.07M/s 128KiB 3.06M/s 3.04M/s 3.05M/s 3.05M/s 3.05M/s 3.06M/s 3.05M/s 3.08M/s 3.06M/s 64KiB 3.03M/s 3.05M/s 3.06M/s 3.06M/s 3.09M/s 3.06M/s 3.06M/s 3.03M/s 3.06M/s 32KiB 2.69M/s 2.7M/s 2.68M/s 2.71M/s 2.69M/s 2.71M/s 2.71M/s 2.69M/s 2.69M/s

14 years

1
0
0 0

Transcend CF 4 GB 133x

by Arnd Bergmann

arnd@wuerfel:~/flashbench$ sudo fdisk -lu /dev/sdc Disk /dev/sdc: 4009 MB, 4009549824 bytes 255 heads, 63 sectors/track, 487 cylinders, total 7831152 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x001c2022 Device Boot Start End Blocks Id System /dev/sdc1 * 63 7830143 3915040+ b W95 FAT32 Partition 1 has different physical/logical endings: phys=(1023, 254, 63) logical=(487, 102, 63) arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize 1024 align 536870912 pre 615µs on 744µs post 497µs diff 188µs align 268435456 pre 607µs on 743µs post 530µs diff 174µs align 134217728 pre 618µs on 744µs post 535µs diff 167µs align 67108864 pre 618µs on 745µs post 574µs diff 149µs align 33554432 pre 618µs on 743µs post 500µs diff 185µs align 16777216 pre 621µs on 748µs post 518µs diff 178µs align 8388608 pre 618µs on 745µs post 517µs diff 177µs align 4194304 pre 628µs on 758µs post 551µs diff 168µs align 2097152 pre 549µs on 659µs post 568µs diff 100µs align 1048576 pre 553µs on 655µs post 550µs diff 104µs align 524288 pre 534µs on 658µs post 535µs diff 124µs align 262144 pre 536µs on 656µs post 535µs diff 120µs align 131072 pre 591µs on 655µs post 618µs diff 50.2µs align 65536 pre 567µs on 656µs post 569µs diff 88.2µs align 32768 pre 553µs on 657µs post 534µs diff 113µs align 16384 pre 553µs on 653µs post 569µs diff 92.4µs align 8192 pre 551µs on 656µs post 550µs diff 105µs align 4096 pre 534µs on 658µs post 535µs diff 124µs align 2048 pre 545µs on 656µs post 569µs diff 98.7µs arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=4194304 --blocksi=512 --open-au --open-au-nr=1 4MiB 10.7M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.4M/s 256KiB 10.8M/s 128KiB 9.66M/s 64KiB 11.8M/s 32KiB 10.1M/s 16KiB 8.22M/s 8KiB 3.74M/s 4KiB 1.83M/s 2KiB 900K/s 1KiB 451K/s 512B 224K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=2 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.5M/s 256KiB 10.5M/s 128KiB 9.07M/s 64KiB 10.1M/s 32KiB 7.75M/s 16KiB 5.43M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=4 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.5M/s 256KiB 10.5M/s 128KiB 8.98M/s 64KiB 10M/s 32KiB 7.71M/s 16KiB 5.42M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=6 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.6M/s 512KiB 10.6M/s 256KiB 10.4M/s 128KiB 8.96M/s 64KiB 10M/s 32KiB 7.68M/s 16KiB 5.39M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=1024 --open-au --open-au-nr=11 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.5M/s 256KiB 10.4M/s 128KiB 8.91M/s 64KiB 9.99M/s 32KiB 7.62M/s 16KiB 5.33M/s 8KiB 2.45M/s 4KiB 1.17M/s 2KiB 579K/s 1KiB 285K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=12 4MiB 10.7M/s 2MiB 4.52M/s 1MiB 1.13M/s 512KiB 561K/s 256KiB 283K/s 128KiB 142K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=4194304 --blocksize=512 --open-au --open-au-nr=1 --random 4MiB 11M/s 2MiB 3.01M/s 1MiB 9.02M/s 512KiB 3.04M/s 256KiB 3.04M/s 128KiB 1.77M/s 64KiB 9.46M/s 32KiB 3.04M/s 16KiB 2.86M/s 8KiB 1.3M/s 4KiB 870K/s 2KiB 426K/s 1KiB 211K/s 512B 105K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=1024 --open-au --open-au-nr=11 --random 4MiB 10.7M/s 2MiB 3.03M/s 1MiB 3.22M/s 512KiB 3.03M/s 256KiB 3M/s 128KiB 2.68M/s 64KiB 3.12M/s 32KiB 2.77M/s 16KiB 2.4M/s 8KiB 1.43M/s 4KiB 706K/s (reverse-i-search)`da': sudo fdisk -l /dev/s^Carnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=1024 --open-au --open-au-nr=12 --random 4MiB 8.91M/s 2MiB 3.08M/s 1MiB 1.19M/s 512KiB 569K/s ^Carnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304 * 2] --ocksize=1024 --open-au --open-au-nr=6 --random 8MiB 10M/s 4MiB 9.01M/s 2MiB 3.71M/s 1MiB 1.46M/s 512KiB 897K/s arnd@wuerfel:~/flashbench$ sudo dd if=/dev/zero of=/dev/sdc bs=1M count=100 oflag=direct 100+0 records in 100+0 records out 104857600 bytes (105 MB) copied, 10.8724 s, 9.6 MB/s

14 years, 1 month

1
2
0 0

Adata S102 USB3.0 8GB

by Arnd Bergmann

Bus 002 Device 002: ID 125f:312a A-DATA Technology Co., Ltd. arnd@klappe2:~$ sudo hexdump -C /dev/sdc 00000000 eb 58 90 4d 53 44 4f 53 35 2e 30 00 02 08 22 00 |.X.MSDOS5.0...".| 00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 00 00 00 |........?.......| 00000020 00 80 eb 00 c3 3a 00 00 00 00 00 00 02 00 00 00 |.....:..........| 00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000040 00 00 29 73 8b 36 a8 4e 4f 20 4e 41 4d 45 20 20 |..)s.6.NO NAME | 00000050 20 20 46 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | FAT32 3.....| 00000060 7b 8e c1 8e d9 bd 00 7c 88 4e 02 8a 56 40 b4 08 |{......|.N..V@..| 00000070 cd 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f |..s......f...(a)f.| 00000080 b6 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 |....?.......Af..| 00000090 c9 66 f7 e1 66 89 46 f8 83 7e 16 00 75 38 83 7e |.f..f.F..~..u8.~| 000000a0 2a 00 77 32 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 |*.w2f.F.f.......| 000000b0 01 00 e8 2b 00 e9 48 03 a0 fa 7d b4 7d 8b f0 ac |...+..H...}.}...| 000000c0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........| 000000d0 ee a0 fb 7d eb e5 a0 f9 7d eb e0 98 cd 16 cd 19 |...}....}.......| 000000e0 66 60 66 3b 46 f8 0f 82 4a 00 66 6a 00 66 50 06 |f`f;F...J.fj.fP.| 000000f0 53 66 68 10 00 01 00 80 7e 02 00 0f 85 20 00 b4 |Sfh.....~.... ..| 00000100 41 bb aa 55 8a 56 40 cd 13 0f 82 1c 00 81 fb 55 |A..U.V@........U| 00000110 aa 0f 85 14 00 f6 c1 01 0f 84 0d 00 fe 46 02 b4 |.............F..| 00000120 42 8a 56 40 8b f4 cd 13 b0 f9 66 58 66 58 66 58 |B.V@......fXfXfX| 00000130 66 58 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe |fX.*f3.f..N.f...| 00000140 c2 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a |...f..f....v....| 00000150 56 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 |V@............fa| 00000160 0f 82 54 ff 81 c3 00 02 66 40 49 0f 85 71 ff c3 |..T.....f@I..q..| 00000170 4e 54 4c 44 52 20 20 20 20 20 20 00 00 00 00 00 |NTLDR .....| 00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 52 65 |..............Re| 000001b0 6d 6f 76 65 20 64 69 73 6b 73 20 6f 72 20 6f 74 |move disks or ot| 000001c0 68 65 72 20 6d 65 64 69 61 2e ff 0d 0a 44 69 73 |her media....Dis| 000001d0 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 20 |k error...Press | 000001e0 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 61 |any key to resta| 000001f0 72 74 0d 0a 00 00 00 00 00 ac cb d8 00 00 55 aa |rt............U.| arnd@klappe2:~$ sudo fsck.msdos /dev/sdc dosfsck 3.0.9, 31 Jan 2010, FAT32, LFN /dev/sdc: 1 files, 1/1925451 clusters arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/sdc -b 1024 align 805306368 pre 581µs on 795µs post 581µs diff 214µs align 536870912 pre 588µs on 821µs post 592µs diff 231µs align 402653184 pre 594µs on 821µs post 596µs diff 226µs align 268435456 pre 583µs on 816µs post 593µs diff 228µs align 201326592 pre 581µs on 793µs post 585µs diff 209µs align 134217728 pre 583µs on 784µs post 582µs diff 202µs align 100663296 pre 581µs on 790µs post 581µs diff 209µs align 67108864 pre 579µs on 795µs post 581µs diff 215µs align 50331648 pre 582µs on 798µs post 585µs diff 214µs align 33554432 pre 576µs on 794µs post 579µs diff 217µs align 25165824 pre 581µs on 790µs post 582µs diff 208µs align 16777216 pre 584µs on 785µs post 573µs diff 206µs align 12582912 pre 578µs on 790µs post 570µs diff 216µs align 8388608 pre 579µs on 798µs post 580µs diff 218µs align 6291456 pre 580µs on 573µs post 579µs diff -6271ns align 4194304 pre 583µs on 795µs post 584µs diff 212µs align 3145728 pre 583µs on 575µs post 584µs diff -8901ns align 2097152 pre 573µs on 582µs post 583µs diff 4.12µs align 1572864 pre 578µs on 584µs post 585µs diff 2.43µs align 1048576 pre 580µs on 585µs post 585µs diff 2.36µs align 786432 pre 577µs on 583µs post 581µs diff 3.79µs align 524288 pre 581µs on 583µs post 576µs diff 5.01µs align 393216 pre 581µs on 585µs post 585µs diff 1.7µs align 262144 pre 577µs on 580µs post 584µs diff -1288ns align 196608 pre 574µs on 583µs post 582µs diff 4.71µs align 131072 pre 584µs on 577µs post 584µs diff -6945ns align 98304 pre 583µs on 578µs post 583µs diff -4843ns align 65536 pre 576µs on 579µs post 581µs diff 628ns align 49152 pre 583µs on 585µs post 583µs diff 1.78µs align 32768 pre 578µs on 583µs post 585µs diff 1.18µs align 24576 pre 572µs on 579µs post 577µs diff 4.39µs align 16384 pre 580µs on 583µs post 574µs diff 6.61µs align 12288 pre 575µs on 701µs post 583µs diff 122µs align 8192 pre 581µs on 585µs post 579µs diff 4.95µs align 6144 pre 580µs on 585µs post 584µs diff 2.52µs align 4096 pre 579µs on 705µs post 582µs diff 125µs align 3072 pre 580µs on 575µs post 580µs diff -4836ns align 2048 pre 571µs on 585µs post 584µs diff 7.55µs arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=512 --open-au --open-au-nr=1 4MiB 13.1M/s 2MiB 13.1M/s 1MiB 12.8M/s 512KiB 12.8M/s 256KiB 12.8M/s 128KiB 12.7M/s 64KiB 12.9M/s 32KiB 12.8M/s 16KiB 12.8M/s 8KiB 12.6M/s 4KiB 7.95M/s 2KiB 5.4M/s 1KiB 2.71M/s 512B 1.34M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=512 --open-au --open-au-nr=2 4MiB 13M/s 2MiB 12.8M/s 1MiB 12.8M/s 512KiB 12.7M/s 256KiB 12.6M/s 128KiB 12.3M/s 64KiB 11.7M/s 32KiB 10.8M/s 16KiB 9.36M/s 8KiB 5.63M/s 4KiB 1.16M/s 2KiB 590K/s 1KiB 294K/s 512B 151K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=4096 --open-au --open-au-nr=4 4MiB 13M/s 2MiB 12.8M/s 1MiB 12.8M/s 512KiB 12.7M/s 256KiB 12.6M/s 128KiB 12.3M/s 64KiB 11.8M/s 32KiB 10.8M/s 16KiB 9.38M/s 8KiB 5.66M/s 4KiB 856K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=8192 --open-au --open-au-nr=5 4MiB 12.9M/s 2MiB 10.2M/s 1MiB 9.29M/s 512KiB 8.85M/s 256KiB 8.6M/s 128KiB 8.38M/s 64KiB 8.09M/s 32KiB 7.57M/s 16KiB 6.64M/s 8KiB 4.37M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=8192 --open-au --open-au-nr=6 4MiB 12.8M/s 2MiB 9M/s 1MiB 7.83M/s 512KiB 7.33M/s 256KiB 7.07M/s 128KiB 6.86M/s 64KiB 6.66M/s 32KiB 6.27M/s 16KiB 5.59M/s 8KiB 3.34M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=8 4MiB 12.8M/s 2MiB 7.85M/s 1MiB 6.59M/s 512KiB 6.09M/s 256KiB 5.82M/s 128KiB 4.42M/s 64KiB 5.5M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=12 4MiB 12.9M/s 2MiB 6.97M/s 1MiB 5.68M/s 512KiB 3.09M/s 256KiB 3.01M/s 128KiB 4.81M/s 64KiB 4.34M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=16 4MiB 13M/s 2MiB 6.62M/s 1MiB 3.63M/s 512KiB 2.54M/s 256KiB 2.14M/s 128KiB 2.3M/s 64KiB 2.27M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=24 4MiB 12.9M/s 2MiB 5.67M/s 1MiB 1.66M/s 512KiB 750K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=$[512*1024] --open-au --open-au-nr=18 4MiB 12.1M/s 2MiB 6.26M/s 1MiB 2.66M/s 512KiB 1.69M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=$[256*1024] --open-au --open-au-nr=20 4MiB 12.7M/s 2MiB 6.4M/s 1MiB 2.83M/s 512KiB 1.78M/s 256KiB 1.48M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=16 --offset=$[24*1024*1024 + 65536] 256KiB 12.8M/s 128KiB 12.5M/s 64KiB 11.9M/s 32KiB 2.07M/s 16KiB 1.44M/s 8KiB 730K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=17 --offset=$[24*1024*1024 + 65536] 256KiB 2.22M/s 128KiB 204K/s 64KiB 183K/s 32KiB 79K/s 16KiB 37.2K/s 8KiB 18.7K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=20 --offset=$[24*1024*1024 + 65536] 256KiB 2.52M/s 128KiB 185K/s 64KiB 129K/s 32KiB 63.1K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=16 --offset=$[24*1024*1024 + 65536] --random 256KiB 13M/s 128KiB 12.6M/s 64KiB 12M/s 32KiB 11M/s 16KiB 9.42M/s 8KiB 638K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] /dev/sdc --blocksize=$[1024] --open-au --open-au-nr=4 --random 4MiB 12.9M/s 2MiB 13M/s 1MiB 7.82M/s 512KiB 4.96M/s 256KiB 4.18M/s 128KiB 3.73M/s 64KiB 3.66M/s 32KiB 3.45M/s 16KiB 2.77M/s 8KiB 1.56M/s 4KiB 791K/s 2KiB 401K/s 1KiB 205K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4 * 1024 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=16 --offset=$[24*1024*1024] --random 4MiB 13M/s 2MiB 6.6M/s 1MiB 2.52M/s 512KiB 1.97M/s 256KiB 1.12M/s 128KiB 1.35M/s

14 years, 1 month

1
0
0 0

Pls kindly check the new item -- T010 4 cards + 2.3 Scren Black berry style

by Picasa Web Albums

Dear Friend, Nice day to you! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver Anything more you want to know, please send us email. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 1 month

1
0
0 0

New item come out -- T010 4 cards + 2.3 Scren

by Picasa Web Albums

Dear Friend, Nice day to you! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver Anything more you want to know, please send us email. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 1 month

1
0
0 0

Pls kindly check the new item -- T010 4 cards + 2.3 Scren Black berry style

by Picasa Web Albums

Dear Friend, Nice day to you! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver Anything more you want to know, please send us email. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 1 month

1
0
0 0

Pls kindly check the new item -- T010 4 cards + 2.3 Scren Black berry style

by Picasa Web Albums

Dear Customer (Manager), Good day! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver If you need the detail requirement, please don't hesitate to contact us. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 1 month

1
0
0 0

Corsair Voyager 3.0 16GB

by Michael Monnerie

Just bought a new stick, is USB 3.0 capable, I only got a USB 2.0 slot for testing, these are the results: (kernel 2.6.38.6) # lsusb -v Bus 001 Device 005: ID 1b1c:1a00 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x1b1c idProduct 0x1a00 bcdDevice a.00 iManufacturer 1 Corsair iProduct 2 Voyager 3.0 iSerial 3 09021000000000000000001038 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Device Status: 0x0000 # ./flashbench -a /dev/sdd --blocksize=1024 align 4294967296 pre 868µs on 1.16ms post 866µs diff 290µs align 2147483648 pre 870µs on 1.28ms post 864µs diff 413µs align 1073741824 pre 865µs on 1.12ms post 864µs diff 252µs align 536870912 pre 855µs on 1.11ms post 866µs diff 253µs align 268435456 pre 863µs on 999µs post 854µs diff 140µs align 134217728 pre 866µs on 1.1ms post 863µs diff 233µs align 67108864 pre 858µs on 1.11ms post 865µs diff 254µs align 33554432 pre 866µs on 996µs post 867µs diff 129µs align 16777216 pre 868µs on 1.12ms post 867µs diff 252µs align 8388608 pre 867µs on 1.12ms post 865µs diff 253µs align 4194304 pre 819µs on 872µs post 865µs diff 29.9µs align 2097152 pre 837µs on 872µs post 862µs diff 23µs align 1048576 pre 852µs on 871µs post 870µs diff 9.95µs align 524288 pre 857µs on 870µs post 859µs diff 12.2µs align 262144 pre 842µs on 870µs post 866µs diff 15.7µs align 131072 pre 848µs on 867µs post 870µs diff 7.85µs align 65536 pre 852µs on 870µs post 859µs diff 14.6µs align 32768 pre 864µs on 866µs post 865µs diff 1.15µs align 16384 pre 861µs on 870µs post 867µs diff 5.94µs align 8192 pre 860µs on 989µs post 864µs diff 127µs align 4096 pre 868µs on 968µs post 865µs diff 101µs align 2048 pre 865µs on 869µs post 860µs diff 6.97µs # ./flashbench -a /dev/sdd --blocksize=$[256 * 1024] align 4294967296 pre 7.83ms on 8.15ms post 7.73ms diff 373µs align 2147483648 pre 7.84ms on 8.19ms post 7.77ms diff 388µs align 1073741824 pre 7.68ms on 7.87ms post 7.67ms diff 194µs align 536870912 pre 7.72ms on 7.97ms post 7.66ms diff 277µs align 268435456 pre 7.74ms on 7.95ms post 7.68ms diff 240µs align 134217728 pre 7.78ms on 7.99ms post 7.69ms diff 256µs align 67108864 pre 7.81ms on 7.99ms post 7.74ms diff 211µs align 33554432 pre 7.79ms on 7.99ms post 7.64ms diff 271µs align 16777216 pre 7.82ms on 7.98ms post 7.69ms diff 227µs align 8388608 pre 7.78ms on 7.99ms post 7.66ms diff 274µs align 4194304 pre 7.78ms on 7.75ms post 7.76ms diff -22205n align 2097152 pre 7.84ms on 7.84ms post 7.87ms diff -10279n align 1048576 pre 7.76ms on 7.76ms post 7.74ms diff 10.1µs align 524288 pre 7.75ms on 7.76ms post 7.76ms diff 3.1µs # ./flashbench -a /dev/sdd --blocksize=$[512 * 1024] align 4294967296 pre 14.7ms on 15ms post 14.7ms diff 268µs align 2147483648 pre 14.4ms on 14.8ms post 14.4ms diff 417µs align 1073741824 pre 14.5ms on 14.7ms post 14.4ms diff 235µs align 536870912 pre 14.4ms on 14.6ms post 14.4ms diff 229µs align 268435456 pre 14.5ms on 14.8ms post 14.4ms diff 371µs align 134217728 pre 14.5ms on 14.7ms post 14.5ms diff 186µs align 67108864 pre 14.5ms on 14.7ms post 14.5ms diff 247µs align 33554432 pre 14.5ms on 14.7ms post 14.5ms diff 199µs align 16777216 pre 14.5ms on 14.6ms post 14.4ms diff 140µs align 8388608 pre 14.5ms on 14.7ms post 14.5ms diff 221µs align 4194304 pre 14.5ms on 14.5ms post 14.5ms diff -25738n align 2097152 pre 14.6ms on 14.6ms post 14.5ms diff 12.9µs align 1048576 pre 14.6ms on 14.6ms post 14.5ms diff 30.9µs # ./flashbench -a /dev/sdd --blocksize=$[1024 * 1024] align 4294967296 pre 27.9ms on 28.5ms post 28.4ms diff 340µs align 2147483648 pre 28.1ms on 28.4ms post 28.1ms diff 295µs align 1073741824 pre 28ms on 28.3ms post 28ms diff 244µs align 536870912 pre 28.1ms on 28.3ms post 28.2ms diff 199µs align 268435456 pre 28.4ms on 28.5ms post 28.2ms diff 233µs align 134217728 pre 28.3ms on 28.3ms post 27.9ms diff 228µs align 67108864 pre 28.1ms on 28.4ms post 28.1ms diff 289µs align 33554432 pre 28.2ms on 28.4ms post 28ms diff 240µs align 16777216 pre 28.2ms on 28.4ms post 28.1ms diff 232µs align 8388608 pre 28.1ms on 28.3ms post 28.1ms diff 264µs align 4194304 pre 28ms on 28.2ms post 28.2ms diff 159µs align 2097152 pre 28ms on 28ms post 28.1ms diff -10985n # ./flashbench --open-au --open-au-nr=2 --erasesize=$[4 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 4MiB 22M/s 2MiB 5.91M/s 1MiB 21.5M/s 512KiB 5.88M/s 256KiB 20.9M/s # ./flashbench --open-au --open-au-nr=2 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 21.1M/s 2MiB 21M/s 1MiB 20.9M/s 512KiB 20.7M/s 256KiB 20.2M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 21.1M/s 2MiB 21.1M/s 1MiB 20.9M/s 512KiB 20.7M/s 256KiB 20.2M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.2M/s 4MiB 16.7M/s 2MiB 15.2M/s 1MiB 14.5M/s 512KiB 14.1M/s 256KiB 13.7M/s # ./flashbench --open-au --open-au-nr=6 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 14.8M/s 2MiB 12.8M/s 1MiB 12M/s 512KiB 11.6M/s 256KiB 11.2M/s # ./flashbench --open-au --open-au-nr=2 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.5M/s 8MiB 21.3M/s 4MiB 21.3M/s 2MiB 21.2M/s 1MiB 21.1M/s 512KiB 20.8M/s 256KiB 20.3M/s # ./flashbench --open-au --open-au-nr=3 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.5M/s 8MiB 21.3M/s 4MiB 21.2M/s 2MiB 21.1M/s 1MiB 21.2M/s 512KiB 21.2M/s 256KiB 20.6M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.7M/s 8MiB 21.5M/s 4MiB 21.5M/s 2MiB 21.3M/s 1MiB 21.2M/s 512KiB 21M/s 256KiB 20.4M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.4M/s 8MiB 21.3M/s 4MiB 16.9M/s 2MiB 15.3M/s 1MiB 14.6M/s 512KiB 14.1M/s 256KiB 13.7M/s # ./flashbench --open-au --open-au-nr=6 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.3M/s 8MiB 21.2M/s 4MiB 14.8M/s 2MiB 12.8M/s 1MiB 12M/s 512KiB 9.32M/s 256KiB 11.2M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] /dev/sdd --random 8MiB 21.2M/s 4MiB 21.4M/s 2MiB 12.8M/s 1MiB 8.06M/s 512KiB 6.77M/s 256KiB 6.01M/s 128KiB 5.92M/s 64KiB 5.58M/s 32KiB 3.15M/s 16KiB 2.64M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[8 * 1024 * 1024] /dev/sdd --random 8MiB 21.3M/s 4MiB 17M/s 2MiB 11.1M/s 1MiB 7.7M/s 512KiB 5.67M/s 256KiB 6.19M/s 128KiB 5.13M/s 64KiB 5.69M/s 32KiB 3.19M/s 16KiB 2.2M/s Can you guide me with what I should test next? -- mit freundlichen Grüssen, Michael Monnerie, Ing. BSc it-management Internet Services: Protéger http://proteger.at [gesprochen: Prot-e-schee] Tel: +43 660 / 415 6531 // ****** Radiointerview zum Thema Spam ****** // http://www.it-podcast.at/archiv.html#podcast-100716 // // Haus zu verkaufen: http://zmi.at/langegg/

14 years, 1 month

2
5
0 0

Swissbit SFCF8192H3BK4SA

by Arnd Bergmann

Disk /dev/sdc: 8 GB, 8195604480 bytes 16 heads, 63 sectors/track, 15880 cylinders, total 16007040 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 256 19839 10048 83 Linux Warning: Partition 1 does not end on cylinder boundary. /dev/sdc2 19840 996479 488376 83 Linux Warning: Partition 2 does not end on cylinder boundary. /dev/sdc3 996480 1973119 488376 83 Linux Warning: Partition 3 does not end on cylinder boundary. /dev/sdc4 1973120 16007039 7016688 5 Extended /dev/sdc5 1974672 15697583 6860952 83 Linux Warning: Partition 5 does not end on cylinder boundary. /dev/sdc6 15697647 16007039 154224 83 Linux Warning: Partition 6 does not end on cylinder boundary. align 536870912 pre 481µs on 481µs post 484µs diff -1367ns align 268435456 pre 479µs on 480µs post 480µs diff 244ns align 134217728 pre 483µs on 483µs post 484µs diff -375ns align 67108864 pre 478µs on 481µs post 479µs diff 2.88µs align 33554432 pre 481µs on 483µs post 482µs diff 1.18µs align 16777216 pre 480µs on 484µs post 480µs diff 3.4µs align 8388608 pre 479µs on 478µs post 477µs diff -144ns align 4194304 pre 482µs on 482µs post 478µs diff 1.98µs align 2097152 pre 484µs on 486µs post 486µs diff 674ns align 1048576 pre 489µs on 489µs post 490µs diff -893ns align 524288 pre 487µs on 491µs post 490µs diff 2.52µs align 262144 pre 484µs on 486µs post 486µs diff 878ns align 131072 pre 477µs on 477µs post 479µs diff -489ns align 65536 pre 485µs on 490µs post 489µs diff 3.58µs align 32768 pre 487µs on 489µs post 490µs diff 544ns align 16384 pre 479µs on 486µs post 487µs diff 2.38µs align 8192 pre 477µs on 478µs post 479µs diff 75ns align 4096 pre 484µs on 484µs post 486µs diff -912ns align 2048 pre 477µs on 479µs post 479µs diff 844ns arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=4 --random --blocksize=512 512KiB 15.6M/s 256KiB 15.6M/s 128KiB 15.4M/s 64KiB 15.3M/s 32KiB 14.8M/s 16KiB 14M/s 8KiB 12.7M/s 4KiB 8.04M/s 2KiB 4.23M/s 1KiB 2.7M/s 512B 1.33M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=5 --random --blocksize=512 512KiB 15.5M/s 256KiB 8.61M/s 128KiB 5.96M/s 64KiB 2.74M/s 32KiB 1.34M/s 16KiB 669K/s 8KiB 339K/s 4KiB 169K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=4 --blocksize=512 512KiB 15.7M/s 256KiB 15.8M/s 128KiB 15.6M/s 64KiB 15.5M/s 32KiB 14.8M/s 16KiB 14M/s 8KiB 12.6M/s 4KiB 8.03M/s 2KiB 4.22M/s 1KiB 2.71M/s 512B 1.36M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=5 --blocksize=512 512KiB 14.5M/s 256KiB 9.09M/s 128KiB 5.04M/s 64KiB 3.03M/s 32KiB 1.38M/s 16KiB 689K/s 8KiB 350K/s 4KiB 174K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[512*1024] --findfat --fat-nr=6 512KiB 16.2M/s 15.8M/s 15.5M/s 15.8M/s 16.4M/s 15.8M/s 256KiB 15.6M/s 15.5M/s 15.5M/s 16.1M/s 16.1M/s 15.8M/s 128KiB 15.6M/s 15.5M/s 15.5M/s 15.3M/s 15.4M/s 15.4M/s 64KiB 16M/s 15.3M/s 15.1M/s 15.9M/s 15.3M/s 15.2M/s 32KiB 15.1M/s 14.9M/s 14.8M/s 14.9M/s 15.3M/s 14.9M/s 16KiB 14M/s 14M/s 14M/s 14M/s 14M/s 14M/s 8KiB 12.5M/s 12.7M/s 12.7M/s 12.6M/s 12.7M/s 12.7M/s 4KiB 7.93M/s 8.02M/s 8.03M/s 8.02M/s 8.02M/s 8.03M/s 2KiB 4.07M/s 4.16M/s 4.17M/s 4.11M/s 4.16M/s 4.13M/s 1KiB 2.68M/s 2.71M/s 2.71M/s 2.71M/s 2.71M/s 2.71M/s 512B 1.35M/s 1.36M/s 1.36M/s 1.36M/s 1.33M/s 1.34M/s

14 years, 1 month

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GPS + WIFI Phone

by Picasa Web Albums

Dear friend, Good day! Our company is mainly in the OEM and ODM business with all kinds of mobile phone. The hotsales item A3Q: 2 Cards / 3.5 inch screen / Android 2.2 System If you need the detail requirement, please kindly contact us. Best wishes Juce Mobile:0086-13424432252 Tel: 0086-0755-85282599 Fax: 0086-0755-81752355 E-mail: elink(a)vip.188.com Websize: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 1 month

1
0
0 0

Don't wast you time on B2B, this is the best supplier for mobile phone

by Picasa Web Albums

Dear friend, Good day! Our company is mainly in the OEM and ODM business with all kinds of mobile phone. The hotsales item A3Q: 2 Cards / 3.5 inch screen / Android 2.2 System If you need the detail requirement, please kindly contact us. Best wishes Juce Mobile:0086-13424432252 Tel: 0086-0755-85282599 Fax: 0086-0755-81752355 E-mail: elink(a)vip.188.com Websize: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 1 month

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Sandisk Cruzer Blade 8GB USB

by Arnd Bergmann

Bus 002 Device 002: ID 0781:5567 SanDisk Corp. Cruszer Blade Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0781 SanDisk Corp. idProduct 0x5567 Cruszer Blade bcdDevice 1.00 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 0 arnd@klappe2:~$ sudo sdparm -v /dev/sdc /dev/sdc: SanDisk Cruzer Blade 1.00 >> Read write error recovery mode page [0x1] not found >> Caching (SBC) mode page [0x8] not found >> Control mode page [0xa] not found >> Informational exceptions control mode page [0x1c] failed Disk /dev/sdc: 8000 MB, 8000110592 bytes 160 heads, 19 sectors/track, 5139 cylinders, total 15625216 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 32 15625215 7812592 b W95 FAT32 sudo ./flashbench -a /dev/sdc --blocksize=1024 align 25165824 pre 685µs on 1.05ms post 682µs diff 363µs align 16777216 pre 735µs on 892µs post 746µs diff 151µs align 12582912 pre 696µs on 1.06ms post 697µs diff 360µs align 8388608 pre 694µs on 809µs post 696µs diff 113µs align 6291456 pre 717µs on 1.08ms post 697µs diff 376µs align 4194304 pre 710µs on 858µs post 714µs diff 146µs align 3145728 pre 721µs on 848µs post 705µs diff 136µs align 2097152 pre 720µs on 858µs post 717µs diff 139µs align 1572864 pre 720µs on 733µs post 710µs diff 18.1µs align 1048576 pre 707µs on 846µs post 710µs diff 137µs align 786432 pre 719µs on 732µs post 710µs diff 17.1µs align 524288 pre 708µs on 722µs post 722µs diff 7µs align 393216 pre 720µs on 735µs post 710µs diff 20.3µs align 262144 pre 708µs on 722µs post 710µs diff 12.7µs align 196608 pre 710µs on 735µs post 710µs diff 25.1µs align 131072 pre 710µs on 722µs post 722µs diff 5.96µs align 98304 pre 710µs on 735µs post 709µs diff 25.6µs align 65536 pre 707µs on 722µs post 722µs diff 7.49µs # Trying 4 MB erase blocks -> 2 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=1 4MiB 17.6M/s 2MiB 18M/s 1MiB 18M/s 512KiB 18.1M/s 256KiB 17.8M/s 128KiB 17.7M/s 64KiB 16M/s 32KiB 15.5M/s 16KiB 13.4M/s 8KiB 8.82M/s 4KiB 3.14M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=2 4MiB 7.39M/s 2MiB 18M/s 1MiB 18M/s 512KiB 18M/s 256KiB 17.8M/s 128KiB 17.8M/s 64KiB 16M/s 32KiB 16.5M/s 16KiB 13.6M/s 8KiB 8.73M/s 4KiB 3.15M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=3 4MiB 3.55M/s 2MiB 4.13M/s 1MiB 3.93M/s 512KiB 4.23M/s 256KiB 3.9M/s 128KiB 3.48M/s 64KiB 4.79M/s 32KiB 3.98M/s 16KiB 3.18M/s 8KiB 3.87M/s 4KiB 2.12M/s # trying 2 MB erase blocks -> 5 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=5 2MiB 8.89M/s 1MiB 18.1M/s 512KiB 18.2M/s 256KiB 17.9M/s 128KiB 18M/s 64KiB 16.3M/s 32KiB 16.8M/s 16KiB 13.7M/s 8KiB 8.8M/s 4KiB 3.07M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=6 2MiB 3.21M/s 1MiB 4.81M/s 512KiB 4.03M/s 256KiB 4.18M/s 128KiB 3.85M/s 64KiB 3.84M/s 32KiB 4.15M/s 16KiB 3.78M/s 8KiB 3.08M/s 4KiB 1.84M/s # trying 1 MB erase blocks -> 10 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=10 1MiB 4.28M/s 512KiB 9.07M/s 256KiB 17.9M/s 128KiB 17.8M/s 64KiB 16.2M/s 32KiB 16.8M/s 16KiB 13.7M/s 8KiB 8.75M/s 4KiB 2.88M/s 2KiB 1.36M/s 1KiB 656K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=11 1MiB 1.93M/s 512KiB 718K/s 256KiB 346K/s # trying 512 KB erase blocks -> 10 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[512*1024] /dev/sdc --blocksize=4096 --open-au-nr=10 512KiB 17.6M/s 256KiB 17.6M/s 128KiB 17.7M/s 64KiB 15.9M/s 32KiB 16.6M/s 16KiB 13.4M/s 8KiB 8.59M/s 4KiB 3.01M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[512*1024] /dev/sdc --blocksize=4096 --open-au-nr=11 512KiB 979K/s 256KiB 349K/s ^C # Trying random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=1 --random 1MiB 14.2M/s 512KiB 17.9M/s 256KiB 17.5M/s 128KiB 4.9M/s 64KiB 1.62M/s 32KiB 888K/s 16KiB 514K/s 8KiB 1.55M/s 4KiB 1.66M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=10 --random 1MiB 17.9M/s 512KiB 18.1M/s 256KiB 17.4M/s 128KiB 4.94M/s 64KiB 1.61M/s 32KiB 894K/s 16KiB 515K/s 8KiB 1.5M/s 4KiB 1.57M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=11 --random 1MiB 1.61M/s 512KiB 714K/s 256KiB 343K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[3*1024*1024] /dev/sdc --blocksize=$[3*1024*1024] --open-au-nr=20 --offset=$[21 * 1024*1024] 3MiB 4.87M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=$[2*1024*1024] --open-au-nr=20 --offset=$[24 * 1024*1024] 2MiB 2.96M/s

14 years, 1 month

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STEC M2+ CF 9.0.2 SLCF16M2PU

by Arnd Bergmann

arnd@klappe2:~/git/flashbench$ sudo hdparm -I /dev/sdc /dev/sdc: HDIO_DRIVE_CMD(identify) failed: Invalid exchange arnd@klappe2:~/git/flashbench$ sudo hdparm -I /dev/sdg /dev/sdg: CompactFlash ATA device Model Number: STEC M2+ CF 9.0.2 Serial Number: STIM2MT410135051121 Firmware Revision: K1169-2 Standards: Supported: 6 5 4 Likely used: 6 Configuration: Logical max current cylinders 16383 30681 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 30926448 LBA user addressable sectors: 30926448 Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 15100 MBytes device size with M = 1000*1000: 15834 MBytes (15 GB) cache/buffer size = unknown Capabilities: LBA, IORDY(cannot be disabled) Standby timer values: spec'd by Standard R/W multiple sector transfer: Max = 1 Current = 1 DMA: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: Security Mode feature set * Power Management feature set * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * NOP cmd * CFA feature set CFA max advanced io_udma cycle time: 80ns CFA max advanced mem_udma cycle time: 80ns * CFA advanced modes: pio5 *pio6 mdma3 *mdma4 io_udma4 io_udma5 *io_udma6 io_udma7 io_udma8 mem_udma4 mem_udma5 *mem_udma6 mem_udma7 mem_udma8 Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count not supported: enhanced erase Integrity word not set (found 0x0000, expected 0x80a5) Disk /dev/sdg: 15.8 GB, 15834341376 bytes 255 heads, 63 sectors/track, 1925 cylinders, total 30926448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000bd02f Device Boot Start End Blocks Id System /dev/sdg1 2048 30924799 15461376 83 Linux ==> card_id <== 0x0000 ==> func_id <== 0x04 ==> function <== 0x00 ==> manf_id <== 0x0000 ==> modalias <== pcmcia:m0000c0000f04fn00pfn00paC709C891pbFE591B16pc00000000pd00000000 ==> prod_id1 <== STEC M2+ CF 9.0.2 ==> prod_id2 <== M2P # Cannot tell erase block size: align 805306368 pre 737µs on 781µs post 737µs diff 43.4µs align 536870912 pre 725µs on 729µs post 725µs diff 3.52µs align 402653184 pre 738µs on 752µs post 725µs diff 20.7µs align 268435456 pre 738µs on 808µs post 753µs diff 62.4µs align 201326592 pre 737µs on 813µs post 754µs diff 67.6µs align 134217728 pre 726µs on 765µs post 739µs diff 32.9µs align 100663296 pre 724µs on 761µs post 739µs diff 29.9µs align 67108864 pre 722µs on 775µs post 736µs diff 45.2µs align 50331648 pre 721µs on 764µs post 752µs diff 27.1µs align 33554432 pre 734µs on 790µs post 750µs diff 47.5µs align 25165824 pre 740µs on 790µs post 748µs diff 46.3µs align 16777216 pre 722µs on 765µs post 744µs diff 31.8µs align 12582912 pre 728µs on 767µs post 736µs diff 35.4µs align 8388608 pre 731µs on 779µs post 737µs diff 44.7µs align 6291456 pre 760µs on 805µs post 761µs diff 43.7µs align 4194304 pre 752µs on 816µs post 753µs diff 63.8µs align 3145728 pre 730µs on 789µs post 750µs diff 49.1µs align 2097152 pre 715µs on 754µs post 737µs diff 28µs align 1572864 pre 729µs on 849µs post 805µs diff 82.9µs align 1048576 pre 732µs on 941µs post 894µs diff 128µs align 786432 pre 736µs on 912µs post 830µs diff 129µs align 524288 pre 724µs on 890µs post 818µs diff 119µs align 393216 pre 722µs on 867µs post 806µs diff 103µs align 262144 pre 723µs on 847µs post 792µs diff 89.3µs align 196608 pre 726µs on 827µs post 767µs diff 80.6µs align 131072 pre 724µs on 803µs post 759µs diff 62µs align 98304 pre 723µs on 802µs post 763µs diff 58.4µs align 65536 pre 724µs on 814µs post 764µs diff 70.6µs align 49152 pre 728µs on 802µs post 765µs diff 56µs align 32768 pre 724µs on 802µs post 764µs diff 58µs align 24576 pre 726µs on 803µs post 766µs diff 57.2µs align 16384 pre 726µs on 805µs post 761µs diff 61.5µs align 12288 pre 765µs on 801µs post 726µs diff 55.4µs align 8192 pre 725µs on 805µs post 765µs diff 60.4µs # no random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --random --open-au-nr=1 1MiB 10.4M/s 512KiB 1.36M/s 256KiB 1.66M/s 128KiB 1.36M/s 64KiB 813K/s 32KiB 448K/s 16KiB 305K/s 8KiB 298K/s 4KiB 177K/s # erase blocks don't really match arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --open-au-nr=1 1MiB 7.51M/s 512KiB 2.13M/s 256KiB 4.12M/s 128KiB 6.73M/s 64KiB 7.38M/s 32KiB 7.17M/s 16KiB 5.9M/s 8KiB 4.82M/s 4KiB 3.25M/s 2KiB 2.37M/s 1KiB 1.66M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=1 2MiB 10.9M/s 1MiB 4.56M/s 512KiB 3.82M/s 256KiB 6.8M/s 128KiB 10M/s 64KiB 10.7M/s 32KiB 10.1M/s 16KiB 8.33M/s 8KiB 6.61M/s 4KiB 4.21M/s 2KiB 3M/s 1KiB 1.9M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 --open-au-nr=1 4MiB 13.7M/s 2MiB 7.41M/s 1MiB 7.5M/s 512KiB 6.54M/s 256KiB 10M/s 128KiB 12.9M/s 64KiB 14M/s 32KiB 12.9M/s 16KiB 10.5M/s 8KiB 7.77M/s 4KiB 5.12M/s 2KiB 3.32M/s 1KiB 2.02M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=2 2MiB 11.3M/s 1MiB 7.37M/s 512KiB 4.53M/s 256KiB 2.56M/s 128KiB 1.37M/s 64KiB 737K/s 32KiB 377K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=4 2MiB 10.9M/s 1MiB 7.39M/s 512KiB 4.54M/s 256KiB 2.55M/s 128KiB 1.4M/s 64KiB 735K/s 32KiB 376K/s # Linear writing is ok arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=2097152 --findfat --fat-nr=6 2MiB 14.2M/s 19M/s 18.8M/s 19M/s 18.8M/s 18.9M/s 1MiB 6.04M/s 19M/s 18.9M/s 18.7M/s 18.9M/s 19.5M/s 512KiB 4.8M/s 18.7M/s 18.9M/s 18.8M/s 18.5M/s 18.7M/s 256KiB 7.52M/s 19.1M/s 19.2M/s 18.5M/s 18.4M/s 18.4M/s 128KiB 12.2M/s 18M/s 17.8M/s 17.4M/s 18M/s 18.1M/s 64KiB 12.5M/s 18.6M/s 18.3M/s 18.4M/s 18.3M/s 18.3M/s 32KiB 11.8M/s 16.7M/s 16.8M/s 16.8M/s 16.9M/s 16.7M/s 16KiB 9.86M/s 13.5M/s 13.6M/s 13.5M/s 13.5M/s 13.3M/s 8KiB 7.61M/s 9.4M/s 9.4M/s 9.42M/s 9.39M/s 9.22M/s 4KiB 5.47M/s 6.24M/s 6.05M/s 6.32M/s 6.17M/s 6.27M/s 2KiB 3.56M/s 3.78M/s 3.74M/s 3.72M/s 3.63M/s 3.67M/s 1KiB 1.9M/s 2.21M/s 2.23M/s 2.23M/s 2.22M/s 2.21M/s ################## # Further low-level testing revealed 992 KiB erase blocks, which gives us good performance: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[512 * 1024] --blocksize=512 --open-au --open-au-nr=1 512KiB 20.2M/s 256KiB 3.77M/s 128KiB 16.8M/s 64KiB 18.5M/s 32KiB 16.5M/s 16KiB 12.9M/s 8KiB 9.23M/s 4KiB 6.39M/s 2KiB 3.23M/s 1KiB 1.6M/s 512B 812K/s # The same with 2 open erase blocks does not work at all: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[512 * 1024] --blocksize=512 --open-au --open-au-nr=2 512KiB 2.83M/s 256KiB 1.99M/s 128KiB 1.43M/s 64KiB 763K/s 32KiB 376K/s 16KiB 293K/s 8KiB 282K/s 4KiB 184K/s 2KiB 102K/s 1KiB 85.9K/s 512B 75K/s # nor does random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[512 * 1024] --blocksize=512 --open-au --open-au-nr=1 --random 512KiB 19.4M/s 256KiB 1.73M/s 128KiB 2.49M/s 64KiB 1.22M/s 32KiB 670K/s 16KiB 390K/s 8KiB 318K/s 4KiB 194K/s 2KiB 119K/s 1KiB 95K/s 512B 78.6K/s

14 years, 1 month

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Better Air Price to Brazil BSI SAM EIGHT

by Sam Peng / BSI-SZX

Dear Sir & Madam, Have a nice day ! This is Sam Peng from BSI (BEST SERVICES INT'L FREIGHT LTD) in China.we are as agent of Lufthansa Cargo / LH ; Lan Chile / LAN ; Bringer Air Cargo / E6 in China. We specialize in Air freight / Sea shipping to Brazil in China. It's my pleasure to send the the below air price for your reference. Shenzhen / Guangzhou / Dongguan ; China to San Paulo ; Brazil : ***we can help you to pick up the goods from any city in China to Brazil*** Our Promise: -- Closely keep in touch with you & Supplier. -- Keep working with you in the same time as you to know all update information for your order in time. -- Combine the shipment from different supplier and make the combine packing list & commercial invoice to one set original document -- Assist you to check new supplier's company credit. -- Ensure Cargo to be loaded at the soonest. -- Ensure to provide best logsitics project to save your purchase cost. -- Keep update the cargo tracking information for you. Our Certifications: -- IATA: International Air Transport Association. -- NVOCC: Non Vessel Operating Common Carrier. -- WCA: Member of World Cargo Alliance. -- CATA: China Civil Air Transport Sales (Class A) Agency Services. I expect you to try our services for your air cargo to Brazil. I'm sure that our sincerely services can make you feel satisfied.Please don't hesitate to contact with me in any time. B. regards! Sam Peng Sales Dept BEST SERVICES INTERNATIONAL FREIGHT LTD Rm.B13-19, 10/F, Regalia Place, Jiabin Rd, Shenzhen, China. Tel : 86-755-25904212 Fax : 86-755-25901937 / 25901911 Cell Phone : +86-13760303532 E-mail : sales4.szx(a)bsigroup.cc MSN : sampeng8210(a)hotmail.com Skype : sampeng821007 Website: http://www.bestservices.com.cn IATA: 08-3 1624 CATA: ZN30165 FMC: 022856 NVOCC: MOC-NV03395 BSI Own Offices: Shenzhen, Hong Kong, Guangzhou, Zhongshan, Jiangmen, Dongguan, Xiamen, Ningbo, Shanghai, Beijing, Tianjin, Qingdao, Zhengzhou. BSI representative offices: Zhuhai, Shantou, Foshan, Changsha, Nanchang, Fuzhou, Hangzhou, Nanjing, Wuhan, Dalian, Yantai, Lianyungang, Kunming, Chongqing, Chendu and others. All transactions are subject to the Company's Standard Trading Conditions ( copy is available upon request ), which in certain circumstances limit or exempt the Company's liability.

14 years, 1 month

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XCeedCF "SMART CF" (20080820), SMI233

by Arnd Bergmann

arnd@klappe2:~/linux-2.6$ sudo fdisk -lu /dev/sdg Disk /dev/sdg: 16.0 GB, 16039018496 bytes 255 heads, 63 sectors/track, 1949 cylinders, total 31326208 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdg1 * 63 31326207 15663072+ c W95 FAT32 (LBA) arnd@klappe2:~/linux-2.6$ sudo hdparm -I /dev/sdg /dev/sdg: CompactFlash ATA device Model Number: SMART CF Serial Number: 2010052503008EDA8EDA Firmware Revision: 20080820 Standards: Supported: 4 Likely used: 6 Configuration: Logical max current cylinders 16383 16383 heads 15 15 sectors/track 63 63 -- CHS current addressable sectors: 15481935 LBA user addressable sectors: 31326208 Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 15296 MBytes device size with M = 1000*1000: 16039 MBytes (16 GB) cache/buffer size = 1 KBytes (type=DualPort) Capabilities: LBA, IORDY(may be)(cannot be disabled) Standby timer values: spec'd by Vendor R/W multiple sector transfer: Max = 1 Current = 0 Advanced power management level: disabled DMA: not supported PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: SMART feature set Security Mode feature set Power Management feature set WRITE_BUFFER command READ_BUFFER command NOP cmd CFA feature set Advanced Power Management feature set SMART error logging * SMART self-test CFA max advanced io_udma cycle time: 80ns CFA max advanced mem_udma cycle time: 80ns * CFA advanced modes: pio5 *pio6 mdma3 mdma4 *io_udma4 io_udma5 io_udma6 io_udma7 io_udma8 io_udma9 *mem_udma4 mem_udma5 mem_udma6 mem_udma7 mem_udma8 mem_udma9 * CFA Power Level 1 (max 500mA) Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count not supported: enhanced erase 2min for SECURITY ERASE UNIT. HW reset results: CBLID- above Vih Device num = 1 Integrity word not set (found 0x0000, expected 0x1da5) arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 1MiB 10.8M/s 512KiB 9.21M/s 256KiB 11.2M/s 128KiB 11.1M/s 64KiB 10.9M/s 32KiB 9.63M/s 16KiB 6.66M/s 8KiB 4.63M/s 4KiB 2.04M/s 2KiB 1.82M/s 1KiB 970K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 2MiB 12.7M/s 1MiB 15.5M/s 512KiB 15M/s 256KiB 17.1M/s 128KiB 15.9M/s 64KiB 16.7M/s 32KiB 15.1M/s 16KiB 11.7M/s 8KiB 6.72M/s 4KiB 3.82M/s 2KiB 2.03M/s 1KiB 1.03M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 4MiB 17.2M/s 2MiB 17.3M/s 1MiB 17.4M/s 512KiB 17.4M/s 256KiB 16.8M/s 128KiB 16M/s 64KiB 17.1M/s 32KiB 14.8M/s 16KiB 11.8M/s 8KiB 6.96M/s 4KiB 3.77M/s 2KiB 2.02M/s 1KiB 1.03M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 --random 4MiB 17.4M/s 2MiB 17.2M/s 1MiB 15.5M/s 512KiB 12.8M/s 256KiB 10.5M/s 128KiB 11.9M/s 64KiB 7.63M/s 32KiB 7.96M/s 16KiB 7.55M/s 8KiB 3.36M/s 4KiB 1.83M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 --random --open-au-nr=3 4MiB 14.9M/s 2MiB 14.8M/s 1MiB 11.3M/s 512KiB 11.8M/s 256KiB 8.63M/s 128KiB 5.46M/s 64KiB 3.78M/s 32KiB 2.2M/s 16KiB 1.15M/s ^C # Assuming 2 MB erase blocks, the card can open 4 of them: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --random --open-au-nr=3 2MiB 14.6M/s 1MiB 13.2M/s 512KiB 11.2M/s 256KiB 8.48M/s 128KiB 10.3M/s 64KiB 10.8M/s 32KiB 7.65M/s 16KiB 6.68M/s 8KiB 2.99M/s 4KiB 1.78M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --random --open-au-nr=4 2MiB 13.5M/s 1MiB 13.5M/s 512KiB 13.7M/s 256KiB 9.41M/s 128KiB 11.5M/s 64KiB 10.2M/s 32KiB 7.41M/s 16KiB 6.49M/s 8KiB 3.22M/s 4KiB 1.71M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --random --open-au-nr=5 2MiB 13.1M/s 1MiB 14M/s 512KiB 11.8M/s 256KiB 8.4M/s 128KiB 6.77M/s 64KiB 4.66M/s 32KiB 2.81M/s 16KiB 1.46M/s # Not 1 MB erase blocks: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --random --open-au-nr=4 1MiB 13M/s 512KiB 10.4M/s 256KiB 11.7M/s 128KiB 11.2M/s 64KiB 8.9M/s 32KiB 8.34M/s 16KiB 6.22M/s 8KiB 3.23M/s 4KiB 1.76M/s 2KiB 884K/s 1KiB 452K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --random --open-au-nr=5 1MiB 12.5M/s 512KiB 10.4M/s 256KiB 10.7M/s 128KiB 6.76M/s 64KiB 5M/s 32KiB 2.77M/s 16KiB 1.48M/s 8KiB 751K/s 4KiB 381K/s 2KiB 189K/s 1KiB 85.4K/s # Something terribly wrong here: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=4 2MiB 9.72M/s 1MiB 11.1M/s 512KiB 11M/s 256KiB 13.8M/s 128KiB 14.1M/s 64KiB 14.1M/s 32KiB 5.14M/s 16KiB 318K/s 8KiB 158K/s 4KiB 78.9K/s # Repeat: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=4 2MiB 17.7M/s 1MiB 14.2M/s 512KiB 8.32M/s 256KiB 4.42M/s 128KiB 2.37M/s 64KiB 1.25M/s 32KiB 634K/s # But works with up to three erase blocks: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=2 2MiB 17.6M/s 1MiB 17.4M/s 512KiB 17.3M/s 256KiB 16.9M/s 128KiB 15.6M/s 64KiB 17.1M/s 32KiB 15.1M/s 16KiB 11.9M/s 8KiB 7.08M/s 4KiB 3.76M/s 2KiB 2.05M/s 1KiB 1.04M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=3 2MiB 17.4M/s 1MiB 15.9M/s 512KiB 17.3M/s 256KiB 17M/s 128KiB 16.2M/s 64KiB 17.1M/s 32KiB 15M/s 16KiB 9.25M/s 8KiB 6.95M/s 4KiB 3.86M/s 2KiB 2.03M/s 1KiB 1.04M/s # offset does not hurt for random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=2 --random --offset=$[16*1024*1024 + 512] 2MiB 11.4M/s 1MiB 11.4M/s 512KiB 8.72M/s 256KiB 9.65M/s 128KiB 9.03M/s 64KiB 8.07M/s 32KiB 6.73M/s 16KiB 3.64M/s 8KiB 2.32M/s 4KiB 1.36M/s 2KiB 648K/s 1KiB 341K/s # No special FAT area: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=2097152 --findfat --fat-nr=6 --random 2MiB 9.26M/s 17.6M/s 17.5M/s 17.2M/s 17.3M/s 17.4M/s 1MiB 11.8M/s 10.6M/s 8.42M/s 8.54M/s 8.29M/s 5.93M/s 512KiB 7.5M/s 9.64M/s 9.58M/s 9.65M/s 9.68M/s 9.59M/s 256KiB 7.3M/s 6.46M/s 6.4M/s 6.42M/s 6.42M/s 6.43M/s 128KiB 7.09M/s 7.04M/s 7.09M/s 7.1M/s 7.11M/s 7.12M/s 64KiB 7.4M/s 7.28M/s 7.46M/s 7.41M/s 7.35M/s 7.41M/s 32KiB 5.83M/s 5.83M/s 5.76M/s 5.82M/s 5.84M/s 5.52M/s 16KiB 4.47M/s 4.43M/s 4.26M/s 4.47M/s 4.47M/s 4.43M/s 8KiB 2.8M/s 2.8M/s 2.78M/s 2.79M/s 2.8M/s 2.78M/s 4KiB 1.4M/s 1.41M/s 1.36M/s 1.4M/s 1.4M/s 1.41M/s 2KiB 698K/s 704K/s 701K/s 703K/s 697K/s 703K/s

14 years, 1 month

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Silicon Systems CF Card 2 GB

by Arnd Bergmann

# sudo fdisk /dev/sdc -lu Disk /dev/sdc: 2 GB, 2097446400 bytes 255 heads, 63 sectors/track, 255 cylinders, total 4096575 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 63 144584 72261 e FAT16 LBA /dev/sdc2 144585 4096574 1967962 83 Linux $ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 268435456 pre 611µs on 687µs post 608µs diff 77.3µs align 134217728 pre 598µs on 695µs post 597µs diff 97.8µs align 67108864 pre 601µs on 605µs post 601µs diff 4.26µs align 33554432 pre 598µs on 607µs post 602µs diff 7.52µs align 16777216 pre 600µs on 604µs post 603µs diff 3.1µs align 8388608 pre 603µs on 609µs post 606µs diff 4.29µs align 4194304 pre 589µs on 593µs post 591µs diff 3.13µs align 2097152 pre 593µs on 596µs post 591µs diff 3.28µs align 1048576 pre 606µs on 602µs post 592µs diff 3.37µs align 524288 pre 604µs on 610µs post 610µs diff 3.38µs align 262144 pre 588µs on 591µs post 591µs diff 1.42µs align 131072 pre 585µs on 606µs post 584µs diff 20.7µs align 65536 pre 592µs on 590µs post 590µs diff -344ns align 32768 pre 591µs on 587µs post 588µs diff -2848ns align 16384 pre 588µs on 588µs post 585µs diff 1.95µs align 8192 pre 591µs on 586µs post 590µs diff -4470ns align 4096 pre 586µs on 589µs post 584µs diff 3.41µs align 2048 pre 594µs on 593µs post 590µs diff 1.21µs $ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 8192] 8MiB 5.21M/s 4MiB 5.23M/s 2MiB 5.24M/s 1MiB 5.24M/s 512KiB 5.31M/s 256KiB 5.28M/s 128KiB 5.27M/s 64KiB 5.24M/s 32KiB 5.21M/s 16KiB 5.09M/s 8KiB 4.85M/s 4KiB 4.43M/s 2KiB 3.9M/s 1KiB 2.64M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 8192] --random 8MiB 5.25M/s 4MiB 5.24M/s 2MiB 5.23M/s 1MiB 5.24M/s 512KiB 5.26M/s 256KiB 5.34M/s 128KiB 5.26M/s 64KiB 3.2M/s 32KiB 1.8M/s 16KiB 970K/s 8KiB 509K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=2 128KiB 3.1M/s 64KiB 3.68M/s 32KiB 2.01M/s 16KiB 1.08M/s 8KiB 632K/s 4KiB 4.43M/s 2KiB 3.91M/s 1KiB 2.65M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=4 512KiB 5.28M/s 256KiB 5.13M/s 128KiB 5.4M/s 64KiB 4.01M/s 32KiB 3.36M/s 16KiB 4.92M/s 8KiB 5.02M/s 4KiB 4.32M/s 2KiB 3.98M/s 1KiB 2.68M/s 512B 1.36M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=5 512KiB 4.95M/s 256KiB 5.47M/s 128KiB 5.19M/s 64KiB 3.8M/s 32KiB 2.27M/s 16KiB 1.35M/s 8KiB 762K/s 4KiB 465K/s 2KiB 293K/s 1KiB 180K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=6 512KiB 5.2M/s 256KiB 5.44M/s 128KiB 5.23M/s 64KiB 3.67M/s 32KiB 2.14M/s 16KiB 1.22M/s 8KiB 676K/s 4KiB 377K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 1024] --open-au-nr=4 1MiB 5.02M/s 512KiB 5.4M/s 256KiB 5.28M/s 128KiB 5.24M/s 64KiB 5.26M/s 32KiB 5.19M/s 16KiB 5.25M/s 8KiB 4.85M/s 4KiB 4.53M/s 2KiB 3.89M/s 1KiB 2.66M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=4 --random 128KiB 4.62M/s 64KiB 4.05M/s 32KiB 3.63M/s 16KiB 2.2M/s 8KiB 1.44M/s 4KiB 1.02M/s 2KiB 3.24M/s 1KiB 2.6M/s 512B 1.34M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=4 --random 128KiB 5.29M/s 64KiB 5.28M/s 32KiB 5.24M/s 16KiB 5.12M/s 8KiB 4.79M/s 4KiB 4.44M/s 2KiB 3.91M/s 1KiB 2.64M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=5 --random 128KiB 5.3M/s 64KiB 4.18M/s 32KiB 4.66M/s 16KiB 2.67M/s 8KiB 1.48M/s 4KiB 793K/s 2KiB 406K/s 1KiB 197K/s

14 years, 1 month

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PQI 512MB compactflash

by Arnd Bergmann

Disk /dev/sdc: 515 MB, 515579904 bytes 16 heads, 63 sectors/track, 999 cylinders, total 1006992 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 63 1005983 502960 6 FAT16 arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 67108864 pre 827µs on 990µs post 786µs diff 184µs align 33554432 pre 811µs on 992µs post 812µs diff 181µs align 16777216 pre 798µs on 992µs post 814µs diff 186µs align 8388608 pre 809µs on 994µs post 805µs diff 187µs align 4194304 pre 812µs on 995µs post 827µs diff 175µs align 2097152 pre 803µs on 986µs post 813µs diff 178µs align 1048576 pre 805µs on 849µs post 798µs diff 47.2µs align 524288 pre 809µs on 857µs post 811µs diff 47.5µs align 262144 pre 808µs on 861µs post 814µs diff 50.2µs align 131072 pre 804µs on 852µs post 812µs diff 44.1µs align 65536 pre 805µs on 854µs post 814µs diff 45µs align 32768 pre 829µs on 825µs post 808µs diff 5.79µs align 16384 pre 802µs on 810µs post 818µs diff 45ns align 8192 pre 814µs on 807µs post 813µs diff -6146ns align 4096 pre 806µs on 830µs post 808µs diff 22.6µs align 2048 pre 803µs on 806µs post 807µs diff 344ns arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=512 2MiB 4.12M/s 1MiB 4.09M/s 512KiB 4.09M/s 256KiB 4.05M/s 128KiB 4M/s 64KiB 4M/s 32KiB 3.33M/s 16KiB 2.69M/s 8KiB 2.2M/s 4KiB 1.57M/s 2KiB 946K/s 1KiB 308K/s 512B 132K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=8192 --random 2MiB 4.12M/s 1MiB 4.12M/s 512KiB 4.1M/s 256KiB 4.07M/s 128KiB 3.96M/s 64KiB 3.93M/s 32KiB 2.35M/s 16KiB 1.31M/s 8KiB 777K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=65536 --random --open-au-nr=4 2MiB 4.07M/s 1MiB 4.14M/s 512KiB 4.08M/s 256KiB 4.05M/s 128KiB 3.93M/s 64KiB 3.87M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=65536 --random --open-au-nr=8 2MiB 4.08M/s 1MiB 4.12M/s 512KiB 4.05M/s 256KiB 4.01M/s 128KiB 3.85M/s 64KiB 3.72M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*512] /dev/sdc --blocksize=2048 --open-au-nr=8 512KiB 3.96M/s 256KiB 4.02M/s 128KiB 3.92M/s 64KiB 3.77M/s 32KiB 1.71M/s 16KiB 846K/s 8KiB 428K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=5 256KiB 4.09M/s 128KiB 3.82M/s 64KiB 3.72M/s 32KiB 3.65M/s 16KiB 2.9M/s 8KiB 2.1M/s 4KiB 1.46M/s 2KiB 869K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=6 256KiB 4.08M/s 128KiB 4.05M/s 64KiB 4.02M/s 32KiB 2.78M/s 16KiB 1.57M/s 8KiB 893K/s 4KiB 501K/s 2KiB 273K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=4 --random 256KiB 4.07M/s 128KiB 3.84M/s 64KiB 3.8M/s 32KiB 2.95M/s 16KiB 2.17M/s 8KiB 1.66M/s 4KiB 1.16M/s 2KiB 684K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=5 --random 256KiB 3.99M/s 128KiB 3.82M/s 64KiB 3.7M/s 32KiB 2.85M/s 16KiB 1.66M/s 8KiB 745K/s 4KiB 369K/s 2KiB 200K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --findfat --fat-nr=8 --random 256KiB 4.44M/s 4.01M/s 4.31M/s 4.04M/s 4.33M/s 4.02M/s 4.34M/s 3.52M/s 128KiB 3.94M/s 3.91M/s 4.11M/s 3.95M/s 4.27M/s 3.96M/s 4.26M/s 3.39M/s 64KiB 4.12M/s 3.99M/s 4.25M/s 3.93M/s 4.33M/s 4.03M/s 4.22M/s 3.38M/s 32KiB 3.48M/s 3.51M/s 3.54M/s 2.56M/s 3.29M/s 2.03M/s 2.75M/s 2.32M/s 16KiB 2.3M/s 2.19M/s 2.81M/s 1.9M/s 2.8M/s 1.57M/s 2.71M/s 1.31M/s 8KiB 1.86M/s 1.19M/s 1.76M/s 1.23M/s 1.73M/s 1.14M/s 1.75M/s 1.24M/s 4KiB 1.18M/s 879K/s 1.23M/s 1.06M/s 1.27M/s 1.07M/s 1.24M/s 1.05M/s 2KiB 744K/s 708K/s 771K/s 778K/s 813K/s 743K/s 838K/s 767K/s

14 years, 1 month

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Transcend 8 GB 133x CF (different one)

by Arnd Bergmann

Disk /dev/sdd: 8 GB, 8019099648 bytes 16 heads, 63 sectors/track, 15538 cylinders, total 15662304 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdd1 * 63 15661295 7830616 b FAT32 sudo dosfsck /dev/sdd1 dosfsck 3.0.9, 31 Jan 2010, FAT32, LFN /dev/sdd1: 1 files, 1/244646 clusters $ sudo ./flashbench -a /dev/sdd --blocksize=1024 --count=100 align 1073741824 pre 599µs on 621µs post 599µs diff 22.6µs align 536870912 pre 581µs on 601µs post 579µs diff 21.4µs align 268435456 pre 586µs on 607µs post 583µs diff 22.1µs align 134217728 pre 590µs on 610µs post 591µs diff 19.5µs align 67108864 pre 593µs on 615µs post 597µs diff 20.4µs align 33554432 pre 584µs on 606µs post 587µs diff 20.2µs align 16777216 pre 587µs on 607µs post 588µs diff 19.4µs align 8388608 pre 583µs on 608µs post 587µs diff 23µs align 4194304 pre 583µs on 604µs post 580µs diff 23.1µs align 2097152 pre 575µs on 601µs post 587µs diff 20.2µs align 1048576 pre 587µs on 588µs post 583µs diff 3.37µs align 524288 pre 583µs on 585µs post 582µs diff 2.6µs align 262144 pre 587µs on 592µs post 592µs diff 2.17µs align 131072 pre 586µs on 585µs post 584µs diff 489ns align 65536 pre 585µs on 587µs post 586µs diff 1.63µs align 32768 pre 592µs on 594µs post 585µs diff 5.5µs align 16384 pre 587µs on 590µs post 586µs diff 3.52µs align 8192 pre 588µs on 605µs post 587µs diff 17.2µs align 4096 pre 585µs on 588µs post 587µs diff 2.27µs align 2048 pre 585µs on 583µs post 581µs diff -189ns $ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=4 --random 2MiB 16.6M/s 1MiB 8.21M/s 512KiB 4.06M/s 256KiB 2.45M/s 128KiB 1.23M/s 64KiB 631K/s 32KiB 315K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=1 --random 2MiB 7.23M/s 1MiB 7.22M/s 512KiB 6.36M/s 256KiB 7.84M/s 128KiB 4.76M/s 64KiB 4.64M/s 32KiB 4.49M/s 16KiB 4.25M/s 8KiB 3.43M/s 4KiB 2.44M/s 2KiB 1.19M/s 1KiB 589K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=1 --random 2MiB 6.61M/s 1MiB 6.22M/s 512KiB 6.12M/s 256KiB 6.29M/s 128KiB 6.18M/s 64KiB 6.23M/s 32KiB 4.88M/s 16KiB 4.74M/s 8KiB 4.14M/s 4KiB 2.41M/s 2KiB 1.19M/s 1KiB 592K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=2 --random 2MiB 7.64M/s 1MiB 12.2M/s 512KiB 8.75M/s 256KiB 4.91M/s 128KiB 4.73M/s 64KiB 4.65M/s 32KiB 3.34M/s 16KiB 4.28M/s 8KiB 3.39M/s 4KiB 2.41M/s 2KiB 1.2M/s 1KiB 587K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=2 --random 2MiB 6.41M/s 1MiB 6.55M/s 512KiB 6.3M/s 256KiB 6.18M/s 128KiB 5.77M/s 64KiB 5.76M/s 32KiB 5.46M/s 16KiB 4.79M/s 8KiB 4.26M/s 4KiB 2.46M/s 2KiB 1.19M/s 1KiB 578K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=3 --random 2MiB 9.38M/s 1MiB 3.28M/s 512KiB 6.47M/s 256KiB 1.69M/s 128KiB 1.76M/s 64KiB 971K/s 32KiB 479K/s 16KiB 264K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=3 --random 2MiB 7.25M/s 1MiB 10.1M/s 512KiB 7.32M/s 256KiB 3.56M/s 128KiB 1.67M/s 64KiB 847K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=2097152 --open-au-nr=3 2MiB 24.2M/s 1MiB 24.2M/s 512KiB 24.1M/s 256KiB 23.1M/s 128KiB 8.03M/s 64KiB 22.6M/s 32KiB 20.1M/s 16KiB 16.4M/s 8KiB 10.9M/s 4KiB 6.48M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=2097152 --open-au-nr=4 2MiB 24.3M/s 1MiB 12.3M/s 512KiB 3.11M/s 256KiB 1.43M/s 128KiB 690K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=3 1MiB 6.41M/s 512KiB 7.56M/s 256KiB 5.67M/s 128KiB 6.82M/s 64KiB 11.2M/s 32KiB 5.43M/s 16KiB 6.74M/s 8KiB 6.59M/s 4KiB 2.98M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=4 1MiB 9.22M/s 512KiB 7.75M/s 256KiB 5.87M/s 128KiB 5.91M/s 64KiB 5.97M/s 32KiB 5.81M/s 16KiB 5.46M/s 8KiB 4.45M/s 4KiB 3.28M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=5 1MiB 6.64M/s 512KiB 6.48M/s 256KiB 6.25M/s 128KiB 5.38M/s 64KiB 4.59M/s 32KiB 5.27M/s 16KiB 4.98M/s 8KiB 4.16M/s 4KiB 3.03M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=6 1MiB 7.76M/s 512KiB 3.37M/s 256KiB 1.64M/s 128KiB 761K/s ^C

14 years, 1 month

1
1
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Numonyx SMC02GBFK6E CF card

by Arnd Bergmann

Disk /dev/sdc: 2 GB, 2048094720 bytes 255 heads, 63 sectors/track, 249 cylinders, total 4000185 sectors Units = sectors of 1 * 512 = 512 bytes arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --erasesize=$[512*1024] --open-au-nr=1 --findfat --fat-nr=6 512KiB 3.02M/s 15.2M/s 14.8M/s 16.3M/s 16.2M/s 14.7M/s 256KiB 3.19M/s 16.7M/s 14M/s 15.5M/s 14.6M/s 14.5M/s 128KiB 2.98M/s 14.8M/s 14.1M/s 14.3M/s 14.4M/s 15.6M/s 64KiB 3.17M/s 14.5M/s 14.4M/s 14.5M/s 14.2M/s 14.9M/s 32KiB 2.93M/s 14.4M/s 14M/s 14.8M/s 14.9M/s 14.1M/s 16KiB 3.07M/s 12.9M/s 12M/s 12.3M/s 12.7M/s 12.6M/s 8KiB 2.76M/s 10.9M/s 10.6M/s 10.6M/s 10.6M/s 10.7M/s 4KiB 2.53M/s 7.68M/s 7.66M/s 7.73M/s 7.51M/s 7.72M/s 2KiB 1.98M/s 4.09M/s 4.06M/s 4.05M/s 4.07M/s 4.07M/s 1KiB 1.63M/s 2.7M/s 2.71M/s 2.71M/s 2.71M/s 2.71M/s 512B 919K/s 1.37M/s 1.36M/s 1.36M/s 1.36M/s 1.36M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --erasesize=$[512*1024] --open-au-nr=1 --findfat --fat-nr=6 --random 512KiB 3.07M/s 15.3M/s 14.5M/s 15.4M/s 14.8M/s 15M/s 256KiB 3.3M/s 11.3M/s 6.01M/s 8.24M/s 7.66M/s 7.15M/s 128KiB 3.34M/s 5.3M/s 5.65M/s 4.6M/s 5.22M/s 5.23M/s 64KiB 3.22M/s 2.55M/s 2.47M/s 2.6M/s 2.48M/s 2.56M/s 32KiB 3.16M/s 1.52M/s 1.55M/s 1.52M/s 1.51M/s 1.56M/s 16KiB 3M/s 730K/s 726K/s 738K/s 727K/s 723K/s 8KiB 2.81M/s 354K/s 355K/s 356K/s 351K/s 355K/s 4KiB 2.68M/s 194K/s 194K/s 195K/s 196K/s 196K/s 2KiB 2.02M/s 96K/s 95.6K/s 95.5K/s 94.3K/s 96.2K/s 1KiB 1.58M/s 48.2K/s 47.8K/s 48.4K/s 48.4K/s 48.2K/s 512B 783K/s 23.7K/s 23.6K/s 23.5K/s 23.9K/s 24.1K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --open-au --erasesize=$[512*1024] --open-au-nr=1 512KiB 15.2M/s 256KiB 14.6M/s 128KiB 15.4M/s 64KiB 14.5M/s 32KiB 14.9M/s 16KiB 12.6M/s 8KiB 10.4M/s 4KiB 6.87M/s 2KiB 4.08M/s 1KiB 2.73M/s 512B 1.37M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --open-au --erasesize=$[512*1024] --open-au-nr=2 512KiB 15M/s 256KiB 10.4M/s 128KiB 14.7M/s 64KiB 15.7M/s 32KiB 14.8M/s 16KiB 12.7M/s 8KiB 10.7M/s 4KiB 7.59M/s 2KiB 4.07M/s 1KiB 2.72M/s 512B 1.36M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --open-au --erasesize=$[512*1024] --open-au-nr=3 512KiB 15.6M/s 256KiB 8.85M/s 128KiB 4.35M/s 64KiB 2.04M/s 32KiB 991K/s 16KiB 491K/s 8KiB 245K/s 4KiB 122K/s 2KiB 60.5K/s 1KiB 30.1K/s 512B 15.1K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --open-au --erasesize=$[512*1024] --open-au-nr=1 --random 512KiB 15.2M/s 256KiB 10.3M/s 128KiB 8.55M/s 64KiB 3.22M/s 32KiB 1.75M/s 16KiB 785K/s 8KiB 376K/s 4KiB 202K/s 2KiB 98.6K/s 1KiB 48.8K/s 512B 24.3K/s

14 years, 1 month

1
1
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Kingston CF/4GB (2008)

by Arnd Bergmann

# flashbench -a suggests 1 MB erase blocks, but later results suggest 2 MB arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize 1024 align 536870912 pre 543µs on 667µs post 544µs diff 124µs align 268435456 pre 546µs on 673µs post 546µs diff 127µs align 134217728 pre 540µs on 666µs post 544µs diff 123µs align 67108864 pre 535µs on 667µs post 540µs diff 130µs align 33554432 pre 545µs on 669µs post 544µs diff 124µs align 16777216 pre 537µs on 668µs post 537µs diff 131µs align 8388608 pre 541µs on 666µs post 544µs diff 124µs align 4194304 pre 544µs on 672µs post 547µs diff 127µs align 2097152 pre 557µs on 671µs post 547µs diff 120µs align 1048576 pre 547µs on 671µs post 546µs diff 124µs align 524288 pre 547µs on 666µs post 559µs diff 114µs align 262144 pre 541µs on 661µs post 539µs diff 121µs align 131072 pre 546µs on 664µs post 544µs diff 119µs align 65536 pre 546µs on 668µs post 560µs diff 115µs align 32768 pre 546µs on 669µs post 543µs diff 124µs align 16384 pre 544µs on 672µs post 549µs diff 125µs align 8192 pre 545µs on 668µs post 544µs diff 123µs align 4096 pre 544µs on 554µs post 547µs diff 8.64µs align 2048 pre 544µs on 548µs post 544µs diff 3.87µs Disk /dev/sdc: 4 GB, 4013936640 bytes 255 heads, 63 sectors/track, 488 cylinders, total 7839720 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 63 7846271 3927861 b FAT32 arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=1048576 /dev/sdc --blocksize=1024 1MiB 8.11M/s 512KiB 2.47M/s 256KiB 8.13M/s 128KiB 7.96M/s 64KiB 8.15M/s 32KiB 2.45M/s 16KiB 7.64M/s 8KiB 6.99M/s 4KiB 1.64M/s 2KiB 1.03M/s 1KiB 520K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=4194304 /dev/sdc --blocksize=1024 4MiB 9.16M/s 2MiB 9.09M/s 1MiB 9.09M/s 512KiB 9.1M/s 256KiB 9.05M/s 128KiB 8.97M/s 64KiB 8.99M/s 32KiB 8.74M/s 16KiB 8.44M/s 8KiB 7.82M/s 4KiB 3.73M/s 2KiB 1.9M/s 1KiB 959K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=1024 2MiB 5.2M/s 1MiB 5.66M/s 512KiB 9.22M/s 256KiB 9.29M/s 128KiB 9.16M/s 64KiB 9.17M/s 32KiB 8.88M/s 16KiB 8.58M/s 8KiB 7.97M/s 4KiB 3.79M/s 2KiB 1.9M/s 1KiB 964K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=1024 --open-au-nr=2 2MiB 9.44M/s 1MiB 9.38M/s 512KiB 9.27M/s 256KiB 9.25M/s 128KiB 9.17M/s 64KiB 9.22M/s 32KiB 8.96M/s 16KiB 8.56M/s 8KiB 7.94M/s 4KiB 3.8M/s 2KiB 1.9M/s 1KiB 963K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=1024 --open-au-nr=2 --random 2MiB 9.38M/s 1MiB 5.23M/s 512KiB 3.84M/s 256KiB 3.82M/s 128KiB 3.83M/s 64KiB 3.83M/s 32KiB 3.78M/s 16KiB 3.72M/s 8KiB 3.58M/s 4KiB 1.89M/s 2KiB 1.05M/s 1KiB 519K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/4] /dev/sdc --blocksize=8192 --open-au-nr=2 --random 1MiB 8.25M/s 512KiB 8.29M/s 256KiB 8.24M/s 128KiB 2.51M/s 64KiB 8.17M/s 32KiB 8.03M/s 16KiB 7.78M/s 8KiB 2.41M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=4 2MiB 5.47M/s 1MiB 5.75M/s 512KiB 9.37M/s 256KiB 9.33M/s 128KiB 9.26M/s 64KiB 9.17M/s 32KiB 8.98M/s 16KiB 8.69M/s 8KiB 7.98M/s # 6 * 2 MB is great in linear mode arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=6 2MiB 9.42M/s 1MiB 6.56M/s 512KiB 9.4M/s 256KiB 9.29M/s 128KiB 9.22M/s 64KiB 9.24M/s 32KiB 9.02M/s 16KiB 8.68M/s 8KiB 7.95M/s # More than 6 * 2 MB is not arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=7 2MiB 5.16M/s 1MiB 4.16M/s 512KiB 1.58M/s 256KiB 833K/s 128KiB 434K/s 64KiB 223K/s 32KiB 113K/s 16KiB 56.7K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=8 2MiB 9.42M/s 1MiB 4.62M/s 512KiB 1.58M/s 256KiB 831K/s ^C # 6 * 2 MB is fine in random mode arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=6 --random 2MiB 4.28M/s 1MiB 3.91M/s 512KiB 3.92M/s 256KiB 3.91M/s 128KiB 3.9M/s 64KiB 3.89M/s 32KiB 3.85M/s 16KiB 3.79M/s 8KiB 3.62M/s # 7 * 2 MB breaks in random mode arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=7 --random 2MiB 9.53M/s 1MiB 3.89M/s 512KiB 1.67M/s 256KiB 850K/s ^C # Trying 6*4MB, also bad arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304] /dev/sdc --blocksize=8192 --open-au-nr=6 --random 4MiB 7.07M/s 2MiB 9.53M/s 1MiB 3.17M/s 512KiB 2.1M/s 256KiB 1.28M/s # Trying 6 * 2 MB with offset 1 MB arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/2] /dev/sdc --blocksize=8192 --open-au-nr=6 --random --offset=$[17 * 1024 * 1024] 2MiB 2.88M/s 1MiB 3.57M/s 512KiB 1.62M/s 256KiB 1.1M/s 128KiB 686K/s ^C # No special FAT area: arnd@wuerfel:~/flashbench$ sudo ./flashbench --findfat --erasesize=$[4194304/2] /dev/sdc --blocksize=512 --random --fat-nr=6 2MiB 4.12M/s 9.48M/s 9.52M/s 9.53M/s 9.63M/s 9.53M/s 1MiB 8.2M/s 3.91M/s 3.91M/s 3.93M/s 3.92M/s 3.9M/s 512KiB 3.9M/s 3.92M/s 3.92M/s 3.92M/s 3.94M/s 3.89M/s 256KiB 3.9M/s 3.93M/s 3.89M/s 3.9M/s 3.92M/s 3.91M/s 128KiB 3.92M/s 3.88M/s 3.88M/s 3.9M/s 3.91M/s 3.9M/s 64KiB 3.88M/s 3.89M/s 3.9M/s 3.88M/s 3.84M/s 3.89M/s 32KiB 3.86M/s 3.84M/s 3.78M/s 3.8M/s 3.86M/s 3.85M/s 16KiB 3.77M/s 3.73M/s 3.74M/s 3.77M/s 3.74M/s 3.72M/s 8KiB 3.65M/s 3.59M/s 3.63M/s 3.65M/s 3.59M/s 3.6M/s 4KiB 1.65M/s 1.66M/s 1.7M/s 1.7M/s 1.7M/s 1.7M/s 2KiB 1.06M/s 1.06M/s 1.07M/s 1.07M/s 1.07M/s 1.07M/s 1KiB 527K/s 526K/s 523K/s 525K/s 521K/s 525K/s 512B 260K/s 261K/s 260K/s 260K/s 259K/s 260K/s # looking for minimum alignment, 8KB arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/4] /dev/sdc --blocksize=8192 --open-au-nr=1 --random --offset=$[16 * 1024 * 1024 + 8192] 1MiB 8.48M/s 512KiB 8.34M/s 256KiB 8.49M/s 128KiB 2.52M/s 64KiB 8.47M/s 32KiB 8.15M/s 16KiB 7.99M/s 8KiB 2.41M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/4] /dev/sdc --blocksize=8192 --open-au-nr=1 --random --offset=$[16 * 1024 * 1024 + 4096] 1MiB 7.73M/s 512KiB 7.75M/s 256KiB 7.41M/s 128KiB 2.39M/s 64KiB 7.19M/s 32KiB 6.18M/s 16KiB 2.07M/s 8KiB 3.34M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/4] /dev/sdc --blocksize=8192 --open-au-nr=1 --random --offset=$[16 * 1024 * 1024 + 2048] 1MiB 7.72M/s 512KiB 2.44M/s 256KiB 7.44M/s 128KiB 7.12M/s 64KiB 7.09M/s 32KiB 2.26M/s 16KiB 4.73M/s 8KiB 1.73M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/4] /dev/sdc --blocksize=8192 --open-au-nr=1 --random --offset=$[16 * 1024 * 1024 + 1024] 1MiB 7.85M/s 512KiB 7.52M/s 256KiB 7.27M/s 128KiB 2.4M/s 64KiB 7.17M/s 32KiB 6.24M/s 16KiB 2.06M/s 8KiB 3.34M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[4194304/4] /dev/sdc --blocksize=8192 --open-au-nr=1 --random --offset=$[16 * 1024 * 1024 + 512] 1MiB 7.72M/s 512KiB 2.45M/s 256KiB 7.49M/s 128KiB 7.2M/s 64KiB 2.41M/s 32KiB 6.2M/s 16KiB 4.71M/s 8KiB 1.73M/s 2KiB 902K/s 1KiB 424K/s 512B 260K/s

14 years, 1 month

1
1
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XceedCF Industrial Grade CF 16 GB

by Arnd Bergmann

Disk /dev/sdc: 16 GB, 16384757760 bytes 255 heads, 63 sectors/track, 1992 cylinders, total 32001480 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 63 32014079 16008741 b FAT32 Warning: Partition 1 does not end on cylinder boundary. align 2147483648 pre 505µs on 605µs post 517µs diff 94.4µs align 1073741824 pre 491µs on 600µs post 498µs diff 105µs align 536870912 pre 496µs on 607µs post 489µs diff 115µs align 268435456 pre 506µs on 607µs post 514µs diff 97.3µs align 134217728 pre 527µs on 604µs post 521µs diff 80.6µs align 67108864 pre 492µs on 606µs post 496µs diff 113µs align 33554432 pre 511µs on 607µs post 516µs diff 93.2µs align 16777216 pre 479µs on 592µs post 511µs diff 97.8µs align 8388608 pre 479µs on 479µs post 478µs diff 798ns align 4194304 pre 513µs on 605µs post 494µs diff 101µs align 2097152 pre 558µs on 605µs post 559µs diff 46.6µs align 1048576 pre 474µs on 590µs post 508µs diff 99.7µs align 524288 pre 470µs on 476µs post 474µs diff 3.75µs align 262144 pre 474µs on 480µs post 478µs diff 4.35µs align 131072 pre 473µs on 475µs post 476µs diff 948ns align 65536 pre 474µs on 479µs post 477µs diff 3.13µs align 32768 pre 480µs on 480µs post 477µs diff 1.46µs align 16384 pre 477µs on 481µs post 480µs diff 1.97µs align 8192 pre 475µs on 479µs post 475µs diff 3.88µs align 4096 pre 471µs on 479µs post 477µs diff 5.65µs align 2048 pre 479µs on 483µs post 482µs diff 2.78µs # linear writing good up to 6x1MB arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --open-au --erasesize=$[1024*1024] --open-au-nr=1 1MiB 28.2M/s 512KiB 28M/s 256KiB 27.2M/s 128KiB 24.9M/s 64KiB 26.7M/s 32KiB 22.2M/s 16KiB 16.7M/s 8KiB 10.4M/s 4KiB 7.45M/s 2KiB 4.14M/s 1KiB 1.44M/s 512B 678K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=$[512] --open-au --erasesize=$[1024*1024] --open-au-nr=2 1MiB 27.6M/s 512KiB 27.5M/s 256KiB 26.7M/s 128KiB 24.9M/s 64KiB 26M/s 32KiB 21.7M/s 16KiB 16.4M/s 8KiB 10.3M/s 4KiB 7.36M/s 2KiB 4.11M/s 1KiB 1.53M/s 512B 582K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --open-au --erasesize=$[1024*1024] --open-au-nr=4 1MiB 21.4M/s 512KiB 27.4M/s 256KiB 26.7M/s 128KiB 24.7M/s 64KiB 26M/s 32KiB 21.8M/s 16KiB 16.4M/s 8KiB 10.1M/s 4KiB 7.28M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --open-au --erasesize=$[1024*1024] --open-au-nr=6 1MiB 16.4M/s 512KiB 27.4M/s 256KiB 26.6M/s 128KiB 24.9M/s 64KiB 26.1M/s 32KiB 21.7M/s 16KiB 16.4M/s 8KiB 10.2M/s 4KiB 7.29M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --open-au --erasesize=$[1024*1024] --open-au-nr=7 1MiB 27.5M/s 512KiB 16.6M/s 256KiB 7.18M/s 128KiB 3.96M/s 64KiB 2.08M/s 32KiB 1.06M/s 16KiB 527K/s 8KiB 262K/s 4KiB 131K/s # random writes always bad arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --open-au --erasesize=$[1024*1024] --open-au-nr=1 --random 1MiB 25.6M/s 512KiB 10.3M/s 256KiB 18.8M/s 128KiB 8.1M/s 64KiB 3.37M/s 32KiB 1.74M/s 16KiB 888K/s 8KiB 437K/s 4KiB 215K/s # at least 1 MB erase block, seen from lower throughput at 512KB arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --open-au --erasesize=$[512*1024] --open-au-nr=6 512KiB 17.1M/s 256KiB 16M/s 128KiB 15.2M/s 64KiB 12.5M/s 32KiB 14.1M/s 16KiB 11.6M/s 8KiB 8.07M/s 4KiB 6.09M/s # no special FAT area! arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --erasesize=$[1024*1024] --findfat --fat-nr=6 1MiB 28.5M/s 26.1M/s 27.6M/s 26.6M/s 28.4M/s 26.1M/s 512KiB 27.4M/s 25.9M/s 26.8M/s 26.3M/s 27.8M/s 25.8M/s 256KiB 27.3M/s 25.3M/s 26.4M/s 25.6M/s 27.3M/s 25.2M/s 128KiB 25.4M/s 23.4M/s 25M/s 23.8M/s 25.3M/s 23.4M/s 64KiB 26.7M/s 24.8M/s 25.4M/s 24.7M/s 26.7M/s 24.8M/s 32KiB 22.3M/s 20.8M/s 21.6M/s 21.1M/s 22M/s 20.9M/s 16KiB 16.8M/s 16M/s 16.2M/s 16.1M/s 16.7M/s 15.9M/s 8KiB 10.3M/s 9.77M/s 10.3M/s 10.2M/s 10.4M/s 9.78M/s 4KiB 7.45M/s 6.9M/s 7.24M/s 7.27M/s 7.49M/s 6.89M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --erasesize=$[1024*1024] --findfat --fat-nr=6 --random 1MiB 28.5M/s 26M/s 27.6M/s 26.5M/s 27.9M/s 26.2M/s 512KiB 21.1M/s 19.5M/s 20.5M/s 19.5M/s 21.2M/s 19.3M/s 256KiB 18.9M/s 17.3M/s 12.5M/s 17.5M/s 18.9M/s 17.2M/s 128KiB 8.05M/s 7.23M/s 7.65M/s 4.81M/s 5.37M/s 7.23M/s 64KiB 3.32M/s 3.09M/s 4.44M/s 4.37M/s 4.77M/s 3.09M/s 32KiB 1.84M/s 1.63M/s 1.49M/s 1.68M/s 1.56M/s 1.63M/s 16KiB 874K/s 743K/s 824K/s 740K/s 872K/s 789K/s 8KiB 455K/s 395K/s 414K/s 408K/s 435K/s 391K/s

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