Flashbench-results

flashbench-results@lists.linaro.org

9 participants
746 discussions

by Ajax Criterion

Hi again, I was able to recover *most* of the test results for my Kingston drive. I've stitched this together from several chunks that were recovered, so bits and pieces are missing throughout, but most of the info is here. Unfortunately, I wasn't able to retrieve the full ouput of the 'flashbench -a' test -- I suppose you can take my word that it has a 4MB erase size until I can run some more tests on this drive :) KINGSTON 8GB Datatraveler DT101 G2 bash-4.1# fdisk -lu /dev/sdb Disk /dev/sdb: 7998 MB, 7998537728 bytes 255 heads, 63 sectors/track, 972 cylinders, total 15622144 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: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdb1 63 3148739 1574338+ b W95 FAT32 /dev/sdb2 * 3148740 15615179 6233220 83 Linux bash-4.1# ## FAT32 in the front, EXT2 in the back lsusb: Bus 002 Device 002: ID 0930:6545 Toshiba Corp. Kingston DataTraveler 102 Flash Drive / HEMA Flash Drive 2 GB / PNY Attache 4GB Stick bash-4.1# ./flashbench -a /dev/sdb --blocksize=1024 --count=32 align 2147483648 pre 617 <missing information> bash-4.1# ./flashbench -O --open-au-nr=1 /dev/sdb 4MiB 4.94M/s 2MiB 4.99M/s 1MiB 5.05M/s 512KiB 5.15M/s 256KiB 5.07M/s 128KiB 4.62M/s 64KiB 5.15M/s 32KiB 5.63M/s 16KiB 4.36M/s bash-4.1# ./flashbench -O --open-au-nr=2 /dev/sdb 4MiB 13.7M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 14M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 10.8M/s 16KiB 6.58M/s bash-4.1# ./flashbench -O --open-au-nr=3 /dev/sdb 4MiB 13.3M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 13.9M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 10.9M/s 16KiB 6.6M/s bash-4.1# ./flashbench -O --open-au-nr=4 /dev/sdb 4MiB 13.3M/s 2MiB 13.1M/s 1MiB 13.7M/s 512KiB 13.8M/s 256KiB 10.9M/s 128KiB 11.3M/s 64KiB 15.4M/s 32KiB 11.1M/s 16KiB 6.91M/s bash-4.1# ./flashbench -O --open-au-nr=5 /dev/sdb 4MiB 13.3M/s 2MiB 13M/s 1MiB 13.4M/s 512KiB 13.6M/s 256KiB 13.3M/s 128KiB 11.1M/s 64KiB 15M/s 32KiB 11M/s 16KiB 6.68M/s bash-4.1# ./flashbench -O --open-au-nr=6 /dev/sdb 4MiB 13.7M/s 2MiB 13.3M/s 1MiB 13.4M/s 512KiB 13.7M/s 256KiB 13.4M/s 128KiB 11.3M/s 64KiB 15.3M/s 32KiB 10.8M/s 16KiB 6.77M/s bash-4.1# ./flashbench -O --open-au-nr=8 /dev/sdb 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 12.1M/s 256KiB 13.5M/s 128KiB 11.3M/s 64KiB 15M/s 32KiB 11M/s 16KiB 6.58M/s bash-4.1# ./flashbench -O --open-au-nr=10 /dev/sdb 4MiB 13.3M/s 2MiB 12.1M/s 1MiB 10.6M/s 512KiB 8.78M/s 256KiB 13.5M/s 128KiB 11.1M/s 64KiB 15M/s 32KiB 11M/s 16KiB 6.55M/s bash-4.1# ./flashbench -O --open-au-nr=1 /dev/sdb --random 4MiB 4.95M/s 2MiB 5.13M/s 1MiB 5.27M/s 512KiB 5.32M/s 256KiB 2.94M/s 128KiB 4.56M/s 64KiB 5.91M/s 32KiB 5.65M/s 16KiB 3.2M/s bash-4.1# ./flashbench -O --open-au-nr=2 /dev/sdb --random 4MiB 13.3M/s 2MiB 9.34M/s 1MiB 5.85M/s 512KiB 3.75M/s 256KiB 5.2M/s 128KiB 4.23M/s 64KiB 3.14M/s 32KiB 3.05M/s 16KiB 1.87M/s bash-4.1# ./flashbench -O --open-au-nr=3 /dev/sdb --random 4MiB 13.3M/s 2MiB 9.4M/s 1MiB 5.85M/s 512KiB 3.75M/s 256KiB 5.22M/s 128KiB 4.21M/s 64KiB 3.1M/s 32KiB 3.03M/s 16KiB 1.87M/s bash-4.1# ./flashbench -O --open-au-nr=1 /dev/sdb --random --blocksize=512 4MiB 13.4M/s 2MiB 9.25M/s 1MiB 5.89M/s 512KiB 3.79M/s 256KiB 5.54M/s 128KiB 4.64M/s 64KiB 3.61M/s 32KiB 4.18M/s 16KiB 2.84M/s 8KiB 1.34M/s 4KiB 843K/s 2KiB 386K/s 1KiB 188K/s 512B 102K/s bash-4.1# s 32KiB 10.9M/s bash-4.1# ./flashbench /dev/sdb --blocksize=32768 --open-au --open-au-nr=6 --erasesize=8388608 8MiB 13.4M/s 4MiB 13.4M/s 2MiB 13.1M/s 1MiB 12.5M/s 512KiB 13.6M/s 256KiB 13.5M/s 128KiB 11.1M/s 64KiB 15M/s 32KiB 11M/s bash-4.1# -blocksize=4096 4MiB 4.96M/s 2MiB 5.01M/s 1MiB 5.04M/s 512KiB 5.16M/s 256KiB 5.06M/s 128KiB 4.61M/s 64KiB 5.16M/s 32KiB 5.64M/s 16KiB 4.37M/s 8KiB 2.02M/s 4KiB 1.52M/s bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.2M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 13.8M/s 256KiB 14.5M/s 128KiB 11.2M/s 64KiB 16.1M/s 32KiB 11.9M/s 16KiB 7.34M/s 8KiB 2.96M/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.7M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 13.6M/s 256KiB 13.6M/s 128KiB 11.2M/s 64KiB 15.2M/s 32KiB 10.9M/s 16KiB 6.62M/s 8KiB 2.91M/s bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 14.2M/s 256KiB 13.5M/s 128KiB 11.4M/s 64KiB 15.4M/s 32KiB 10.9M/s 16KiB 6.6M/s 8KiB 2.85M/s bash-4.1# ./flashbench --open-au --open-au-nr=4 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.3M/s 2MiB 13.4M/s 1MiB 13.4M/s 512KiB 13.6M/s 256KiB 10.9M/s 128KiB 11.3M/s 64KiB 15M/s 32KiB 10.8M/s 16KiB 6.57M/s 8KiB 2.83M/s bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.5M/s 2MiB 13.3M/s 1MiB 13.6M/s 512KiB 13.6M/s 256KiB 13.5M/s 128KiB 11.1M/s 64KiB 15.1M/s 32KiB 10.9M/s 16KiB 6.84M/s 8KiB 2.84M/s bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdb --erasesize=$[4 * 1024 * 1024] 4MiB 13.6M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 13.6M/s 256KiB 13.5M/s 128KiB 11.3M/s 64KiB 15.1M/s 32KiB 10.8M/s 16KiB 6.82M/s bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 11.3M/s 512KiB 13.5M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 10.8M/s 16KiB 6.58M/s 8KiB 2.82M/s 4KiB 1.44M/s 2KiB 744K/s bash-4.1# ./flashbench --open-au --open-au-nr=4 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.6M/s 512KiB 13.5M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15M/s 32KiB 10.9M/s 16KiB 6.56M/s 8KiB 2.85M/s 4KiB 1.45M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 5.12M/s 2MiB 4.94M/s 1MiB 5.02M/s 512KiB 5.08M/s 256KiB 4.77M/s 128KiB 4.19M/s 64KiB 4.38M/s 32KiB 3.44M/s 16KiB 2.45M/s 8KiB 1.77M/s 4KiB 1.45M/s 2KiB 750K/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 13.7M/s 2MiB 13.1M/s 1MiB 13.5M/s 512KiB 13.7M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.2M/s 32KiB 11.9M/s 16KiB 6.61M/s 8KiB 2.83M/s 4KiB 1.44M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 5.51M/s 2MiB 5.11M/s 1MiB 5.16M/s 512KiB 5.15M/s 256KiB 5.09M/s 128KiB 4.47M/s 64KiB 16.1M/s 32KiB 11.8M/s 16KiB 7.3M/s 8KiB 3.07M/s 4KiB 1.54M/s 2KiB 813K/s bash-4.1# bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 --random 4MiB 13.3M/s 2MiB 9.25M/s 1MiB 5.87M/s 512KiB 3.77M/s 256KiB 5.5M/s 128KiB 4.62M/s 64KiB 3.6M/s 32KiB 4.18M/s 16KiB 2.84M/s 8KiB 1.33M/s 4KiB 840K/s 2KiB 384K/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 --random 4MiB 7.8M/s 2MiB 6.77M/s 1MiB 5.83M/s 512KiB 3.74M/s 256KiB 5.22M/s 128KiB 4.21M/s 64KiB 3.09M/s 32KiB 3.04M/s 16KiB 1.87M/s 8KiB 900K/s 4KiB 521K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 --random 4MiB 13.3M/s 2MiB 7.64M/s 1MiB 5.83M/s 512KiB 3.74M/s 256KiB 5.18M/s 128KiB 4.2M/s 64KiB 3.1M/s 32KiB 3.04M/s 16KiB 1.86M/s 8KiB 901K/s 4KiB 520K/s ^C bash-4.1# bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[4 * 1024*1024] --random --blocksize=512 /dev/sdb 4MiB 3.37M/s 5.42M/s 13.3M/s 13.4M/s 13.3M/s 2MiB 5.11M/s 5.04M/s 9.25M/s 9.17M/s 9.25M/s 1MiB 5.24M/s 5.86M/s 5.86M/s 5.85M/s 5.86M/s 512KiB 5.29M/s 3.77M/s 3.77M/s 3.76M/s 3.77M/s 256KiB 2.92M/s 5.48M/s 5.49M/s 5.49M/s 5.48M/s 128KiB 4.49M/s 4.61M/s 4.6M/s 4.6M/s 4.6M/s 64KiB 5.86M/s 3.59M/s 3.59M/s 3.59M/s 3.6M/s 32KiB 5.62M/s 4.16M/s 4.17M/s 4.17M/s 4.16M/s 16KiB 4.1M/s 2.82M/s 2.82M/s 2.82M/s 2.81M/s 8KiB 1.35M/s 1.33M/s 1.33M/s 1.33M/s 1.33M/s 4KiB 706K/s 836K/s 837K/s 836K/s 837K/s ^C bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[4 * 1024*1024] --blocksize=512 /dev/sdb 4MiB 4.94M/s 13.4M/s 13.3M/s 13.3M/s 13.3M/s 2MiB 4.98M/s 13.2M/s 13.2M/s 13.2M/s 13.2M/s 1MiB 5.05M/s 13.5M/s 13.4M/s 13.5M/s 14.3M/s 512KiB 5.15M/s 13.7M/s 13.7M/s 13.8M/s 13.7M/s 256KiB 5.07M/s 13.7M/s 13.7M/s 13.8M/s 13.7M/s 128KiB 4.63M/s 11.1M/s 11.1M/s 11.2M/s 11M/s 64KiB 5.17M/s 16.1M/s 16.1M/s 16M/s 16M/s 32KiB 5.65M/s 11.9M/s 11.9M/s 11.9M/s 11.9M/s 16KiB 4.32M/s 7.33M/s 7.35M/s 7.35M/s 7.37M/s 8KiB 2.02M/s 2.95M/s 2.96M/s 2.95M/s 2.94M/s 4KiB 1.54M/s 1.54M/s 1.55M/s 1.54M/s 1.55M/s 2KiB 769K/s 812K/s 813K/s 815K/s 811K/s 1KiB 417K/s 407K/s 418K/s 418K/s 418K/s ^C bash-4.1# Again, if there are more tests you'd like to have done, just let me know and I can run them when I have a chance. I think I've rescued about as much as I can from the drive, so I should have it operational again soon :)

14 years, 10 months

SanDisk microSDHC class 4, 4 GB (for cameras)

by Peter Warasin

****************************************************** **** SanDisk microSDHC class 4, 4 GB (for cameras)**** ****************************************************** ==> /sys/block/mmcblk0/device/cid <== 0353445355303447800a58d43d00aa00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d8a7f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800100000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 0353445355303447800a58d43d00aa00 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x0a58d43d ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU04G ==> /sys/block/mmcblk0/device/date <== 10/2010 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) fdisk -ul /dev/sda Disk /dev/sda: 3965 MB, 3965190144 bytes 128 heads, 32 sectors/track, 1890 cylinders, total 7744512 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 align 134217728 pre 2.62ms on 2.61ms post 2.57ms diff 20.6µs align 67108864 pre 2.61ms on 2.61ms post 2.57ms diff 20.3µs align 33554432 pre 2.75ms on 2.78ms post 2.59ms diff 113µs align 16777216 pre 2.54ms on 2.6ms post 2.47ms diff 91.4µs align 8388608 pre 2.61ms on 2.6ms post 2.41ms diff 93.6µs align 4194304 pre 2.61ms on 2.61ms post 2.6ms diff -1301ns align 2097152 pre 2.61ms on 2.61ms post 2.61ms diff -115ns align 1048576 pre 2.61ms on 2.61ms post 2.61ms diff 5.14µs align 524288 pre 2.61ms on 2.61ms post 2.61ms diff 2.06µs align 262144 pre 2.61ms on 2.61ms post 2.61ms diff 4.23µs align 131072 pre 2.61ms on 2.61ms post 2.61ms diff 3.11µs align 65536 pre 2.62ms on 2.62ms post 2.62ms diff 945ns align 32768 pre 2.68ms on 2.67ms post 2.7ms diff -18986n -> 8MiB (??) $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*16] 16MiB 4.31M/s 8MiB 4.25M/s 4MiB 4.44M/s 2MiB 4.44M/s 1MiB 4.51M/s 512KiB 4.41M/s 256KiB 4.19M/s 128KiB 4.16M/s 64KiB 8.05M/s 32KiB 4.69M/s 16KiB 2.25M/s 8KiB 2.22M/s 4KiB 1.41M/s 2KiB 851K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*8] 8MiB 3.21M/s 4MiB 3.21M/s 2MiB 3.86M/s 1MiB 6.5M/s 512KiB 7.43M/s 256KiB 6.87M/s 128KiB 7.68M/s 64KiB 10M/s 32KiB 8.38M/s 16KiB 3.05M/s 8KiB 2.82M/s 4KiB 1.74M/s 2KiB 980K/s ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*1] 1MiB 6.96M/s 512KiB 7.67M/s 256KiB 7.01M/s 128KiB 7.76M/s 64KiB 10M/s 32KiB 7.65M/s 16KiB 3.07M/s 8KiB 2.94M/s 4KiB 1.71M/s 2KiB 997K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 7.26M/s 2MiB 7.14M/s 1MiB 7.67M/s 512KiB 7.45M/s 256KiB 6.85M/s 128KiB 7.88M/s 64KiB 10M/s 32KiB 8.38M/s 16KiB 3.02M/s 8KiB 2.86M/s 4KiB 1.74M/s 2KiB 956K/s -> ok, so it's more likely 4MiB ? $ ./flashbench /dev/sda3 --open-au-nr=2 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 5.55M/s 2MiB 7.32M/s 1MiB 7.73M/s 512KiB 7.44M/s 256KiB 6.87M/s 128KiB 7.75M/s 64KiB 9.25M/s 32KiB 8.42M/s 16KiB 3.02M/s 8KiB 2.84M/s 4KiB 1.73M/s 2KiB 972K/s $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 4.92M/s 2MiB 2.99M/s 1MiB 2.07M/s 512KiB 2.33M/s 256KiB 2.05M/s 128KiB 2.08M/s 64KiB 2.48M/s 32KiB 3.08M/s 16KiB 1.61M/s 8KiB 1.99M/s 4KiB 1.28M/s 2KiB 797K/s $ ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 3.91M/s 2MiB 2.73M/s 1MiB 1.65M/s 512KiB 1.45M/s 256KiB 1.4M/s 128KiB 1.49M/s 64KiB 385K/s 32KiB 2.46M/s 16KiB 1.53M/s 8KiB 1.66M/s 4KiB 1.13M/s 2KiB 705K/s $ ./flashbench /dev/sda3 --open-au-nr=7 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 3.75M/s 2MiB 2.72M/s 1MiB 1.43M/s 512KiB 1.23M/s 256KiB 1.19M/s 128KiB 1.26M/s 64KiB 1.78M/s 32KiB 1.65M/s 16KiB 1.41M/s 8KiB 1.31M/s 4KiB 1.11M/s 2KiB 689K/s $ ./flashbench /dev/sda3 --open-au-nr=10 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 4.25M/s 2MiB 2.98M/s 1MiB 1.26M/s 512KiB 939K/s 256KiB 902K/s 128KiB 816K/s 64KiB 306K/s 32KiB 1.12M/s 16KiB 676K/s 8KiB 503K/s ^C $ ./flashbench /dev/sda3 --open-au-nr=9 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 3.16M/s 2MiB 3.02M/s 1MiB 1.26M/s 512KiB 996K/s 256KiB 971K/s ^C -> ok, would say, it's 7 blocks ./flashbench /dev/sda3 --open-au-nr=7 -O --blocksize=2048 --erasesize=$[1024*1024*4] --random 4MiB 3.52M/s 2MiB 2.93M/s 1MiB 1.38M/s 512KiB 843K/s 256KiB 474K/s ^C ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*4] --random 4MiB 7.25M/s 2MiB 7.38M/s 1MiB 7.67M/s 512KiB 2.44M/s 256KiB 1.13M/s 128KiB 2.06M/s 64KiB 1.2M/s 32KiB 597K/s 16KiB 301K/s 8KiB 1.32M/s 4KiB 801K/s 2KiB 439K/s -> ok, would say this card is not for random access ./flashbench /dev/sda -f --random --erasesize=$[4*1024*1024] --fat-nr=12 4MiB 3.74M/s 4.09M/s 3.37M/s 4.5M/s 4.1M/s 4.63M/s 4.63M/s 4.55M/s 4.63M/s 4.63M/s 4.69M/s 4.58M/s 2MiB 4.32M/s 4.99M/s 4.2M/s 4.14M/s 3.93M/s 4.27M/s 4.32M/s 4.32M/s 4.32M/s 4.32M/s 4.32M/s 4.3M/s 1MiB 4.34M/s 4.69M/s 4.09M/s 4.13M/s 3.86M/s 4.27M/s 4.27M/s 4.27M/s 4.28M/s 4.25M/s 4.27M/s 4.25M/s 512KiB 4.19M/s 4.33M/s 3.87M/s 3.95M/s 3.84M/s 3.94M/s 3.97M/s 3.83M/s 3.95M/s 3.95M/s 3.95M/s 3.95M/s 256KiB 1.63M/s 1.77M/s 1.55M/s 1.53M/s 1.52M/s 1.53M/s 1.53M/s 1.52M/s 1.53M/s 1.52M/s 1.52M/s 1.53M/s 128KiB 1.95M/s 2.25M/s 1.86M/s 2.13M/s 2.04M/s 2.14M/s 2.17M/s 2.17M/s 2.15M/s 2.17M/s 2.16M/s 2.16M/s 64KiB 1.21M/s 1.39M/s 1.16M/s 1.14M/s 1.14M/s 1.13M/s 1.14M/s 1.13M/s 1.14M/s 1.13M/s 1.13M/s 1.14M/s 32KiB 585K/s 738K/s 560K/s 582K/s 598K/s 589K/s 588K/s 588K/s 589K/s 588K/s 589K/s 589K/s 16KiB 301K/s 372K/s 294K/s 301K/s 302K/s 300K/s 300K/s 300K/s 300K/s 300K/s 300K/s 300K/s -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

SanDisk microSDHC class 4, 16 GB (for mobile phones)

by Peter Warasin

************************************************************** **** SanDisk microSDHC class 4, 16 GB (for mobile phones) **** ************************************************************** ==> /sys/block/mmcblk0/device/cid <== 0353445355313647807166662100b600 ==> /sys/block/mmcblk0/device/csd <== 400e00325b59000076b27f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800100000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 0353445355313647807166662100b600 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x71666621 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU16G ==> /sys/block/mmcblk0/device/date <== 06/2011 clock: 33000000 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) fdisk -ul /dev/sda Disk /dev/sda: 15.9 GB, 15931539456 bytes 255 heads, 63 sectors/track, 1936 cylinders, total 31116288 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 8192 31116287 15554048 c W95 FAT32 (LBA) ./flashbench -a /dev/sda3 --count=100 align 134217728 pre 2.07ms on 2.59ms post 1.75ms diff 681µs align 67108864 pre 2.08ms on 2.59ms post 1.79ms diff 660µs align 33554432 pre 2.09ms on 2.6ms post 1.81ms diff 647µs align 16777216 pre 2.09ms on 2.6ms post 1.81ms diff 654µs align 8388608 pre 2.09ms on 2.6ms post 1.82ms diff 647µs align 4194304 pre 2.06ms on 2.34ms post 1.83ms diff 391µs align 2097152 pre 1.84ms on 1.83ms post 1.83ms diff -3859ns align 1048576 pre 1.84ms on 1.82ms post 1.86ms diff -24890n align 524288 pre 1.84ms on 1.85ms post 1.85ms diff 2.91µs align 262144 pre 1.85ms on 1.85ms post 1.86ms diff 1.72µs align 131072 pre 1.83ms on 1.83ms post 1.82ms diff 3.73µs align 65536 pre 1.85ms on 1.84ms post 1.85ms diff -10755n align 32768 pre 1.82ms on 1.84ms post 1.84ms diff 8.97µs ./flashbench /dev/sda3 -O --open-au-nr=1 --erasesize=$[1024*1024*4] 4MiB 15.3M/s 2MiB 16M/s 1MiB 16.4M/s 512KiB 16.2M/s 256KiB 15.4M/s 128KiB 13.5M/s 64KiB 17.3M/s 32KiB 13.8M/s 16KiB 8.49M/s ./flashbench /dev/sda3 -O --open-au-nr=5 --erasesize=$[1024*1024*4] 4MiB 4.28M/s 2MiB 3.13M/s 1MiB 3.43M/s 512KiB 3.5M/s 256KiB 3.25M/s 128KiB 3.31M/s 64KiB 4.45M/s 32KiB 6.13M/s 16KiB 4.36M/s ./flashbench /dev/sda3 -O --open-au-nr=10 --erasesize=$[1024*1024*4] 4MiB 4M/s 2MiB 2.39M/s 1MiB 1.55M/s 512KiB 1.15M/s 256KiB 1.18M/s 128KiB 1.14M/s 64KiB 1.44M/s 32KiB 2.19M/s 16KiB 1.49M/s ./flashbench /dev/sda3 -O --open-au-nr=11 --erasesize=$[1024*1024*4] --blocksize=4096 4MiB 2.92M/s 2MiB 2.33M/s 1MiB 1.52M/s 512KiB 1.06M/s 256KiB 926K/s 128KiB 906K/s 64KiB 1.1M/s 32KiB 1.34M/s 16KiB 1.35M/s 8KiB 215K/s 4KiB 170K/s -> 10 blocks ./flashbench /dev/sda3 -O --open-au-nr=10 --erasesize=$[1024*1024*4] --blocksize=4096 --random 4MiB 3.76M/s 2MiB 2.27M/s 1MiB 1.6M/s 512KiB 967K/s 256KiB 508K/s 128KiB 256K/s 64KiB 151K/s 32KiB 84.3K/s 16KiB 46.4K/s 8KiB 456K/s 4KiB 875K/s ./flashbench /dev/sda3 -O --open-au-nr=5 --erasesize=$[1024*1024*4] --blocksize=4096 --random 4MiB 3.62M/s 2MiB 4.32M/s 1MiB 2.9M/s 512KiB 2.19M/s 256KiB 1.44M/s 128KiB 801K/s 64KiB 456K/s 32KiB 255K/s 16KiB 187K/s 8KiB 794K/s 4KiB 1.1M/s -> looks like bad random access but optimized for 4KiB blocks ./flashbench /dev/sda -f --erasesize=$[1024*1024*4] --blocksize=$[1024*4] --random --fat-nr=20 4MiB 1.83M/s 14.1M/s 2.32M/s 4.57M/s 4.48M/s 4.5M/s 4.49M/s 4.53M/s 4.49M/s 4.5M/s 4.44M/s 4.43M/s 4.49M/s 4.51M/s 4.49M/s 4.51M/s 4.51M/s 4.52M/s 4.45M/s 4.49M/s 2MiB 3.24M/s 12.7M/s 3.83M/s 4.62M/s 4.57M/s 2.12M/s 4.54M/s 4.58M/s 4.52M/s 4.57M/s 4.55M/s 4.56M/s 4.54M/s 4.54M/s 4.55M/s 4.55M/s 4.55M/s 4.57M/s 4.54M/s 4.46M/s 1MiB 4.53M/s 13.9M/s 4.42M/s 4.56M/s 4.56M/s 2.13M/s 4.58M/s 4.55M/s 4.56M/s 4.55M/s 4.56M/s 4.54M/s 4.6M/s 4.56M/s 4.59M/s 4.56M/s 4.58M/s 4.54M/s 4.51M/s 4.53M/s 512KiB 4.48M/s 10.8M/s 4.42M/s 4.45M/s 3.79M/s 1.94M/s 3.77M/s 3.85M/s 3.81M/s 3.78M/s 3.83M/s 3.81M/s 3.79M/s 3.81M/s 3.82M/s 3.87M/s 3.81M/s 3.86M/s 3.79M/s 3.84M/s 256KiB 3.57M/s 10.7M/s 3.56M/s 3.61M/s 3.38M/s 1.85M/s 3.43M/s 3.44M/s 3.39M/s 3.44M/s 3.42M/s 3.39M/s 3.43M/s 3.46M/s 3.4M/s 3.43M/s 3.4M/s 3.45M/s 3.42M/s 3.45M/s 128KiB 2.23M/s 10.3M/s 2.25M/s 2.28M/s 2.24M/s 1.43M/s 2.24M/s 2.26M/s 2.25M/s 2.25M/s 2.24M/s 2.24M/s 2.24M/s 2.26M/s 2.24M/s 2.26M/s 2.25M/s 2.26M/s 2.25M/s 2.26M/s 64KiB 1.38M/s 10.1M/s 1.38M/s 1.4M/s 1.32M/s 990K/s 1.32M/s 1.33M/s 1.31M/s 1.33M/s 1.31M/s 1.33M/s 1.33M/s 1.33M/s 1.32M/s 1.33M/s 1.32M/s 1.33M/s 1.31M/s 1.32M/s 32KiB 720K/s 7.74M/s 720K/s 729K/s 714K/s 610K/s 719K/s 726K/s 715K/s 726K/s 718K/s 725K/s 718K/s 725K/s 716K/s 724K/s 717K/s 727K/s 716K/s 725K/s 16KiB 344K/s 3.9M/s 345K/s 349K/s 344K/s 320K/s 344K/s 348K/s 343K/s 348K/s 344K/s 348K/s 341K/s 348K/s 344K/s 348K/s 343K/s 348K/s 343K/s 348K/s 8KiB 1.19M/s 2.13M/s 1.15M/s 1.21M/s 1.24M/s 948K/s 1.24M/s 1.24M/s 1.24M/s 1.24M/s 1.23M/s 1.25M/s 1.24M/s 1.26M/s 1.19M/s 1.24M/s 1.23M/s 1.25M/s 1.22M/s 1.22M/s -> ok, FAT is at 8MiB as expected (?) -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

Apacer microSDHC mobile series class 2, 16GB

by Peter Warasin

hi how stable is this card? is it a scsi harddisk? ;) ok, random is not that good ****************************************************** **** Apacer microSDHC mobile series class 2, 16GB **** ****************************************************** ==> /sys/block/mmcblk0/device/cid <== 03534453553136478070387aa500a200 ==> /sys/block/mmcblk0/device/csd <== 400e00325b59000076b27f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 03534453553136478070387aa500a200 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x70387aa5 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU16G ==> /sys/block/mmcblk0/device/date <== 02/2010 clock: 33000000 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) $ fdisk -lu /dev/sda Disk /dev/sda: 15.9 GB, 15931539456 bytes 128 heads, 32 sectors/track, 7596 cylinders, total 31116288 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 740µs on 740µs post 741µs diff -643ns align 67108864 pre 736µs on 737µs post 736µs diff 1.03µs align 33554432 pre 738µs on 742µs post 740µs diff 3.61µs align 16777216 pre 827µs on 816µs post 738µs diff 33.7µs align 8388608 pre 789µs on 810µs post 775µs diff 28.5µs align 4194304 pre 737µs on 738µs post 738µs diff 24ns align 2097152 pre 736µs on 737µs post 739µs diff -234ns align 1048576 pre 736µs on 734µs post 734µs diff -1177ns align 524288 pre 735µs on 735µs post 737µs diff -1214ns align 262144 pre 739µs on 735µs post 731µs diff -224ns align 131072 pre 737µs on 737µs post 738µs diff -650ns align 65536 pre 738µs on 736µs post 736µs diff -689ns align 32768 pre 735µs on 738µs post 732µs diff 4.52µs align 16384 pre 737µs on 738µs post 737µs diff 534ns align 8192 pre 736µs on 737µs post 736µs diff 1.38µs align 4096 pre 738µs on 732µs post 735µs diff -4358ns -> aeh? $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[8*1024*1024] 8MiB 1.48M/s 4MiB 3.23M/s 2MiB 3.63M/s 1MiB 3.69M/s 512KiB 3.65M/s 256KiB 3.62M/s 128KiB 3.5M/s 64KiB 3.87M/s 32KiB 3.44M/s 16KiB 3.1M/s 8KiB 2.15M/s 4KiB 1.4M/s 2KiB 813K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[8*1024*1024] 8MiB 3.65M/s 4MiB 3.63M/s 2MiB 3.67M/s 1MiB 3.7M/s 512KiB 3.69M/s 256KiB 3.64M/s 128KiB 3.51M/s 64KiB 3.88M/s 32KiB 3.45M/s 16KiB 3.12M/s 8KiB 2.17M/s 4KiB 1.41M/s 2KiB 805K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[8*1024*1024] 8MiB 3.73M/s 4MiB 3.67M/s 2MiB 3.73M/s 1MiB 3.76M/s 512KiB 3.73M/s 256KiB 3.73M/s 128KiB 3.56M/s 64KiB 3.97M/s 32KiB 3.54M/s 16KiB 3.16M/s 8KiB 2.19M/s 4KiB 1.4M/s 2KiB 811K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 4.75M/s 8MiB 5.48M/s 4MiB 5.44M/s 2MiB 5.38M/s 1MiB 5.48M/s 512KiB 5.38M/s 256KiB 5.36M/s 128KiB 5.02M/s 64KiB 5.97M/s 32KiB 4.93M/s 16KiB 4.32M/s 8KiB 2.6M/s 4KiB 1.62M/s 2KiB 905K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] --offset=$[2*1024*1024] 16MiB 6.04M/s 8MiB 4.57M/s 4MiB 5.31M/s 2MiB 5.3M/s 1MiB 5.38M/s 512KiB 5.32M/s 256KiB 5.24M/s 128KiB 4.94M/s 64KiB 5.85M/s 32KiB 4.86M/s 16KiB 4.29M/s 8KiB 2.57M/s 4KiB 1.62M/s 2KiB 912K/s ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] --offset=$[512] 16MiB 5.13M/s 8MiB 5.4M/s 4MiB 5.41M/s 2MiB 5.33M/s 1MiB 5.47M/s 512KiB 5.39M/s 256KiB 5.28M/s 128KiB 4.83M/s 64KiB 6.39M/s 32KiB 4.44M/s 16KiB 3.45M/s 8KiB 1.96M/s 4KiB 1.35M/s 2KiB 823K/s $ ./flashbench /dev/sda3 --open-au-nr=2 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.69M/s 8MiB 5.66M/s 4MiB 5.57M/s 2MiB 5.23M/s 1MiB 5.56M/s 512KiB 5.47M/s 256KiB 5.42M/s 128KiB 5.1M/s 64KiB 5.52M/s 32KiB 5.02M/s 16KiB 4.31M/s 8KiB 2.51M/s 4KiB 1.58M/s 2KiB 908K/s ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.94M/s 8MiB 4.92M/s 4MiB 4.33M/s 2MiB 4.54M/s 1MiB 5.98M/s 512KiB 5.95M/s 256KiB 5.94M/s 128KiB 5.53M/s 64KiB 5.92M/s 32KiB 5.42M/s 16KiB 4.65M/s 8KiB 2.67M/s 4KiB 1.67M/s 2KiB 917K/s $ ./flashbench /dev/sda3 --open-au-nr=10 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.79M/s 8MiB 5.28M/s 4MiB 4.25M/s 2MiB 3.05M/s 1MiB 2.04M/s 512KiB 1.02M/s 256KiB 515K/s freezes ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.5M/s 8MiB 5.06M/s 4MiB 4.29M/s 2MiB 3.1M/s 1MiB 2.08M/s 512KiB 1.03M/s 256KiB 518K/s ^C -> at least 5 blocks ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --erasesize=$[16*1024*1024] --random 16MiB 5.22M/s 8MiB 5.04M/s 4MiB 4.14M/s 2MiB 3.09M/s 1MiB 2.19M/s 512KiB 1.13M/s 256KiB 605K/s 128KiB 300K/s ^C ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] --random 16MiB 4.65M/s 8MiB 4.69M/s 4MiB 4.65M/s 2MiB 4.71M/s 1MiB 3.66M/s 512KiB 1.75M/s 256KiB 1.28M/s 128KiB 819K/s 64KiB 542K/s 32KiB 262K/s 16KiB 127K/s 8KiB 64.4K/s -> quite slow on small blocks -> assuming 8GiB erase-size (?) $ ./flashbench /dev/sda3 -f --erasesize=$[8*1024*1024] --blocksize=2048 8MiB 5.81M/s 6.2M/s 6.64M/s 6.8M/s 6.18M/s 4.83M/s 4MiB 5.77M/s 6.49M/s 6.39M/s 6.69M/s 6.51M/s 4.68M/s 2MiB 5.68M/s 6.45M/s 6.53M/s 6.52M/s 6.48M/s 4.8M/s 1MiB 5.9M/s 6.55M/s 6.61M/s 6.74M/s 6.6M/s 4.85M/s 512KiB 5.77M/s 6.55M/s 6.52M/s 6.58M/s 6.6M/s 4.81M/s 256KiB 5.72M/s 6.49M/s 6.46M/s 6.45M/s 6.52M/s 4.77M/s 128KiB 5.3M/s 6.04M/s 6M/s 5.97M/s 6M/s 4.51M/s 64KiB 6.51M/s 7.3M/s 7.37M/s 7.5M/s 7.37M/s 5.2M/s 32KiB 5.32M/s 5.98M/s 5.92M/s 5.9M/s 6M/s 4.45M/s 16KiB 4.54M/s 5.1M/s 5.04M/s 4.94M/s 5M/s 3.84M/s 8KiB 2.67M/s 2.8M/s 2.83M/s 2.84M/s 2.88M/s 2.48M/s 4KiB 1.67M/s 1.74M/s 1.73M/s 1.73M/s 1.74M/s 1.57M/s 2KiB 934K/s 956K/s 958K/s 953K/s 954K/s 884K/s peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

Emtec microSDHC class 4, 4GB

by Peter Warasin

hi guys this card seems quite unqualified ************************************** **** Emtec microSDHC class 4, 4GB **** ************************************** ==> /sys/block/mmcblk0/device/cid <== 02544d534130344706142c312600b300 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d6f7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800001000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x6 ==> /sys/block/mmcblk0/device/hwrev <== 0x0 ==> /sys/block/mmcblk0/device/cid <== 02544d534130344706142c312600b300 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /sys/block/mmcblk0/device/serial <== 0x142c3126 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SA04G ==> /sys/block/mmcblk0/device/date <== 03/2011 clock: 33000000 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) $ fdisk -lu /dev/sda Disk /dev/sda: 3951 MB, 3951034368 bytes 128 heads, 32 sectors/track, 1884 cylinders, total 7716864 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 894µs on 1.44ms post 1.26ms diff 362µs align 67108864 pre 919µs on 1.47ms post 1.3ms diff 358µs align 33554432 pre 894µs on 1.44ms post 1.25ms diff 362µs align 16777216 pre 880µs on 1.38ms post 1.24ms diff 326µs align 8388608 pre 872µs on 1.38ms post 1.23ms diff 329µs align 4194304 pre 880µs on 1.38ms post 1.23ms diff 326µs align 2097152 pre 1.13ms on 1.13ms post 1.12ms diff 1.58µs align 1048576 pre 1.01ms on 984µs post 982µs diff -12970n align 524288 pre 1.16ms on 1.12ms post 1.11ms diff -16689n align 262144 pre 1.02ms on 986µs post 984µs diff -18236n align 131072 pre 1.13ms on 1.12ms post 1.11ms diff -2203ns align 65536 pre 1.06ms on 987µs post 979µs diff -31308n align 32768 pre 1.13ms on 1.13ms post 1.11ms diff 3.15µs align 16384 pre 1.03ms on 986µs post 980µs diff -21555n align 8192 pre 1.12ms on 1.11ms post 1.11ms diff -8334ns align 4096 pre 1.23ms on 1.19ms post 1.18ms diff -11449n -> 4MiB eraseblock $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 4MiB 6.62M/s 2MiB 4.95M/s 1MiB 4.99M/s 512KiB 4.94M/s 256KiB 4.88M/s 128KiB 4.64M/s 64KiB 6M/s 32KiB 4.61M/s 16KiB 3.91M/s 8KiB 3.15M/s 4KiB 2.4M/s 2KiB 25.3K/s $ ./flashbench /dev/sda3 --open-au-nr=2 -O --blocksize=2048 4MiB 5.68M/s 2MiB 3.05M/s 1MiB 1.56M/s 512KiB 797K/s 256KiB 404K/s 128KiB 205K/s 64KiB 103K/s 32KiB 51.6K/s freezing -> 1 block $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --random 4MiB 3.33M/s 2MiB 3.3M/s 1MiB 3M/s 512KiB 1.2M/s 256KiB 671K/s 128KiB 310K/s 64KiB 150K/s 32KiB 81.9K/s 16KiB 40.5K/s 8KiB 20.6K/s ^C -> unqualified for random access $ ./flashbench /dev/sda3 -f --erasesize=$[4*1024*1024] 4MiB 3.31M/s 5.06M/s 5.02M/s 5.01M/s 4.93M/s 5M/s 2MiB 4.96M/s 5.04M/s 4.98M/s 5.01M/s 5.02M/s 5.04M/s 1MiB 4.99M/s 5.01M/s 4.98M/s 5.01M/s 5.01M/s 5.02M/s 512KiB 4.99M/s 5.06M/s 5.04M/s 4.96M/s 4.97M/s 4.95M/s 256KiB 4.85M/s 5.01M/s 4.98M/s 5M/s 5.03M/s 5.05M/s 128KiB 4.66M/s 4.84M/s 4.87M/s 4.88M/s 4.93M/s 4.88M/s 64KiB 6M/s 5.47M/s 5.43M/s 5.11M/s 5.35M/s 5.38M/s 32KiB 4.59M/s 5.27M/s 5.23M/s 5.29M/s 5.2M/s 5.21M/s 16KiB 3.87M/s 4.29M/s 4.3M/s 4.24M/s 4.29M/s 4.3M/s what can i say with these? peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

Lexar mobile microSDHC class 6, 16 GB

by Peter Warasin

Hi guys also a good card looks like same manfid and controller like the first filemate card in your list *********************************************** **** Lexar mobile microSDHC class 6, 16 GB **** *********************************************** ==> /sys/block/mmcblk0/device/cid <== 2842454c455841521029101ade00ac00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b590000774d7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/cid <== 2842454c455841521029101ade00ac00 ==> /sys/block/mmcblk0/device/manfid <== 0x000028 ==> /sys/block/mmcblk0/device/oemid <== 0x4245 ==> /sys/block/mmcblk0/device/serial <== 0x29101ade ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== LEXAR ==> /sys/block/mmcblk0/device/date <== 12/2010 clock: 33000000 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) $ fdisk -lu /dev/sda Disk /dev/sda: 16.0 GB, 16012804096 bytes 128 heads, 32 sectors/track, 7635 cylinders, total 31275008 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 722µs on 853µs post 722µs diff 131µs align 67108864 pre 724µs on 857µs post 724µs diff 133µs align 33554432 pre 726µs on 853µs post 724µs diff 128µs align 16777216 pre 724µs on 853µs post 721µs diff 131µs align 8388608 pre 721µs on 845µs post 717µs diff 126µs align 4194304 pre 722µs on 726µs post 722µs diff 3.42µs align 2097152 pre 726µs on 726µs post 724µs diff 1.07µs align 1048576 pre 725µs on 728µs post 728µs diff 2.17µs align 524288 pre 729µs on 729µs post 729µs diff -275ns align 262144 pre 727µs on 728µs post 727µs diff 541ns align 131072 pre 723µs on 725µs post 727µs diff 542ns align 65536 pre 722µs on 720µs post 721µs diff -1576ns align 32768 pre 728µs on 726µs post 727µs diff -1480ns align 16384 pre 719µs on 721µs post 713µs diff 5.35µs align 8192 pre 724µs on 730µs post 729µs diff 3.25µs align 4096 pre 727µs on 727µs post 731µs diff -1882ns -> 8MiB erase-block size $ ./flashbench --open-au --open-au-nr=1 --erasesize=$[16*1024*1024] --blocksize=$[1024*1024] /dev/sda3 16MiB 8.99M/s 8MiB 14.5M/s 4MiB 15M/s 2MiB 15.1M/s 1MiB 16M/s -> ok, definitively 8MiB erase-block size $ ./flashbench --open-au --open-au-nr=1 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.6M/s 4MiB 14.6M/s 2MiB 14.8M/s 1MiB 15.7M/s 512KiB 15M/s 256KiB 15.4M/s 128KiB 14.6M/s 64KiB 15.7M/s 32KiB 10.5M/s 16KiB 7.05M/s 8KiB 4.25M/s 4KiB 2.42M/s 2KiB 1.38M/s $ ./flashbench --open-au --open-au-nr=3 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.7M/s 4MiB 10.2M/s 2MiB 14.8M/s 1MiB 15.6M/s 512KiB 15.4M/s 256KiB 15.4M/s 128KiB 14.7M/s 64KiB 13.5M/s 32KiB 10.6M/s 16KiB 7.16M/s 8KiB 4.31M/s 4KiB 2.22M/s 2KiB 1.12M/s $ ./flashbench --open-au --open-au-nr=5 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.7M/s 4MiB 9.31M/s 2MiB 14.9M/s 1MiB 15.5M/s 512KiB 15.7M/s 256KiB 15.1M/s 128KiB 14.7M/s 64KiB 13.6M/s 32KiB 10.7M/s 16KiB 7.17M/s 8KiB 4.34M/s 4KiB 2.21M/s 2KiB 1.14M/s $ ./flashbench --open-au --open-au-nr=6 --erasesize=$[8*1024*1024] --blocksize=$[1024*1024] /dev/sda3 8MiB 14.8M/s 4MiB 4.07M/s 2MiB 2.34M/s 1MiB 1.28M/s -> can handle 5 blocks concurrently $ ./flashbench --open-au --open-au-nr=10 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.8M/s 4MiB 4.91M/s 2MiB 2.33M/s 1MiB 1.28M/s 512KiB 671K/s ^C $ ./flashbench --open-au --open-au-nr=20 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 13.7M/s 4MiB 4.11M/s ^C $ ./flashbench --open-au --open-au-nr=40 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 14.3M/s 4MiB 4M/s ^C $ ./flashbench --open-au --open-au-nr=100 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 13.6M/s ^C $ ./flashbench --open-au --open-au-nr=300 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 14.7M/s ^C -> is this some sort of caching? $ ./flashbench --open-au --open-au-nr=5 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 --random 8MiB 13.3M/s 4MiB 13.3M/s 2MiB 13.4M/s 1MiB 13.7M/s 512KiB 12.6M/s 256KiB 11.9M/s 128KiB 10.6M/s 64KiB 11.3M/s 32KiB 8.21M/s 16KiB 5.16M/s 8KiB 2.92M/s 4KiB 1.2M/s 2KiB 588K/s -> still good $ ./flashbench --open-au --open-au-nr=5 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 --random --offset=$[4*1024*1024] 8MiB 2.93M/s 4MiB 4.35M/s 2MiB 2.35M/s 1MiB 1.67M/s 512KiB 1.05M/s 256KiB 656K/s 128KiB 340K/s 64KiB 168K/s ^C -> unaligned: crap peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

Lexar mobile microSDHC class 4, 8 GB

by Peter Warasin

hi guys seems same as class6, 16GB but it is freezing. makes the card unusable? ********************************************** **** Lexar mobile microSDHC class 4, 8 GB **** ********************************************** ==> /sys/block/mmcblk0/device/cid <== 2842454c4558415210be0131b600b500 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003bad7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/cid <== 2842454c4558415210be0131b600b500 ==> /sys/block/mmcblk0/device/manfid <== 0x000028 ==> /sys/block/mmcblk0/device/oemid <== 0x4245 ==> /sys/block/mmcblk0/device/serial <== 0xbe0131b6 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== LEXAR ==> /sys/block/mmcblk0/device/date <== 05/2011 clock: 33000000 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) $ fdisk -lu /dev/sda Disk /dev/sda: 8010 MB, 8010072064 bytes 128 heads, 32 sectors/track, 3819 cylinders, total 15644672 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 738µs on 968µs post 863µs diff 168µs align 67108864 pre 742µs on 973µs post 868µs diff 168µs align 33554432 pre 737µs on 970µs post 864µs diff 170µs align 16777216 pre 741µs on 974µs post 859µs diff 174µs align 8388608 pre 742µs on 973µs post 863µs diff 171µs align 4194304 pre 738µs on 975µs post 868µs diff 172µs align 2097152 pre 743µs on 855µs post 852µs diff 57.2µs align 1048576 pre 741µs on 854µs post 867µs diff 49.7µs align 524288 pre 739µs on 864µs post 867µs diff 60.4µs align 262144 pre 738µs on 866µs post 867µs diff 63.4µs align 131072 pre 737µs on 863µs post 868µs diff 60.9µs align 65536 pre 733µs on 882µs post 869µs diff 81.6µs align 32768 pre 730µs on 870µs post 865µs diff 73µs align 16384 pre 737µs on 886µs post 869µs diff 83µs align 8192 pre 734µs on 872µs post 868µs diff 70.4µs align 4096 pre 733µs on 872µs post 864µs diff 73.4µs -> 4MiB erase-block $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 4MiB 11.1M/s 2MiB 11.1M/s 1MiB 11.4M/s 512KiB 10.5M/s 256KiB 11M/s 128KiB 10.9M/s 64KiB 11.5M/s 32KiB 9.48M/s 16KiB 7.71M/s 8KiB 4.66M/s 4KiB 2.54M/s 2KiB 1.47M/s $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 4MiB 11.1M/s 2MiB 5.86M/s 1MiB 11.1M/s 512KiB 11.3M/s 256KiB 11.2M/s 128KiB 10.6M/s 64KiB 10.9M/s 32KiB 9.4M/s 16KiB 7.54M/s 8KiB 4.57M/s 4KiB 2.34M/s 2KiB 1.19M/s $ ./flashbench /dev/sda3 --open-au-nr=10 -O --blocksize=2048 4MiB 9.56M/s 2MiB 3.2M/s 1MiB 1.8M/s 512KiB 986K/s 256KiB 516K/s 128KiB 252K/s freezing, also 2nd time (!!!) $ ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 4MiB 7.93M/s 2MiB 3.27M/s 1MiB 1.8M/s 512KiB 988K/s 256KiB 517K/s 128KiB 264K/s 64KiB 137K/s 32KiB 68.7K/s freezes (!!!) -> can handle 5 blocks -> what fishy is going on that it freezes with more? -> is this card useful at all if it behaves like this? $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 4MiB 10.1M/s 2MiB 10.4M/s 1MiB 10.5M/s 512KiB 10.3M/s 256KiB 10.1M/s 128KiB 9.51M/s 64KiB 9.54M/s 32KiB 7.66M/s 16KiB 5.48M/s 8KiB 3.17M/s 4KiB 1.64M/s 2KiB 901K/s $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random 4MiB 10.7M/s 2MiB 10.5M/s 1MiB 10.5M/s 512KiB 10.2M/s 256KiB 9.75M/s 128KiB 9.67M/s 64KiB 9.54M/s 32KiB 7.59M/s 16KiB 5.5M/s 8KiB 3.19M/s 4KiB 1.25M/s 2KiB 613K/s -> random is also good, same cutoff peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

IPPBX for Local Distributors

by Alex Hua

14 years, 10 months

Lexar mobile microSDHC class 6, 8GB

by Peter Warasin

Hi Guys I *think* this card is not that bad. ********************************************** **** Lexar mobile microSDHC class 6, 8 GB **** ********************************************** ==> /sys/block/mmcblk0/device/cid <== 0941502020202020102180020900b400 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003bad7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/cid <== 0941502020202020102180020900b400 ==> /sys/block/mmcblk0/device/manfid <== 0x000009 ==> /sys/block/mmcblk0/device/oemid <== 0x4150 ==> /sys/block/mmcblk0/device/serial <== 0x21800209 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== ==> /sys/block/mmcblk0/device/date <== 04/2011 clock: 33000000 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) ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 744µs on 982µs post 863µs diff 178µs align 67108864 pre 744µs on 981µs post 861µs diff 178µs align 33554432 pre 743µs on 967µs post 862µs diff 165µs align 16777216 pre 742µs on 970µs post 866µs diff 166µs align 8388608 pre 744µs on 974µs post 862µs diff 171µs align 4194304 pre 746µs on 961µs post 865µs diff 156µs align 2097152 pre 744µs on 855µs post 863µs diff 51.3µs align 1048576 pre 744µs on 854µs post 867µs diff 48.1µs align 524288 pre 743µs on 855µs post 868µs diff 50.1µs align 262144 pre 744µs on 855µs post 867µs diff 49.6µs align 131072 pre 744µs on 862µs post 865µs diff 57.1µs align 65536 pre 745µs on 867µs post 860µs diff 64.9µs align 32768 pre 744µs on 870µs post 867µs diff 64.3µs align 16384 pre 743µs on 868µs post 863µs diff 64.5µs align 8192 pre 742µs on 868µs post 864µs diff 64.8µs align 4096 pre 744µs on 865µs post 867µs diff 59.3µs -> 4MiB erase block ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 4MiB 8.69M/s 2MiB 5.31M/s 1MiB 11M/s 512KiB 11M/s 256KiB 10.8M/s 128KiB 10.5M/s 64KiB 10.4M/s 32KiB 9.19M/s 16KiB 7.25M/s 8KiB 4.43M/s 4KiB 2.26M/s 2KiB 1.16M/s ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 4MiB 8.78M/s 2MiB 3.95M/s 1MiB 1.71M/s 512KiB 969K/s 256KiB 487K/s -> deals well with 5 blocks ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random 4MiB 8.09M/s 2MiB 8.24M/s 1MiB 10.1M/s 512KiB 9.9M/s 256KiB 9.34M/s 128KiB 8.49M/s 64KiB 9.02M/s 32KiB 7.27M/s 16KiB 5.2M/s 8KiB 3.02M/s 4KiB 1.19M/s 2KiB 582K/s ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random 4MiB 10.2M/s 2MiB 9.95M/s 1MiB 10.1M/s 512KiB 9.89M/s 256KiB 9.7M/s 128KiB 9.3M/s 64KiB 9.07M/s 32KiB 7.31M/s 16KiB 5.21M/s 8KiB 3.02M/s 4KiB 1.2M/s 2KiB 584K/s -> looks quite fair enough also on random access ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random --offset=$[123 * 512] 4MiB 4.49M/s 2MiB 2.28M/s 1MiB 2.27M/s 512KiB 2.23M/s 256KiB 2.19M/s 128KiB 2.13M/s 64KiB 2.1M/s 32KiB 1.34M/s 16KiB 756K/s 8KiB 398K/s 4KiB 206K/s -> unaligned quite slow peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

mobile ultra microSDHC class 4, 8GB

by Peter Warasin

Hi guys ****************************************************** **** SanDisk mobile ultra microSDHC class 4, 8 GB **** ****************************************************** ==> /sys/block/mmcblk0/device/cid <== 0353445355303847800c2dc23b00ac00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b377f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800100000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 0353445355303847800c2dc23b00ac00 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x0c2dc23b ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU08G ==> /sys/block/mmcblk0/device/date <== 12/2010 clock: 33000000 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) $ ./flashbench -a /dev/sda3 --count=100 align 134217728 pre 1.86ms on 2.23ms post 1.82ms diff 388µs align 67108864 pre 1.86ms on 2.23ms post 1.82ms diff 388µs align 33554432 pre 1.86ms on 2.23ms post 1.83ms diff 387µs align 16777216 pre 1.86ms on 2.23ms post 1.83ms diff 385µs align 8388608 pre 1.86ms on 2.24ms post 1.83ms diff 389µs align 4194304 pre 1.87ms on 1.98ms post 1.87ms diff 113µs align 2097152 pre 1.87ms on 1.87ms post 1.87ms diff -3574ns align 1048576 pre 1.87ms on 1.86ms post 1.87ms diff -4139ns align 524288 pre 1.87ms on 1.87ms post 1.87ms diff -414ns align 262144 pre 1.86ms on 1.87ms post 1.86ms diff 4.4µs align 131072 pre 1.86ms on 1.87ms post 1.87ms diff 2.04µs align 65536 pre 1.87ms on 1.86ms post 1.87ms diff -2116ns align 32768 pre 1.87ms on 1.87ms post 1.87ms diff 3.03µs -> erase-block size 4MiB ./flashbench --open-au --open-au-nr=1 --blocksize=2048 /dev/sda3 4MiB 6.56M/s 2MiB 6.06M/s 1MiB 11.1M/s 512KiB 12M/s 256KiB 11.7M/s 128KiB 10.7M/s 64KiB 17.2M/s 32KiB 13.1M/s 16KiB 9.51M/s 8KiB 3.2M/s 4KiB 1.79M/s 2KiB 975K/s ./flashbench --open-au --open-au-nr=2 --blocksize=2048 /dev/sda3 4MiB 10.9M/s 2MiB 10.6M/s 1MiB 11.2M/s 512KiB 11.9M/s 256KiB 12M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 12.9M/s 16KiB 8.77M/s 8KiB 3.16M/s 4KiB 1.8M/s 2KiB 970K/s ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 4MiB 6.89M/s 2MiB 10.7M/s 1MiB 11.3M/s 512KiB 11.9M/s 256KiB 12.1M/s 128KiB 11.1M/s 64KiB 14M/s 32KiB 12.6M/s 16KiB 9.26M/s 8KiB 3.16M/s 4KiB 1.78M/s 2KiB 857K/s ./flashbench --open-au --open-au-nr=4 --blocksize=2048 /dev/sda3 4MiB 6.86M/s 2MiB 4.83M/s 1MiB 4.03M/s 512KiB 4.16M/s 256KiB 4.04M/s 128KiB 4.13M/s 64KiB 5.44M/s 32KiB 5.03M/s 16KiB 4.42M/s 8KiB 2.31M/s 4KiB 1.45M/s 2KiB 873K/s ./flashbench --open-au --open-au-nr=5 --blocksize=2048 /dev/sda3 4MiB 6.39M/s 2MiB 3.08M/s 1MiB 2.24M/s 512KiB 2.62M/s 256KiB 2.37M/s 128KiB 2.35M/s 64KiB 2.9M/s 32KiB 3.79M/s 16KiB 2.9M/s 8KiB 1.97M/s 4KiB 1.24M/s 2KiB 775K/s ./flashbench --open-au --open-au-nr=6 --blocksize=2048 /dev/sda3 4MiB 3.96M/s 2MiB 2.79M/s 1MiB 1.74M/s 512KiB 1.59M/s 256KiB 1.54M/s 128KiB 1.55M/s 64KiB 211K/s 32KiB 2.21M/s 16KiB 2.36M/s 8KiB 1.69M/s 4KiB 1.28M/s 2KiB 697K/s -> can deal with 3 open erase blocks $ ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 --random 4MiB 3.72M/s 2MiB 3.27M/s 1MiB 11.1M/s 512KiB 2.72M/s 256KiB 1.18M/s 128KiB 2.2M/s 64KiB 1.25M/s 32KiB 609K/s 16KiB 389K/s 8KiB 1.31M/s 4KiB 809K/s 2KiB 416K/s ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 --random 4MiB 10.9M/s 2MiB 10.8M/s 1MiB 11.3M/s 512KiB 2.72M/s 256KiB 1.18M/s 128KiB 2.25M/s 64KiB 1.25M/s 32KiB 608K/s 16KiB 389K/s 8KiB 1.32M/s 4KiB 810K/s 2KiB 419K/s ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 --random 4MiB 10.9M/s 2MiB 10.6M/s 1MiB 11.3M/s 512KiB 2.71M/s 256KiB 1.18M/s 128KiB 2.25M/s 64KiB 1.25M/s 32KiB 604K/s 16KiB 389K/s 8KiB 1.33M/s 4KiB 811K/s 2KiB 418K/s -> seems quite stable for --random.. was the GC maybe running on first try? peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 10 months

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