Flashbench-results

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Samsung 4GB Class 4 microSD part number MB-MS4GA

by Andrew Bradford

Sorry if my previous few emails to the list came through with a www at the beginning of my domain. There were some DNS issues, they have been fixed. This was an interesting card. I'm not exactly sure what to make of the results. # BeagleBoard-xM is my only home computer with a built-in MMC device: root@192:~/flashbench# head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 1b534d30303030301010a306a500bb51 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d9b7f800a40003b ==> /sys/block/mmcblk0/device/date <== 11/2011 ==> /sys/block/mmcblk0/device/driver <== ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/manfid <== 0x00001b ==> /sys/block/mmcblk0/device/name <== 00000 ==> /sys/block/mmcblk0/device/oemid <== 0x534d ==> /sys/block/mmcblk0/device/power <== ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/serial <== 0x10a306a5 ==> /sys/block/mmcblk0/device/subsystem <== ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=00000 MODALIAS=mmc:block # All further tests done using Transcend USB2.0 reader on my desktop andrew@bigbox:~/flashbench$ sudo sfdisk -uS -l /dev/sdc Disk /dev/sdc: 1895 cylinders, 128 heads, 32 sectors/track Units = sectors of 512 bytes, counting from 0 Device Boot Start End #sectors Id System /dev/sdc1 * 8192 7761919 7753728 c W95 FAT32 (LBA) /dev/sdc2 0 - 0 0 Empty /dev/sdc3 0 - 0 0 Empty /dev/sdc4 0 - 0 0 Empty andrew@bigbox:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 1073741824 pre 1.3ms on 1.72ms post 1.41ms diff 366µs align 536870912 pre 1.31ms on 1.69ms post 1.41ms diff 336µs align 268435456 pre 1.29ms on 1.68ms post 1.42ms diff 325µs align 134217728 pre 1.19ms on 1.54ms post 1.33ms diff 274µs align 67108864 pre 1.19ms on 1.55ms post 1.32ms diff 292µs align 33554432 pre 1.18ms on 1.54ms post 1.32ms diff 286µs align 16777216 pre 1.19ms on 1.57ms post 1.32ms diff 312µs align 8388608 pre 1.21ms on 1.62ms post 1.37ms diff 331µs align 4194304 pre 1.16ms on 1.5ms post 1.31ms diff 268µs align 2097152 pre 1.18ms on 1.54ms post 1.35ms diff 277µs align 1048576 pre 1.16ms on 1.54ms post 1.32ms diff 301µs align 524288 pre 1.19ms on 1.36ms post 1.33ms diff 97µs align 262144 pre 1.19ms on 1.32ms post 1.33ms diff 58.9µs align 131072 pre 1.18ms on 1.39ms post 1.37ms diff 109µs align 65536 pre 1.2ms on 1.34ms post 1.33ms diff 78.7µs align 32768 pre 1.19ms on 1.35ms post 1.33ms diff 88.7µs align 16384 pre 1.17ms on 1.31ms post 1.3ms diff 76.4µs align 8192 pre 1.18ms on 1.3ms post 1.3ms diff 60.5µs align 4096 pre 1.24ms on 1.24ms post 1.22ms diff 6.35µs align 2048 pre 1.28ms on 1.28ms post 1.27ms diff 7.22µs # 1MiB erase block? # 8KiB page size andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[1*1024*1024] --blocksize=$[4*1024] --open-au-nr=1 1MiB 3.08M/s 512KiB 1.88M/s 256KiB 1.91M/s 128KiB 1.98M/s 64KiB 1.88M/s 32KiB 1.95M/s 16KiB 1.93M/s 8KiB 1.94M/s 4KiB 1.72M/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=1 2MiB 4.44M/s 1MiB 4.14M/s 512KiB 4.43M/s 256KiB 4.32M/s 128KiB 4.42M/s 64KiB 4.16M/s 32KiB 4.42M/s 16KiB 4.36M/s 8KiB 4.35M/s 4KiB 3.64M/s # Makes me think 2MiB erase block is accurate, bumping to --erasesize=$[4*1024*1024] has no effect. andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=2 2MiB 3.99M/s 1MiB 4.34M/s 512KiB 4.23M/s 256KiB 4.25M/s 128KiB 3.93M/s 64KiB 3.78M/s 32KiB 3.31M/s 16KiB 2.14M/s 8KiB 2.11M/s 4KiB 995K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=3 2MiB 3.55M/s 1MiB 2.26M/s 512KiB 2.04M/s 256KiB 1.29M/s 128KiB 247K/s 64KiB 1.04M/s 32KiB 955K/s 16KiB 2.04M/s 8KiB 1.69M/s 4KiB 602K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=4 2MiB 3.8M/s 1MiB 2.3M/s 512KiB 894K/s 256KiB 447K/s 128KiB 221K/s 64KiB 112K/s 32KiB 205K/s 16KiB 1.27M/s 8KiB 1.15M/s 4KiB 652K/s # 1 open-au is good, 2 open-au is OK, 3 open-au is falling off fast. # In 3 and 4 open-au, I'm not sure why the slowdown at 32KiB and then the speed-up at 16KiB. Caching in the controller? andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --random --open-au-nr=1 2MiB 7.63M/s 1MiB 2.36M/s 512KiB 2.09M/s 256KiB 737K/s 128KiB 396K/s 64KiB 189K/s 32KiB 126K/s 16KiB 1.23M/s 8KiB 1.28M/s 4KiB 776K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$*1024*1024] --blocksize=$[4*1024] --random --open-au-nr=2 2MiB 3.82M/s 1MiB 2.36M/s 512KiB 2.13M/s 256KiB 666K/s 128KiB 399K/s 64KiB 188K/s 32KiB 132K/s 16KiB 2.45M/s 8KiB 2.12M/s 4KiB 869K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --random --open-au-nr=3 2MiB 4.11M/s 1MiB 2.19M/s 512KiB 1.59M/s 256KiB 605K/s 128KiB 288K/s 64KiB 158K/s 32KiB 121K/s 16KiB 1.99M/s 8KiB 1.12M/s 4KiB 708K/s

13 years, 2 months

Amazon Basics 4GB Class 10 microSD part number: B0058GH3II

by Andrew Bradford

# BeagleBoard-xM is my only home computer with a built-in MMC device: root@192:~# head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 2750485344303447300119bad200ba7d ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001da77f800a40002d ==> /sys/block/mmcblk0/device/date <== 10/2011 ==> /sys/block/mmcblk0/device/driver <== ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x3 ==> /sys/block/mmcblk0/device/manfid <== 0x000027 ==> /sys/block/mmcblk0/device/name <== SD04G ==> /sys/block/mmcblk0/device/oemid <== 0x5048 ==> /sys/block/mmcblk0/device/power <== ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800001000000 ==> /sys/block/mmcblk0/device/serial <== 0x0119bad2 ==> /sys/block/mmcblk0/device/subsystem <== ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD04G MODALIAS=mmc:block # All further tests done using Transcend USB2.0 reader on my desktop andrew@bigbox:~/flashbench$ sudo sfdisk -uS -l /dev/sdc Disk /dev/sdc: 1898 cylinders, 128 heads, 32 sectors/track Units = sectors of 512 bytes, counting from 0 Device Boot Start End #sectors Id System /dev/sdc1 * 8192 7774207 7766016 c W95 FAT32 (LBA) /dev/sdc2 0 - 0 0 Empty /dev/sdc3 0 - 0 0 Empty /dev/sdc4 0 - 0 0 Empty andrew@bigbox:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 1073741824 pre 2.1ms on 2.56ms post 2.07ms diff 475µs align 536870912 pre 1.96ms on 2.44ms post 1.97ms diff 479µs align 268435456 pre 2.01ms on 2.49ms post 2.01ms diff 482µs align 134217728 pre 2.09ms on 2.59ms post 2.03ms diff 529µs align 67108864 pre 2.05ms on 2.56ms post 1.99ms diff 536µs align 33554432 pre 2ms on 2.47ms post 2ms diff 465µs align 16777216 pre 2.02ms on 2.51ms post 2ms diff 502µs align 8388608 pre 2.03ms on 2.58ms post 2.02ms diff 552µs align 4194304 pre 1.93ms on 2.47ms post 1.99ms diff 508µs align 2097152 pre 1.94ms on 2.43ms post 1.96ms diff 484µs align 1048576 pre 1.96ms on 2.04ms post 1.94ms diff 89µs align 524288 pre 1.96ms on 2.01ms post 1.94ms diff 61.5µs align 262144 pre 1.94ms on 1.96ms post 1.93ms diff 24.4µs align 131072 pre 1.97ms on 2.03ms post 1.96ms diff 60.4µs align 65536 pre 1.95ms on 1.97ms post 1.93ms diff 28.7µs align 32768 pre 1.96ms on 2.03ms post 1.95ms diff 72.2µs align 16384 pre 1.94ms on 2.02ms post 1.94ms diff 79.1µs align 8192 pre 1.95ms on 2.04ms post 1.95ms diff 89.8µs align 4096 pre 1.94ms on 1.98ms post 1.95ms diff 37.2µs align 2048 pre 1.98ms on 2.01ms post 1.96ms diff 39µs # 2MiB erase block # 8KiB pages andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=1 2MiB 12.9M/s 1MiB 12.6M/s 512KiB 12.2M/s 256KiB 11.7M/s 128KiB 12.3M/s 64KiB 12.5M/s 32KiB 12.3M/s 16KiB 12.3M/s 8KiB 9.98M/s 4KiB 6.36M/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=2 2MiB 12.7M/s 1MiB 4.84M/s 512KiB 1.79M/s 256KiB 815K/s 128KiB 393K/s 64KiB 194K/s 32KiB 96.3K/s 16KiB 48.4K/s 8KiB 24.1K/s 4KiB 12K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=1 --random 2MiB 6.24M/s 1MiB 5.79M/s 512KiB 4.82M/s 256KiB 1.41M/s 128KiB 713K/s 64KiB 312K/s 32KiB 147K/s 16KiB 79.4K/s 8KiB 39.1K/s 4KiB 182K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$*1024*1024] --blocksize=$[4*1024] --open-au-nr=2 --random 2MiB 5.44M/s 1MiB 4.26M/s 512KiB 1.72M/s 256KiB 798K/s 128KiB 386K/s 64KiB 191K/s time_write: Input/output error 32KiB 96.7K/s time_write: Input/output error 16KiB 47.9K/s 8KiB 24K/s 4KiB 182K/s

13 years, 2 months

Kingston 4GB Class 10 microSD part number: SDC10/4GB

by Andrew Bradford

# BeagleBoard-xM is my only home computer with a built-in MMC device: root@192:~/flashbench# head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 4134325344344742300000011200ba39 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001da77f800a40002d ==> /sys/block/mmcblk0/device/date <== 10/2011 ==> /sys/block/mmcblk0/device/driver <== ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x3 ==> /sys/block/mmcblk0/device/manfid <== 0x000041 ==> /sys/block/mmcblk0/device/name <== SD4GB ==> /sys/block/mmcblk0/device/oemid <== 0x3432 ==> /sys/block/mmcblk0/device/power <== ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800001000000 ==> /sys/block/mmcblk0/device/serial <== 0x00000112 ==> /sys/block/mmcblk0/device/subsystem <== ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD4GB MODALIAS=mmc:block # All further tests done using Transcend USB2.0 reader on my desktop # Partition table used for tests: andrew@bigbox:~/flashbench$ sudo sfdisk -uS -l /dev/sdc Disk /dev/sdc: 1898 cylinders, 128 heads, 32 sectors/track Units = sectors of 512 bytes, counting from 0 Device Boot Start End #sectors Id System /dev/sdc1 * 8192 7774207 7766016 c W95 FAT32 (LBA) /dev/sdc2 0 - 0 0 Empty /dev/sdc3 0 - 0 0 Empty /dev/sdc4 0 - 0 0 Empty andrew@bigbox:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 1073741824 pre 2.06ms on 2.58ms post 2.09ms diff 505µs align 536870912 pre 1.97ms on 2.45ms post 1.97ms diff 481µs align 268435456 pre 2.03ms on 2.52ms post 2.03ms diff 486µs align 134217728 pre 2.06ms on 2.59ms post 2.03ms diff 542µs align 67108864 pre 2.07ms on 2.62ms post 2.04ms diff 561µs align 33554432 pre 2.06ms on 2.5ms post 2.07ms diff 436µs align 16777216 pre 2.08ms on 2.6ms post 2.05ms diff 538µs align 8388608 pre 2.1ms on 2.64ms post 2.03ms diff 576µs align 4194304 pre 2.05ms on 2.57ms post 2.08ms diff 504µs align 2097152 pre 1.97ms on 2.47ms post 1.99ms diff 493µs align 1048576 pre 1.97ms on 2.1ms post 1.99ms diff 117µs align 524288 pre 2ms on 2.06ms post 2ms diff 59.2µs align 262144 pre 2ms on 2.06ms post 1.99ms diff 60µs align 131072 pre 1.99ms on 2.06ms post 1.99ms diff 74.3µs align 65536 pre 2.02ms on 2.06ms post 1.98ms diff 57.1µs align 32768 pre 2ms on 2.06ms post 2ms diff 64.2µs align 16384 pre 1.98ms on 2.07ms post 1.98ms diff 88.2µs align 8192 pre 1.99ms on 2.06ms post 1.99ms diff 71µs align 4096 pre 2ms on 2.03ms post 1.99ms diff 32.1µs align 2048 pre 1.99ms on 2.03ms post 1.99ms diff 39.6µs ## 2MiB erase block ## Why the drop again at 1MiB? ## 8KiB page andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=1 2MiB 13M/s 1MiB 12.5M/s 512KiB 12.4M/s 256KiB 11.1M/s 128KiB 11.9M/s 64KiB 12.4M/s 32KiB 12.3M/s 16KiB 12.4M/s 8KiB 10.2M/s 4KiB 6.26M/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=2 2MiB 12.6M/s 1MiB 4.72M/s 512KiB 1.79M/s 256KiB 818K/s 128KiB 395K/s 64KiB 195K/s 32KiB 96.7K/s 16KiB 48.2K/s 8KiB 24.1K/s 4KiB 12K/s andrew@bigbox:~/flashbench$ sudo ./flashbench /dev/sdc --open-au --erasesize=$[2*1024*1024] --blocksize=$[4*1024] --open-au-nr=1 --random 2MiB 13.2M/s 1MiB 6.02M/s 512KiB 4.8M/s 256KiB 1.39M/s 128KiB 725K/s 64KiB 315K/s 32KiB 148K/s 16KiB 80K/s 8KiB 39.5K/s 4KiB 19.6K/s ## Generally horrible at random andrew@bigbox:~/flashbench$ sudo ./flashbench --findfat --fat-nr=6 /dev/sdc --blocksize=$[8*1024] --random 4MiB 2.58M/s 2.88M/s 6.1M/s 11.9M/s 11.3M/s 12.2M/s 2MiB 2.9M/s 2.73M/s 12.2M/s 11.6M/s 12.2M/s 12.4M/s 1MiB 2.58M/s 2.92M/s 4.72M/s 3.96M/s 3.9M/s 3.94M/s 512KiB 2.95M/s 2.62M/s 1.78M/s 1.33M/s 1.71M/s 1.72M/s 256KiB 1.74M/s 1.8M/s 934K/s 926K/s 925K/s 926K/s 128KiB 1.17M/s 1.19M/s 448K/s 447K/s 447K/s 448K/s 64KiB 743K/s 765K/s 213K/s 213K/s 213K/s 214K/s 32KiB 397K/s 410K/s 112K/s 113K/s 113K/s 113K/s

13 years, 2 months

pny 8GB class 10 SDHC

by Arnd Bergmann

==> /sys/block/mmcblk0/device/cid <== 1b534d3030303030102b38208800b700 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b577f800a400000 ==> /sys/block/mmcblk0/device/date <== 07/2011 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/manfid <== 0x00001b ==> /sys/block/mmcblk0/device/name <== 00000 ==> /sys/block/mmcblk0/device/oemid <== 0x534d ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/serial <== 0x2b382088 ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=00000 MODALIAS=mmc:block 179 8 7778304 mmcblk0 179 9 7774208 mmcblk0p1 $ sudo ./flashbench -a /dev/mmcblk0 --blocksize 1024 align 805306368 pre 799µs on 1.13ms post 754µs diff 349µs align 536870912 pre 901µs on 1.19ms post 817µs diff 332µs align 402653184 pre 816µs on 1.13ms post 771µs diff 341µs align 268435456 pre 901µs on 1.2ms post 830µs diff 332µs align 201326592 pre 786µs on 1.13ms post 749µs diff 359µs align 134217728 pre 887µs on 1.17ms post 820µs diff 317µs align 100663296 pre 804µs on 1.12ms post 755µs diff 344µs align 67108864 pre 908µs on 1.2ms post 840µs diff 330µs align 50331648 pre 805µs on 1.12ms post 757µs diff 341µs align 33554432 pre 847µs on 1.13ms post 797µs diff 311µs align 25165824 pre 774µs on 1.1ms post 753µs diff 338µs align 16777216 pre 756µs on 962µs post 744µs diff 212µs align 12582912 pre 715µs on 1.03ms post 752µs diff 297µs align 8388608 pre 746µs on 979µs post 746µs diff 232µs align 6291456 pre 714µs on 1.09ms post 779µs diff 342µs align 4194304 pre 758µs on 995µs post 783µs diff 224µs align 3145728 pre 672µs on 766µs post 767µs diff 46.3µs align 2097152 pre 731µs on 991µs post 769µs diff 241µs align 1572864 pre 672µs on 764µs post 761µs diff 48.2µs align 1048576 pre 672µs on 769µs post 775µs diff 45.2µs align 786432 pre 674µs on 766µs post 767µs diff 45.8µs align 524288 pre 660µs on 755µs post 771µs diff 39.5µs align 393216 pre 670µs on 767µs post 762µs diff 51.8µs align 262144 pre 667µs on 771µs post 778µs diff 48.7µs align 196608 pre 671µs on 768µs post 768µs diff 48.5µs align 131072 pre 659µs on 763µs post 771µs diff 47.8µs align 98304 pre 666µs on 765µs post 767µs diff 49µs align 65536 pre 658µs on 764µs post 776µs diff 47µs align 49152 pre 662µs on 760µs post 769µs diff 44.8µs align 32768 pre 670µs on 773µs post 769µs diff 53.5µs align 24576 pre 679µs on 761µs post 783µs diff 30µs align 16384 pre 680µs on 778µs post 781µs diff 47.5µs align 12288 pre 740µs on 732µs post 732µs diff -4351ns arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --findfat --fat-nr=5 --erasesize=$[8 * 1024 * 1024] 8MiB 4.55M/s 7.82M/s 7.76M/s 7.8M/s 7.81M/s 4MiB 7.79M/s 7.72M/s 7.68M/s 6.62M/s 7.79M/s 2MiB 7.75M/s 7.72M/s 7.71M/s 6.49M/s 7.71M/s 1MiB 7.77M/s 7.76M/s 7.7M/s 6.41M/s 7.75M/s 512KiB 7.8M/s 7.78M/s 7.76M/s 6.55M/s 7.8M/s 256KiB 7.7M/s 7.79M/s 7.76M/s 6.48M/s 7.7M/s 128KiB 7.75M/s 7.72M/s 7.71M/s 6.49M/s 7.56M/s 64KiB 7.75M/s 7.73M/s 7.7M/s 6.48M/s 7.74M/s 32KiB 5.79M/s 5.82M/s 5.79M/s 5.07M/s 5.79M/s 16KiB 3.72M/s 2.09M/s 2.67M/s 2.51M/s 1.62M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --findfat --fat-nr=4 --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 7.76M/s 7.66M/s 7.65M/s 7.78M/s 2MiB 3.05M/s 5.53M/s 7.65M/s 7.77M/s 1MiB 2.36M/s 5.54M/s 7.68M/s 7.79M/s 512KiB 2.37M/s 5.53M/s 7.42M/s 7.78M/s 256KiB 3.58M/s 5.55M/s 7.67M/s 7.78M/s 128KiB 3.62M/s 5.54M/s 7.63M/s 7.76M/s 64KiB 7.74M/s 5.56M/s 7.66M/s 7.78M/s 32KiB 5.83M/s 4.48M/s 5.76M/s 5.84M/s 16KiB 3.68M/s 3.16M/s 2.11M/s 2.11M/s 8KiB 1.93M/s 1.08M/s 1.89M/s 1.36M/s 4KiB 814K/s 761K/s 927K/s 794K/s 2KiB 362K/s 442K/s 427K/s 402K/s 1KiB 217K/s 215K/s 224K/s 216K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] --random 8MiB 5.55M/s 4MiB 4.48M/s 2MiB 3.02M/s 1MiB 1.64M/s 512KiB 829K/s 512KiB 463K/s 256KiB 203K/s 128KiB 179K/s 64KiB 212K/s 32KiB 167K/s 16KiB 3.77M/s $ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=1 --erasesize=$[8 1024] --blocksize 512 8MiB 5.6M/s 4MiB 2.12M/s 2MiB 3.99M/s 1MiB 2.52M/s 512KiB 2.5M/s 256KiB 3.96M/s 128KiB 3.99M/s 64KiB 5.62M/s 32KiB 4.54M/s 16KiB 3.74M/s 8KiB 1.68M/s 4KiB 757K/s 2KiB 407K/s $ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=1 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 6MiB 7.63M/s 3MiB 4.45M/s 1.5MiB 4.43M/s 768KiB 2.38M/s 384KiB 2.39M/s 192KiB 3.11M/s 96KiB 4.05M/s 48KiB 6.16M/s 24KiB 4.11M/s 12KiB 1.86M/s 6KiB 1.14M/s 3KiB 527K/s 1.5KiB 314K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=1 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] 6MiB 7.79M/s 3MiB 2.37M/s 1.5MiB 2.36M/s 768KiB 2.38M/s 384KiB 2.39M/s 192KiB 3.1M/s 96KiB 4.03M/s 48KiB 6.15M/s 24KiB 4.12M/s 12KiB 1.86M/s 6KiB 1.12M/s 3KiB 526K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=1 --erasesize=$[6 * 1024 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] --random 6MiB 7.45M/s 3MiB 1.77M/s 1.5MiB 1.69M/s 768KiB 599K/s 384KiB 340K/s 192KiB 171K/s 96KiB 199K/s 48KiB 174K/s 24KiB 193K/s 12KiB 1.55M/s 6KiB 1.06M/s 3KiB 543K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=3 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] [sudo] password for arnd: 6MiB 7.39M/s 3MiB 4.44M/s 1.5MiB 2.96M/s 768KiB 2.31M/s 384KiB 1.61M/s 192KiB 1.53M/s 96KiB 1.13M/s 48KiB 1.14M/s 24KiB 1.11M/s 12KiB 1.25M/s 6KiB 921K/s ^rnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=6 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] 6MiB 7.22M/s 3MiB 4.82M/s 1.5MiB 2.6M/s 768KiB 1.24M/s 384KiB 633K/s 192KiB 321K/s 96KiB 162K/s ^rnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=4 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] 6MiB 5.07M/s 3MiB 5.05M/s 1.5MiB 2.73M/s 768KiB 1.25M/s 384KiB 640K/s ^rnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=2 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] 6MiB 4.56M/s 3MiB 5.91M/s 1.5MiB 7.9M/s 768KiB 7.93M/s 384KiB 7.9M/s 192KiB 7.88M/s 96KiB 6.72M/s 48KiB 6.25M/s 24KiB 4.21M/s 12KiB 1.65M/s 6KiB 942K/s 3KiB 570K/s 1.5KiB 297K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=2 --erasesize=$[6 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] --random 6MiB 7.73M/s 3MiB 5.75M/s 1.5MiB 5.06M/s 768KiB 1.99M/s 384KiB 1.12M/s 192KiB 512K/s ^rnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=2 --erasesize=$[3 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] 3MiB 4.53M/s 1.5MiB 3.56M/s 768KiB 4.5M/s 384KiB 4.49M/s 192KiB 4.49M/s 96KiB 4.09M/s 48KiB 3.9M/s 24KiB 2.97M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --open-au-nr=3 --erasesize=$[3 * 1024 * 1024] --blocksize 1536 --offset=$[64 * 1024 * 576] 3MiB 5.02M/s 1.5MiB 2.92M/s 768KiB 2.11M/s 384KiB 1.45M/s 192KiB 1.33M/s 96KiB 1.06M/s 48KiB 1.04M/s 24KiB 1.05M/s 12KiB 1.38M/s 6KiB 910K/s After removing the card, it was broken and could no longer be read...

13 years, 3 months

Merry Christmas G&K.Ing

by Cngking

To ensure delivery of these Emails to your inbox, please add sales(a)gk-ing.com to your email address book. Dear Friend: Thank for you support in the past 2011,Coming Christmas and New year day.G&K.ing wish you Merry Christmas! Happy New Year!! Quality,Service,Long Term Cooperation---Our Unremitting Pursuit!!! Sincerely/Gwen G&K.Ing,We make miracle. Add:Rm 703.King Lihua Commercial Building,NO.1133 Yiyuan Road,Bao"an,Shenzhen,China Tel: 86(0)755 2220 8877 Fax:86(0)755 2214 1877 Website : www.gk-ing.com If you don't want to receive these Emails, please click unsubscribe.

13 years, 4 months

Merry Christmas&Happy New Year

by 1impress Fungchoi Group (Pte) Lt

13 years, 4 months

Kingston CF 2GB

by Philippe De Muyter

Hello Arnd, Here are the results for the Kingston CF 2GB (Assy in TAIWAN). The one marked with (Assy in Japan) have another size, and probabbly other characteristics. Could the size be related to the number of open-au's ? Philippe tmp179:~ # cat /proc/partitions major minor #blocks name 8 0 244198584 sda 8 1 2103296 sda1 8 2 20972544 sda2 8 16 1982232 sdb 8 17 1975963 sdb1 tmp179:~ # ./flashbench -a -b 1024 /dev/sdb sched_setscheduler: Operation not permitted align 67108864 pre 343µs on 370µs post 321µs diff 37.5µs align 33554432 pre 342µs on 367µs post 319µs diff 36.5µs align 16777216 pre 342µs on 368µs post 320µs diff 36.5µs align 8388608 pre 343µs on 368µs post 318µs diff 37.1µs align 4194304 pre 342µs on 368µs post 319µs diff 37.1µs align 2097152 pre 343µs on 368µs post 319µs diff 37µs align 1048576 pre 344µs on 370µs post 320µs diff 38.3µs align 524288 pre 322µs on 350µs post 344µs diff 17.1µs align 262144 pre 320µs on 349µs post 344µs diff 16.8µs align 131072 pre 321µs on 349µs post 344µs diff 16.9µs align 65536 pre 321µs on 350µs post 344µs diff 17.2µs align 32768 pre 323µs on 351µs post 344µs diff 18µs align 16384 pre 320µs on 326µs post 321µs diff 5.4µs align 8192 pre 321µs on 325µs post 320µs diff 5µs align 4096 pre 320µs on 326µs post 321µs diff 5.6µs align 2048 pre 320µs on 325µs post 321µs diff 4.85µs tmp179:~ # hdparm -i /dev/sdb /dev/sdb: Model=CF CARD 2GB, FwRev=20071116, SerialNo=CF 2GB 20051F71 Config={ HardSect NotMFM Fixed DTR>10Mbs } RawCHS=3933/16/63, TrkSize=0, SectSize=576, ECCbytes=4 BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=off CurCHS=3933/16/63, CurSects=3964464, LBA=yes, LBAsects=3964464 IORDY=no, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: *mdma0 mdma1 mdma2 AdvancedPM=no * signifies the current active mode tmp179:~ # for i in `seq 1 10`; do echo $i; ./flashbench --open-au --open-au-nr=$i --erasesize=$[1024 * 1024] --blocksize=16384 /dev/sdb; done 1 sched_setscheduler: Operation not permitted 1MiB 11M/s 512KiB 11.1M/s 256KiB 11M/s 128KiB 11M/s 64KiB 10.7M/s 32KiB 10M/s 16KiB 8.83M/s 2 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 11.1M/s 256KiB 11.1M/s 128KiB 11.1M/s 64KiB 10.7M/s 32KiB 10.1M/s 16KiB 8.87M/s 3 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 11.1M/s 256KiB 11.1M/s 128KiB 11.1M/s 64KiB 10.8M/s 32KiB 10.1M/s 16KiB 8.85M/s 4 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 8.32M/s 256KiB 4.56M/s 128KiB 2.39M/s ^C tmp179:~ # for i in `seq 1 10`; do echo $i; ./flashbench --open-au --open-au-nr=$i --erasesize=$[1024 * 1024] --blocksize=16384 /dev/sdb --random; done 1 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 11.1M/s 256KiB 7.38M/s 128KiB 6.18M/s 64KiB 6.12M/s 32KiB 6.47M/s 16KiB 7.04M/s 2 sched_setscheduler: Operation not permitted 1MiB 7.37M/s 512KiB 8.05M/s 256KiB 6.72M/s 128KiB 6.4M/s 64KiB 6.53M/s 32KiB 6.55M/s 16KiB 7.04M/s 3 sched_setscheduler: Operation not permitted 1MiB 8.66M/s 512KiB 9.11M/s 256KiB 6.79M/s 128KiB 5.55M/s 64KiB 4.24M/s 32KiB 4.05M/s 16KiB 3.92M/s 4 sched_setscheduler: Operation not permitted 1MiB 9.37M/s 512KiB 9.67M/s 256KiB 6.73M/s 128KiB 4.79M/s 64KiB 3.32M/s 32KiB 3.07M/s 16KiB 3.52M/s 5 sched_setscheduler: Operation not permitted 1MiB 9.8M/s 512KiB 7.8M/s 256KiB 4.75M/s 128KiB 4.21M/s 64KiB 2.99M/s 32KiB 2.46M/s 16KiB 2.75M/s 6 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 7.1M/s 256KiB 4.03M/s 128KiB 2.7M/s 64KiB 2.83M/s 32KiB 2.38M/s 16KiB 2.45M/s 7 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6.71M/s 256KiB 3.73M/s 128KiB 2.43M/s 64KiB 2.49M/s 32KiB 2.07M/s 16KiB 2.11M/s 8 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6.4M/s 256KiB 3.5M/s 128KiB 2.26M/s 64KiB 2.23M/s 32KiB 1.85M/s 16KiB 1.86M/s 9 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6.18M/s 256KiB 3.33M/s 128KiB 2.1M/s 64KiB 2.04M/s 32KiB 1.65M/s 16KiB 1.66M/s 10 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6M/s 256KiB 3.18M/s 128KiB 1.99M/s 64KiB 1.88M/s 32KiB 1.52M/s 16KiB 1.51M/s (reverse-i-search)`fat': ./flashbench --findfat --^Ct-nr=10 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 /dev/sdb tmp179:~ # ./flashbench --findfat --fat-nr=10 --erasesize=$[1024 * 1024] --blocksize=1024 /dev/sdb sched_setscheduler: Operation not permitted 1MiB 4.32M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.2M/s 11.3M/s 11.4M/s 11.3M/s 11.4M/s 512KiB 11.3M/s 11.4M/s 11.1M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11M/s 11.4M/s 256KiB 11.4M/s 11.4M/s 11.2M/s 11.2M/s 11.2M/s 11.2M/s 11.3M/s 11.4M/s 11.4M/s 11.3M/s 128KiB 11.3M/s 11.3M/s 11.2M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.2M/s 11.3M/s 11.4M/s 64KiB 11M/s 11M/s 11M/s 11M/s 10.8M/s 11M/s 11M/s 11M/s 11M/s 11M/s 32KiB 9.98M/s 10.3M/s 10.3M/s 10.3M/s 10.2M/s 10.1M/s 10.2M/s 10.2M/s 10.2M/s 10.3M/s 16KiB 8.99M/s 9.01M/s 9.01M/s 8.99M/s 8.94M/s 9.02M/s 9.03M/s 9.03M/s 9.01M/s 8.95M/s 8KiB 7.2M/s 7.23M/s 7.23M/s 7.22M/s 7.21M/s 7.23M/s 7.13M/s 7.23M/s 7.23M/s 7.22M/s 4KiB 4.98M/s 4.97M/s 4.83M/s 4.97M/s 4.97M/s 4.97M/s 4.92M/s 4.91M/s 4.93M/s 4.93M/s 2KiB 3.04M/s 3.06M/s 3.05M/s 3.06M/s 3.05M/s 3.06M/s 3.03M/s 3.06M/s 3.06M/s 3.06M/s 1KiB 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.25M/s 1.26M/s 1.26M/s 1.24M/s 1.26M/s 1.25M/s tmp179:~ # ./flashbench --findfat --fat-nr=10 --erasesize=$[1024 * 1024] --blocksize=1024 /dev/sdb sched_setscheduler: Operation not permitted 1MiB 11.2M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.4M/s 512KiB 11.4M/s 11.2M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.2M/s 11.3M/s 256KiB 11M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.3M/s 11.1M/s 11.4M/s 11.4M/s 11M/s 128KiB 11.4M/s 11.2M/s 11.3M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.3M/s 11.4M/s 11.3M/s 64KiB 11M/s 11M/s 11M/s 10.9M/s 11M/s 11M/s 11M/s 11M/s 11M/s 11M/s 32KiB 10.1M/s 10.2M/s 10M/s 10.4M/s 10.3M/s 10.3M/s 10.3M/s 10.3M/s 10.1M/s 10.3M/s 16KiB 9.03M/s 8.82M/s 9.02M/s 8.93M/s 8.94M/s 9.01M/s 9.03M/s 9M/s 9.02M/s 9.01M/s 8KiB 7.24M/s 7.22M/s 7.23M/s 7.21M/s 7.22M/s 7.17M/s 7.24M/s 7.23M/s 7.22M/s 7.23M/s 4KiB 4.97M/s 4.98M/s 4.92M/s 4.93M/s 4.84M/s 4.99M/s 4.97M/s 4.96M/s 4.97M/s 4.96M/s 2KiB 3.01M/s 3.06M/s 3.06M/s 2.97M/s 3.05M/s 3.03M/s 3.03M/s 3.05M/s 3.06M/s 3.05M/s 1KiB 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.25M/s 1.24M/s 1.26M/s tmp179:~ # -- Philippe De Muyter +32 2 6101532 Macq SA rue de l'Aeronef 2 B-1140 Bruxelles

13 years, 5 months

SanDisk SDSDQY-008G-A11A Mobile Ultra 8GB microSD card

by Andrew Bradford

Just received a new SanDisk Mobile Ultra 8GB microSD card. Tests done on my HP Elitebook 8560w with Debian 6 and 2.6.38 kernel. Card is direct out of the packaging and into tests. It looks like 4MB erase blocks and either 8kB or 32kB pages, but I'm not really sure. Tests done with 8kB blocksize. 6 connections work well, 7 and 8 fall off quickly in performance. If there's any other info needed, please let me know. -Andrew andrew@bradford:~/flashbench$ sudo head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 035344535530384780716a01f200bb00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b377f800a404000 ==> /sys/block/mmcblk0/device/date <== 11/2011 ==> /sys/block/mmcblk0/device/driver <== ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/name <== SU08G ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/power <== ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800300000000 ==> /sys/block/mmcblk0/device/serial <== 0x716a01f2 ==> /sys/block/mmcblk0/device/subsystem <== ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SU08G MODALIAS=mmc:block andrew@bradford:~/flashbench$ sudo fdisk -l /dev/mmcblk0 Disk /dev/mmcblk0: 7948 MB, 7948206080 bytes 81 heads, 10 sectors/track, 19165 cylinders Units = cylinders of 810 * 512 = 414720 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/mmcblk0p1 11 19166 7757824 b W95 FAT32 andrew@bradford:~/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 align 2147483648 pre 508µs on 575µs post 467µs diff 87.3µs align 1073741824 pre 518µs on 601µs post 469µs diff 107µs align 536870912 pre 526µs on 600µs post 469µs diff 103µs align 268435456 pre 509µs on 598µs post 468µs diff 110µs align 134217728 pre 526µs on 599µs post 469µs diff 102µs align 67108864 pre 519µs on 597µs post 467µs diff 104µs align 33554432 pre 515µs on 598µs post 468µs diff 106µs align 16777216 pre 510µs on 594µs post 466µs diff 106µs align 8388608 pre 508µs on 584µs post 465µs diff 97.4µs align 4194304 pre 492µs on 593µs post 480µs diff 107µs align 2097152 pre 480µs on 478µs post 468µs diff 4.16µs align 1048576 pre 482µs on 481µs post 470µs diff 5.2µs align 524288 pre 482µs on 482µs post 467µs diff 7.22µs align 262144 pre 480µs on 479µs post 469µs diff 4.83µs align 131072 pre 480µs on 480µs post 467µs diff 7.06µs align 65536 pre 480µs on 480µs post 470µs diff 4.72µs align 32768 pre 479µs on 480µs post 464µs diff 8.17µs align 16384 pre 481µs on 478µs post 470µs diff 3.09µs align 8192 pre 468µs on 471µs post 470µs diff 1.54µs align 4096 pre 481µs on 464µs post 467µs diff -9689ns align 2048 pre 451µs on 456µs post 456µs diff 2.33µs andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=1 4MiB 10.7M/s 2MiB 10.7M/s 1MiB 10.7M/s 512KiB 10.7M/s 256KiB 10.6M/s 128KiB 10.6M/s 64KiB 10.6M/s 32KiB 9.53M/s 16KiB 8.09M/s 8KiB 5.99M/s andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=6 4MiB 10.6M/s 2MiB 10.7M/s 1MiB 10.6M/s 512KiB 10.6M/s 256KiB 10.6M/s 128KiB 10.4M/s 64KiB 10.3M/s 32KiB 9.04M/s 16KiB 7.36M/s 8KiB 5.19M/s andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=7 4MiB 6.55M/s 2MiB 7.04M/s 1MiB 5.81M/s 512KiB 5.77M/s 256KiB 5.65M/s 128KiB 5.57M/s 64KiB 6.52M/s 32KiB 7.24M/s 16KiB 6.29M/s 8KiB 4.69M/s andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=8 4MiB 7.08M/s 2MiB 5.53M/s 1MiB 3.9M/s 512KiB 4.7M/s 256KiB 4.05M/s 128KiB 4.54M/s 64KiB 5.84M/s 32KiB 6.28M/s 16KiB 5.66M/s 8KiB 614K/s ndrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=2 --random 4MiB 10.4M/s 2MiB 10.6M/s 1MiB 10.6M/s 512KiB 10.5M/s 256KiB 8.4M/s 128KiB 4.36M/s 64KiB 2.39M/s 32KiB 1.23M/s 16KiB 604K/s 8KiB 2.23M/s andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=6 --random 4MiB 8.06M/s 2MiB 6.91M/s 1MiB 10.6M/s 512KiB 10.6M/s 256KiB 8.44M/s 128KiB 4.37M/s 64KiB 2.4M/s 32KiB 1.23M/s 16KiB 606K/s 8KiB 1.9M/s andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=7 --random 4MiB 6.65M/s 2MiB 6.52M/s 1MiB 5.75M/s 512KiB 4.01M/s 256KiB 2.93M/s 128KiB 1.73M/s 64KiB 952K/s 32KiB 533K/s 16KiB 365K/s 8KiB 1.35M/s

13 years, 5 months

PNY 4GB microSD Class 4 C04G Taiwan manfid 0x000002 oemid 0x544d

by Andrew Bradford

If I'm reading my results correctly, this card is 2MB erase blocks and 8KB pages and it can only have 1 open segment at a time? It's not that fast of a card, I have another one with ext3 running on a PandaBoard with Emdebian Squeeze. As this is my first usage of flashbench, if there's any other info that would be useful, please let me know. This card was brand new before testing. Thanks, Andrew andrew@bradford:~/flashbench$ sudo head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 02544d534430344760b099f09300b400 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d877f800a400000 ==> /sys/block/mmcblk0/device/date <== 04/2011 ==> /sys/block/mmcblk0/device/driver <== ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x6 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/name <== SD04G ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /sys/block/mmcblk0/device/power <== ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 02b5800026025202 ==> /sys/block/mmcblk0/device/serial <== 0xb099f093 ==> /sys/block/mmcblk0/device/subsystem <== ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD04G MODALIAS=mmc:block andrew@bradford:~/flashbench$ sudo fdisk -l /dev/mmcblk0 Disk /dev/mmcblk0: 3963 MB, 3963617280 bytes 128 heads, 63 sectors/track, 960 cylinders Units = cylinders of 8064 * 512 = 4128768 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/mmcblk0p1 2 960 3866624 b W95 FAT32 andrew@bradford:~/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 align 1073741824 pre 896µs on 1.05ms post 753µs diff 225µs align 536870912 pre 959µs on 1.09ms post 731µs diff 241µs align 268435456 pre 744µs on 867µs post 731µs diff 129µs align 134217728 pre 744µs on 862µs post 731µs diff 125µs align 67108864 pre 741µs on 878µs post 745µs diff 135µs align 33554432 pre 742µs on 878µs post 746µs diff 134µs align 16777216 pre 742µs on 874µs post 747µs diff 130µs align 8388608 pre 739µs on 889µs post 754µs diff 143µs align 4194304 pre 754µs on 894µs post 749µs diff 142µs align 2097152 pre 764µs on 899µs post 752µs diff 141µs align 1048576 pre 761µs on 791µs post 762µs diff 29.1µs ## align 524288 pre 751µs on 793µs post 760µs diff 37.7µs align 262144 pre 758µs on 788µs post 763µs diff 27.9µs align 131072 pre 761µs on 799µs post 772µs diff 32.5µs align 65536 pre 761µs on 792µs post 770µs diff 26.6µs align 32768 pre 761µs on 789µs post 762µs diff 27.7µs align 16384 pre 762µs on 789µs post 762µs diff 26.8µs align 8192 pre 762µs on 787µs post 760µs diff 26µs align 4096 pre 760µs on 761µs post 761µs diff 318ns ## align 2048 pre 757µs on 757µs post 757µs diff 104ns andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[2 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=1 2MiB 8.46M/s 1MiB 8.28M/s 512KiB 8.42M/s 256KiB 8.11M/s 128KiB 8.42M/s 64KiB 8.15M/s 32KiB 7.71M/s 16KiB 5.47M/s 8KiB 3.32M/s andrew@bradford:~/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[2 * 1024 * 1024] --blocksize=$[8 * 1024] --open-au-nr=2 2MiB 5.82M/s 1MiB 4.82M/s 512KiB 2.23M/s 256KiB 1.09M/s 128KiB 545K/s 64KiB 273K/s 32KiB 136K/s 16KiB 68.2K/s 8KiB 622K/s

13 years, 5 months

IMPRESS your customer with our INNOVATED USB NOW!

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13 years, 6 months

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