This is the current part number and card under the same market name as http://lists.linaro.org/pipermail/flashbench-results/2011-December/000240.ht...
andrew@brick:~/git/flashbench$ head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 035344535530384780b1d12dd100d500 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b377f800a404000 ==> /sys/block/mmcblk0/device/date <== 05/2013 ==> /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 <== 0235800100000000 ==> /sys/block/mmcblk0/device/serial <== 0xb1d12dd1 ==> /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@brick:~/git/flashbench$ sudo fdisk -l /dev/mmcblk0 Disk /dev/mmcblk0: 7948 MB, 7948206080 bytes, 15523840 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 label type: dos Disk identifier: 0x00000000
Device Boot Start End Blocks Id System /dev/mmcblk0p1 8192 15523839 7757824 b W95 FAT32
andrew@brick:~/git/flashbench$ factor 7948206080 7948206080: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 5 379
andrew@brick:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=100 align 2147483648 pre 496µs on 547µs post 495µs diff 51.9µs align 1073741824 pre 513µs on 597µs post 460µs diff 111µs align 536870912 pre 512µs on 573µs post 493µs diff 70.1µs align 268435456 pre 492µs on 542µs post 491µs diff 51µs align 134217728 pre 526µs on 604µs post 492µs diff 94.4µs align 67108864 pre 510µs on 570µs post 490µs diff 69.5µs align 33554432 pre 537µs on 598µs post 491µs diff 83.9µs align 16777216 pre 491µs on 589µs post 488µs diff 99.4µs align 8388608 pre 531µs on 596µs post 459µs diff 101µs align 4194304 pre 487µs on 580µs post 486µs diff 93.6µs align 2097152 pre 459µs on 459µs post 460µs diff -126ns align 1048576 pre 460µs on 460µs post 462µs diff -1151ns align 524288 pre 461µs on 463µs post 462µs diff 1.19µs align 262144 pre 463µs on 463µs post 461µs diff 796ns align 131072 pre 460µs on 461µs post 460µs diff 876ns align 65536 pre 460µs on 462µs post 462µs diff 600ns align 32768 pre 460µs on 460µs post 463µs diff -993ns align 16384 pre 461µs on 463µs post 460µs diff 2.69µs align 8192 pre 460µs on 459µs post 462µs diff -1472ns align 4096 pre 459µs on 461µs post 461µs diff 938ns align 2048 pre 458µs on 459µs post 458µs diff 1.39µs
## 4 MiB erase blocks
andrew@brick:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] --blocksize=$[16*1024] /dev/mmcblk0 --open-au-nr=1 4MiB 9.26M/s 2MiB 4.53M/s 1MiB 4.87M/s 512KiB 6.73M/s 256KiB 8.62M/s 128KiB 9.37M/s 64KiB 9.43M/s 32KiB 7.76M/s 16KiB 5.69M/s andrew@brick:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] --blocksize=$[16*1024] /dev/mmcblk0 --open-au-nr=2 4MiB 9.62M/s 2MiB 9.6M/s 1MiB 9.59M/s 512KiB 9.54M/s 256KiB 9.49M/s 128KiB 9.38M/s 64KiB 9.24M/s 32KiB 7.6M/s 16KiB 5.44M/s andrew@brick:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] --blocksize=$[16*1024] /dev/mmcblk0 --open-au-nr=9 4MiB 9.69M/s 2MiB 8.97M/s 1MiB 9.59M/s 512KiB 9.57M/s 256KiB 9.52M/s 128KiB 9.4M/s 64KiB 9.27M/s 32KiB 7.53M/s 16KiB 5.36M/s andrew@brick:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] --blocksize=$[16*1024] /dev/mmcblk0 --open-au-nr=10 4MiB 9.63M/s 2MiB 6.41M/s 1MiB 2.72M/s 512KiB 1.33M/s 256KiB 662K/s 128KiB 331K/s ^C
## 9 open-au linear
andrew@brick:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] --blocksize=$[16*1024] /dev/mmcblk0 --random --open-au-nr=1 4MiB 9.41M/s 2MiB 3.07M/s 1MiB 1.87M/s 512KiB 1.08M/s 256KiB 461K/s 128KiB 354K/s 64KiB 321K/s 32KiB 156K/s 16KiB 74.3K/s
## horrible at random
andrew@brick:~/git/flashbench$ sudo ./flashbench --find-fat /dev/mmcblk0 [sudo] password for andrew: 4MiB 5.12M/s 9.77M/s 9.67M/s 9.71M/s 5.44M/s 9.71M/s 2MiB 9.71M/s 9.05M/s 9.69M/s 9.68M/s 9.69M/s 9.72M/s 1MiB 9.7M/s 9.1M/s 9.75M/s 9.72M/s 9.74M/s 9.85M/s 512KiB 9.75M/s 9.1M/s 9.67M/s 9.7M/s 9.71M/s 9.71M/s 256KiB 9.65M/s 9.08M/s 9.68M/s 9.7M/s 9.71M/s 9.7M/s 128KiB 9.63M/s 9.05M/s 9.63M/s 9.64M/s 9.67M/s 9.65M/s 64KiB 9.58M/s 8.98M/s 9.61M/s 9.62M/s 9.58M/s 9.61M/s 32KiB 8.05M/s 7.82M/s 8.18M/s 8.17M/s 8.2M/s 8.16M/s 16KiB 6.04M/s 6.37M/s 6.05M/s 6.03M/s 6.05M/s 6.03M/s
Regards, Andrew