==> /sys/block/mmcblk0/device/cid <== 744a455344432020000000037200b200 ==> /sys/block/mmcblk0/device/csd <== 400e00325b590000f1dd7f800a400000 ==> /sys/block/mmcblk0/device/date <== 02/2011 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x0 ==> /sys/block/mmcblk0/device/manfid <== 0x000074 ==> /sys/block/mmcblk0/device/name <== SDC ==> /sys/block/mmcblk0/device/oemid <== 0x4a45 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/serial <== 0x00000372
Disk /dev/mmcblk0: 32.5 GB, 32462864384 bytes 255 heads, 63 sectors/track, 3946 cylinders, total 63404032 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: 0x00099590
Device Boot Start End Blocks Id System /dev/mmcblk0p1 8192 63404031 31697920 83 Linux
arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 align 6442450944 pre 611µs on 1.11ms post 903µs diff 354µs align 4294967296 pre 678µs on 1.12ms post 897µs diff 330µs align 3221225472 pre 631µs on 1.12ms post 895µs diff 353µs align 2147483648 pre 649µs on 1.1ms post 897µs diff 323µs align 1610612736 pre 565µs on 990µs post 895µs diff 259µs align 1073741824 pre 637µs on 1.09ms post 896µs diff 328µs align 805306368 pre 566µs on 992µs post 897µs diff 261µs align 536870912 pre 565µs on 992µs post 898µs diff 261µs align 402653184 pre 554µs on 990µs post 900µs diff 263µs align 268435456 pre 669µs on 1.1ms post 1.01ms diff 263µs align 201326592 pre 542µs on 937µs post 810µs diff 260µs align 134217728 pre 544µs on 1.01ms post 888µs diff 298µs align 100663296 pre 535µs on 933µs post 809µs diff 261µs align 67108864 pre 537µs on 937µs post 810µs diff 263µs align 50331648 pre 539µs on 933µs post 789µs diff 269µs align 33554432 pre 602µs on 1.08ms post 885µs diff 334µs align 25165824 pre 600µs on 1.08ms post 883µs diff 334µs align 16777216 pre 609µs on 1.08ms post 886µs diff 331µs align 12582912 pre 600µs on 1.08ms post 888µs diff 334µs align 8388608 pre 609µs on 1.08ms post 889µs diff 333µs align 6291456 pre 720µs on 962µs post 958µs diff 123µs align 4194304 pre 603µs on 1.07ms post 885µs diff 323µs align 3145728 pre 661µs on 988µs post 913µs diff 201µs align 2097152 pre 685µs on 954µs post 928µs diff 147µs align 1572864 pre 694µs on 956µs post 927µs diff 145µs align 1048576 pre 690µs on 960µs post 933µs diff 149µs align 786432 pre 692µs on 955µs post 929µs diff 145µs align 524288 pre 700µs on 957µs post 930µs diff 143µs align 393216 pre 675µs on 957µs post 928µs diff 155µs align 262144 pre 674µs on 951µs post 923µs diff 153µs align 196608 pre 699µs on 948µs post 922µs diff 138µs align 131072 pre 685µs on 954µs post 916µs diff 154µs align 98304 pre 669µs on 941µs post 857µs diff 178µs align 65536 pre 701µs on 942µs post 940µs diff 122µs align 49152 pre 669µs on 899µs post 900µs diff 115µs align 32768 pre 634µs on 906µs post 857µs diff 161µs align 24576 pre 605µs on 931µs post 886µs diff 186µs align 16384 pre 627µs on 921µs post 867µs diff 174µs align 12288 pre 787µs on 782µs post 757µs diff 10.1µs align 8192 pre 595µs on 943µs post 896µs diff 198µs align 6144 pre 669µs on 668µs post 631µs diff 18µs align 4096 pre 743µs on 742µs post 707µs diff 17.1µs align 3072 pre 782µs on 784µs post 743µs diff 21.1µs align 2048 pre 819µs on 819µs post 783µs diff 18.2µs
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=512 --erasesize=4194304 --open-au-nr=1 4MiB 5.52M/s 2MiB 10.9M/s 1MiB 10.9M/s 512KiB 10.2M/s 256KiB 10.6M/s 128KiB 10.7M/s 64KiB 10.7M/s 32KiB 6.85M/s 16KiB 4.48M/s 8KiB 2.51M/s 4KiB 1.62M/s 2KiB 970K/s 1KiB 534K/s 512B 309K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=2 4MiB 6.7M/s 2MiB 10.8M/s 1MiB 11.2M/s 512KiB 11.2M/s 256KiB 11.1M/s 128KiB 11.1M/s 64KiB 11.1M/s 32KiB 7.28M/s 16KiB 4.81M/s 8KiB 2.49M/s 4KiB 1.38M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=3 4MiB 11.4M/s 2MiB 8.11M/s 1MiB 6.49M/s 512KiB 11.7M/s 256KiB 11.6M/s 128KiB 11.5M/s 64KiB 11.7M/s 32KiB 7.62M/s 16KiB 5.18M/s 8KiB 2.64M/s 4KiB 1.46M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=4 4MiB 11.8M/s 2MiB 9.11M/s 1MiB 11.8M/s 512KiB 11.8M/s 256KiB 11.7M/s 128KiB 11.6M/s 64KiB 11.6M/s 32KiB 7.76M/s 16KiB 5.22M/s 8KiB 2.69M/s 4KiB 1.46M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=5 --random 4MiB 10.7M/s 2MiB 10.7M/s 1MiB 10.6M/s 512KiB 10.6M/s 256KiB 10.6M/s 128KiB 10.4M/s 64KiB 10.2M/s 32KiB 6.57M/s 16KiB 4.23M/s 8KiB 1.64M/s 4KiB 814K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=5 4MiB 11.6M/s 2MiB 9.32M/s 1MiB 11.6M/s 512KiB 11.6M/s 256KiB 11.5M/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=6 4MiB 9.38M/s 2MiB 4.49M/s 1MiB 2.04M/s 512KiB 1.11M/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=6 --random 4MiB 5.63M/s 2MiB 3.69M/s 1MiB 1.97M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --blocksize=4096 --erasesize=4194304 --open-au-nr=6 --random --findfat --fat-nr=5 4MiB 10.7M/s 10.7M/s 10.8M/s 10.9M/s 10.9M/s 2MiB 10.6M/s 10.9M/s 11M/s 10.7M/s 10.8M/s 1MiB 10.7M/s 10.7M/s 10.6M/s 10.9M/s 10.9M/s 512KiB 10.8M/s 10.7M/s 10.9M/s 10.7M/s 10.8M/s 256KiB 10.5M/s 10.9M/s 10.9M/s 10.9M/s 10.7M/s 128KiB 10.7M/s 10.8M/s 10.7M/s 10.6M/s 10.7M/s 64KiB 10.7M/s 10.7M/s 10.5M/s 10.7M/s 10.7M/s 32KiB 6.91M/s 7.06M/s 7.03M/s 7.07M/s 6.92M/s 16KiB 4.52M/s 4.49M/s 4.52M/s 4.49M/s 4.49M/s 8KiB 1.72M/s 1.73M/s 1.71M/s 1.71M/s 1.71M/s 4KiB 863K/s 850K/s 842K/s 782K/s 854K/s