[Flashbench] Silicon Systems CF Card 2 GB
Arnd Bergmann
arnd at arndb.de
Fri Apr 22 10:44:28 UTC 2011
# sudo fdisk /dev/sdc -lu
Disk /dev/sdc: 2 GB, 2097446400 bytes
255 heads, 63 sectors/track, 255 cylinders, total 4096575 sectors
Units = sectors of 1 * 512 = 512 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 * 63 144584 72261 e FAT16 LBA
/dev/sdc2 144585 4096574 1967962 83 Linux
$ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100
align 268435456 pre 611µs on 687µs post 608µs diff 77.3µs
align 134217728 pre 598µs on 695µs post 597µs diff 97.8µs
align 67108864 pre 601µs on 605µs post 601µs diff 4.26µs
align 33554432 pre 598µs on 607µs post 602µs diff 7.52µs
align 16777216 pre 600µs on 604µs post 603µs diff 3.1µs
align 8388608 pre 603µs on 609µs post 606µs diff 4.29µs
align 4194304 pre 589µs on 593µs post 591µs diff 3.13µs
align 2097152 pre 593µs on 596µs post 591µs diff 3.28µs
align 1048576 pre 606µs on 602µs post 592µs diff 3.37µs
align 524288 pre 604µs on 610µs post 610µs diff 3.38µs
align 262144 pre 588µs on 591µs post 591µs diff 1.42µs
align 131072 pre 585µs on 606µs post 584µs diff 20.7µs
align 65536 pre 592µs on 590µs post 590µs diff -344ns
align 32768 pre 591µs on 587µs post 588µs diff -2848ns
align 16384 pre 588µs on 588µs post 585µs diff 1.95µs
align 8192 pre 591µs on 586µs post 590µs diff -4470ns
align 4096 pre 586µs on 589µs post 584µs diff 3.41µs
align 2048 pre 594µs on 593µs post 590µs diff 1.21µs
$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 8192]
8MiB 5.21M/s
4MiB 5.23M/s
2MiB 5.24M/s
1MiB 5.24M/s
512KiB 5.31M/s
256KiB 5.28M/s
128KiB 5.27M/s
64KiB 5.24M/s
32KiB 5.21M/s
16KiB 5.09M/s
8KiB 4.85M/s
4KiB 4.43M/s
2KiB 3.9M/s
1KiB 2.64M/s
512B 1.35M/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 8192] --random
8MiB 5.25M/s
4MiB 5.24M/s
2MiB 5.23M/s
1MiB 5.24M/s
512KiB 5.26M/s
256KiB 5.34M/s
128KiB 5.26M/s
64KiB 3.2M/s
32KiB 1.8M/s
16KiB 970K/s
8KiB 509K/s
^C
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=2
128KiB 3.1M/s
64KiB 3.68M/s
32KiB 2.01M/s
16KiB 1.08M/s
8KiB 632K/s
4KiB 4.43M/s
2KiB 3.91M/s
1KiB 2.65M/s
512B 1.35M/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=4
512KiB 5.28M/s
256KiB 5.13M/s
128KiB 5.4M/s
64KiB 4.01M/s
32KiB 3.36M/s
16KiB 4.92M/s
8KiB 5.02M/s
4KiB 4.32M/s
2KiB 3.98M/s
1KiB 2.68M/s
512B 1.36M/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=5
512KiB 4.95M/s
256KiB 5.47M/s
128KiB 5.19M/s
64KiB 3.8M/s
32KiB 2.27M/s
16KiB 1.35M/s
8KiB 762K/s
4KiB 465K/s
2KiB 293K/s
1KiB 180K/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=6
512KiB 5.2M/s
256KiB 5.44M/s
128KiB 5.23M/s
64KiB 3.67M/s
32KiB 2.14M/s
16KiB 1.22M/s
8KiB 676K/s
4KiB 377K/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 1024] --open-au-nr=4
1MiB 5.02M/s
512KiB 5.4M/s
256KiB 5.28M/s
128KiB 5.24M/s
64KiB 5.26M/s
32KiB 5.19M/s
16KiB 5.25M/s
8KiB 4.85M/s
4KiB 4.53M/s
2KiB 3.89M/s
1KiB 2.66M/s
512B 1.35M/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=4 --random
128KiB 4.62M/s
64KiB 4.05M/s
32KiB 3.63M/s
16KiB 2.2M/s
8KiB 1.44M/s
4KiB 1.02M/s
2KiB 3.24M/s
1KiB 2.6M/s
512B 1.34M/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=4 --random
128KiB 5.29M/s
64KiB 5.28M/s
32KiB 5.24M/s
16KiB 5.12M/s
8KiB 4.79M/s
4KiB 4.44M/s
2KiB 3.91M/s
1KiB 2.64M/s
512B 1.35M/s
arnd at wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=5 --random
128KiB 5.3M/s
64KiB 4.18M/s
32KiB 4.66M/s
16KiB 2.67M/s
8KiB 1.48M/s
4KiB 793K/s
2KiB 406K/s
1KiB 197K/s
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