Bus 001 Device 007: ID 136b:0918 STEC
$ sudo fdisk -lu /dev/sdc Disk /dev/sdc: 8399 MB, 8399978496 bytes 255 heads, 63 sectors/track, 1021 cylinders, total 16406208 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: 0xe0230500
Device Boot Start End Blocks Id System /dev/sdc1 * 63 16064 8001 41 PPC PReP Boot /dev/sdc2 16065 224909 104422+ 83 Linux /dev/sdc3 224910 16402364 8088727+ 8e Linux LVM
arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/sdc --count=32 --blocksize=1024 align 1610612736 pre 1.37ms on 1.37ms post 1.37ms diff -777ns align 1073741824 pre 1.36ms on 1.37ms post 1.36ms diff 9.34µs align 805306368 pre 1.36ms on 1.36ms post 1.33ms diff 12.1µs align 536870912 pre 1.37ms on 1.34ms post 1.32ms diff -1903ns align 402653184 pre 1.31ms on 1.31ms post 1.29ms diff 7.38µs align 268435456 pre 1.37ms on 1.37ms post 1.37ms diff 1.56µs align 201326592 pre 1.37ms on 1.37ms post 1.37ms diff -1533ns align 134217728 pre 1.37ms on 1.37ms post 1.37ms diff 853ns align 100663296 pre 1.36ms on 1.37ms post 1.36ms diff 14.7µs align 67108864 pre 1.37ms on 1.38ms post 1.34ms diff 16.9µs align 50331648 pre 1.29ms on 1.32ms post 1.29ms diff 29.9µs align 33554432 pre 1.29ms on 1.32ms post 1.29ms diff 29.3µs align 25165824 pre 1.29ms on 1.3ms post 1.28ms diff 16.4µs align 16777216 pre 1.29ms on 1.31ms post 1.28ms diff 21.4µs align 12582912 pre 1.3ms on 1.31ms post 1.28ms diff 19.7µs align 8388608 pre 1.3ms on 1.31ms post 1.3ms diff 3.85µs align 6291456 pre 1.31ms on 1.31ms post 1.3ms diff 5.76µs align 4194304 pre 1.3ms on 1.31ms post 1.3ms diff 11.6µs align 3145728 pre 1.29ms on 1.31ms post 1.3ms diff 19.6µs align 2097152 pre 1.28ms on 1.31ms post 1.28ms diff 24.1µs align 1572864 pre 1.3ms on 1.31ms post 1.31ms diff 7.45µs align 1048576 pre 1.31ms on 1.31ms post 1.3ms diff 7.2µs align 786432 pre 1.29ms on 1.31ms post 1.3ms diff 14.5µs align 524288 pre 1.3ms on 1.31ms post 1.28ms diff 15.2µs align 393216 pre 1.28ms on 1.31ms post 1.29ms diff 22.7µs align 262144 pre 1.41ms on 1.42ms post 1.3ms diff 70.9µs align 196608 pre 1.41ms on 1.42ms post 1.29ms diff 71.3µs align 131072 pre 1.41ms on 1.42ms post 1.29ms diff 69.7µs align 98304 pre 1.4ms on 1.42ms post 1.31ms diff 70.1µs align 65536 pre 1.42ms on 1.42ms post 1.29ms diff 64.2µs align 49152 pre 1.37ms on 1.43ms post 1.31ms diff 95µs align 32768 pre 1.36ms on 1.38ms post 1.27ms diff 67.5µs align 24576 pre 1.28ms on 1.3ms post 1.3ms diff 13.2µs align 16384 pre 1.42ms on 1.4ms post 1.29ms diff 44.1µs align 12288 pre 1.3ms on 1.31ms post 1.28ms diff 18.9µs align 8192 pre 1.29ms on 1.31ms post 1.3ms diff 12.2µs align 6144 pre 1.29ms on 1.31ms post 1.3ms diff 13.5µs align 4096 pre 1.3ms on 1.31ms post 1.3ms diff 9.87µs align 3072 pre 1.28ms on 1.31ms post 1.3ms diff 17.2µs align 2048 pre 1.3ms on 1.31ms post 1.31ms diff 4.48µs
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=$[1 * 1024 * 1024] --open-au --open-au-nr=1 --offset=$[4 * 1024 * 1024] 1MiB 5.14M/s 512KiB 4.52M/s 256KiB 4.5M/s 128KiB 4.47M/s 64KiB 5.27M/s 32KiB 4.35M/s 16KiB 4.09M/s 8KiB 4.02M/s 4KiB 3.4M/s 2KiB 2.22M/s 1KiB 1.67M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=$[1 * 1024 * 1024] --open-au --open-au-nr=4 --offset=$[4 * 1024 * 1024] 1MiB 5.27M/s 512KiB 4.25M/s 256KiB 2.78M/s 128KiB 2.29M/s 64KiB 1.28M/s 32KiB 684K/s 16KiB 425K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=$[1 * 1024 * 1024] --open-au --open-au-nr=2 --offset=$[4 * 1024 * 1024] 1MiB 5.24M/s 512KiB 3.78M/s 256KiB 3.04M/s 128KiB 2.1M/s 64KiB 1.16M/s 32KiB 746K/s 16KiB 583K/s 8KiB 254K/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=$[1 * 1024 * 1024] --open-au --open-au-nr=1 --offset=$[4 * 1024 * 1024] --random 1MiB 5.14M/s 512KiB 3.9M/s 256KiB 3.26M/s 128KiB 2.62M/s 64KiB 1.16M/s 32KiB 627K/s 16KiB 394K/s 8KiB 224K/s 4KiB 103K/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[128 * 1024] --open-au-nr=1 --open-au --offset=$[304 * 1024 + 0 * 1024] 128KiB 6.28M/s 64KiB 6.44M/s 32KiB 6.22M/s 16KiB 5.74M/s 8KiB 4.93M/s 4KiB 3.88M/s 2KiB 2.63M/s 1KiB 1.77M/s 512B 959K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[128 * 1024] --open-au-nr=1 --open-au --offset=$[304 * 1024 + 128 * 1024] 128KiB 6.09M/s 64KiB 6.48M/s 32KiB 6.18M/s 16KiB 5.71M/s 8KiB 5.05M/s 4KiB 3.87M/s 2KiB 2.63M/s 1KiB 1.78M/s 512B 944K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[128 * 1024] --open-au-nr=1 --open-au --offset=$[302 * 1024 + 128 * 1024] 128KiB 1.43M/s 64KiB 3.66M/s 32KiB 1.41M/s 16KiB 1.38M/s 8KiB 3.15M/s 4KiB 1.24M/s 2KiB 1.07M/s 1KiB 1.46M/s 512B 633K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[128 * 1024] --open-au-nr=1 --open-au --offset=$[306 * 1024 + 128 * 1024] 128KiB 6.13M/s 64KiB 1.42M/s 32KiB 3.57M/s 16KiB 1.38M/s 8KiB 1.33M/s 4KiB 2.66M/s 2KiB 1.07M/s 1KiB 893K/s 512B 863K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[128 * 1024] --open-au-nr=1 --open-au --offset=$[304 * 1024 + 128 * 1024] --random 128KiB 6.35M/s 64KiB 4.79M/s 32KiB 2.89M/s 16KiB 1.34M/s 8KiB 691K/s 4KiB 401K/s 2KiB 178K/s 1KiB 90.8K/s 512B 45K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[128 * 1024] --open-au-nr=2 --open-au --offset=$[304 * 1024] 128KiB 6.42M/s 64KiB 2.04M/s 32KiB 1.19M/s 16KiB 466K/s 8KiB 248K/s 4KiB 117K/s 2KiB 59.5K/s 1KiB 29K/s 512B 14.6K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[64 * 1024] --open-au-nr=1 --open-au --offset=$[304 * 1024] 64KiB 5.93M/s 32KiB 2.4M/s 16KiB 2.33M/s 8KiB 2.2M/s 4KiB 1.95M/s 2KiB 1.58M/s 1KiB 1.19M/s 512B 777K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=4096 --erasesize=$[128 * 1024] --open-au-nr=6 --findfat --fat-nr=9 128KiB 859K/s 1.03M/s 1.78M/s 6.47M/s 6.48M/s 6.47M/s 6.48M/s 6.47M/s 6.48M/s 64KiB 705K/s 815K/s 2.12M/s 6.47M/s 6.43M/s 6.47M/s 6.47M/s 6.43M/s 6.47M/s 32KiB 771K/s 812K/s 1.79M/s 6.24M/s 6.21M/s 6.21M/s 6.14M/s 6.24M/s 6.16M/s 16KiB 775K/s 812K/s 1.58M/s 4.77M/s 5.19M/s 4.61M/s 5.05M/s 5.71M/s 5.7M/s 8KiB 745K/s 785K/s 1.66M/s 5.02M/s 5.04M/s 5.02M/s 4.66M/s 5.02M/s 5.02M/s 4KiB 774K/s 758K/s 1.53M/s 3.87M/s 3.86M/s 3.87M/s 3.87M/s 3.82M/s 3.89M/s