/data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p9/start 643072 /data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p9/size 346112 /data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p6/start 77824 /data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p6/size 24576 # ./flashbench -a -b 1024 /dev/block/mmcblk0p6 align 524288 pre 613µs on 801µs post 570µs diff 210µs align 262144 pre 739µs on 988µs post 767µs diff 235µs align 131072 pre 740µs on 990µs post 767µs diff 236µs align 65536 pre 749µs on 998µs post 767µs diff 240µs align 32768 pre 761µs on 992µs post 746µs diff 238µs align 16384 pre 755µs on 982µs post 755µs diff 227µs align 8192 pre 748µs on 750µs post 748µs diff 1.94µs align 4096 pre 747µs on 749µs post 747µs diff 1.41µs align 2048 pre 747µs on 747µs post 748µs diff -93ns # ./flashbench -a -b 1024 /dev/block/mmcblk0p9 align 8388608 pre 527µs on 743µs post 476µs diff 242µs align 4194304 pre 544µs on 730µs post 543µs diff 187µs align 2097152 pre 551µs on 714µs post 485µs diff 196µs align 1048576 pre 742µs on 864µs post 745µs diff 120µs align 524288 pre 760µs on 822µs post 789µs diff 47.9µs align 262144 pre 760µs on 816µs post 789µs diff 42µs align 131072 pre 760µs on 822µs post 789µs diff 47.8µs align 65536 pre 758µs on 821µs post 789µs diff 48µs align 32768 pre 771µs on 828µs post 760µs diff 62.7µs align 16384 pre 672µs on 939µs post 771µs diff 217µs align 8192 pre 668µs on 806µs post 671µs diff 136µs align 4096 pre 671µs on 672µs post 670µs diff 1.5µs align 2048 pre 671µs on 670µs post 671µs diff -859ns # ./flashbench -A -b 1024 /dev/block/mmcblk0p6 write align 524288 pre 3.59ms on 6.74ms post 3.73ms diff 3.08ms write align 262144 pre 3.69ms on 7.11ms post 3.69ms diff 3.42ms write align 131072 pre 3.71ms on 17.4ms post 3.72ms diff 13.7ms write align 65536 pre 3.72ms on 7.18ms post 3.52ms diff 3.56ms write align 32768 pre 3.73ms on 11.9ms post 3.7ms diff 8.24ms write align 16384 pre 3.93ms on 5.01ms post 4.6ms diff 745µs write align 8192 pre 4.9ms on 4.89ms post 4.87ms diff 4.77µs write align 4096 pre 5.03ms on 5.02ms post 5.01ms diff -437ns write align 2048 pre 5.08ms on 5.08ms post 5.06ms diff 12.3µs # ./flashbench -A -b 1024 /dev/block/mmcblk0p9 write align 8388608 pre 3.76ms on 7.07ms post 4.05ms diff 3.16ms write align 4194304 pre 3.62ms on 6.5ms post 3.63ms diff 2.88ms write align 2097152 pre 3.91ms on 6.84ms post 3.7ms diff 3.04ms write align 1048576 pre 3.88ms on 6.96ms post 3.96ms diff 3.04ms write align 524288 pre 3.93ms on 7.07ms post 4.05ms diff 3.08ms write align 262144 pre 3.94ms on 7.07ms post 4.05ms diff 3.07ms write align 131072 pre 3.95ms on 7.05ms post 4.05ms diff 3.05ms write align 65536 pre 3.94ms on 7.07ms post 4.05ms diff 3.07ms write align 32768 pre 3.95ms on 7.07ms post 4.04ms diff 3.07ms write align 16384 pre 4.48ms on 117ms post 3.81ms diff 113ms write align 8192 pre 3.61ms on 114ms post 3.58ms diff 110ms write align 4096 pre 3.88ms on 3.87ms post 3.86ms diff 1.87µs write align 2048 pre 3.88ms on 3.89ms post 3.89ms diff 3.11µs ./flashbench -O -0 1 -b 512 /dev/block/mmcblk0p6 4MiB 7.17M/s 2MiB 7.91M/s 1MiB 9.23M/s 512KiB 10.3M/s 256KiB 10.5M/s 128KiB 10.4M/s 64KiB 9.81M/s 32KiB 9.09M/s 16KiB 3.71M/s 8KiB 1.73M/s 4KiB 845K/s 2KiB 418K/s 1KiB 208K/s 512B 103K/s ./flashbench -O -0 1 -r -b 512 /dev/block/mmcblk0p6 4MiB 6.58M/s 2MiB 7.98M/s 1MiB 9.33M/s 512KiB 10.4M/s 256KiB 10.9M/s 128KiB 10.5M/s 64KiB 9.94M/s 32KiB 9.11M/s 16KiB 3.72M/s 8KiB 1.75M/s 4KiB 853K/s 2KiB 419K/s 1KiB 207K/s 512B 102K/s ./flashbench -O -0 2 -b 512 /dev/block/mmcblk0p6 4MiB 8.95M/s 2MiB 9.44M/s 1MiB 10.3M/s 512KiB 10.9M/s 256KiB 10.8M/s 128KiB 10.5M/s 64KiB 9.91M/s 32KiB 8.79M/s 16KiB 3.65M/s 8KiB 1.75M/s 4KiB 851K/s 2KiB 419K/s 1KiB 208K/s 512B 103K/s ./flashbench -O -0 2 -r -b 512 /dev/block/mmcblk0p6 4MiB 9.06M/s 2MiB 9.68M/s 1MiB 10.3M/s 512KiB 10.5M/s 256KiB 9.94M/s 128KiB 10.1M/s 64KiB 9.41M/s 32KiB 7.99M/s 16KiB 3.5M/s 8KiB 1.64M/s 4KiB 798K/s 2KiB 393K/s 1KiB 196K/s 512B 96.5K/s ./flashbench -O -0 3 -b 512 /dev/block/mmcblk0p6 4MiB 8.07M/s 2MiB 9.07M/s 1MiB 9.88M/s 512KiB 10.1M/s 256KiB 10M/s 128KiB 9.83M/s 64KiB 8.68M/s 32KiB 7.1M/s 16KiB 3.09M/s 8KiB 1.49M/s 4KiB 726K/s 2KiB 357K/s 1KiB 178K/s 512B 88.5K/s ./flashbench -O -0 3 -r -b 512 /dev/block/mmcblk0p6 4MiB 8.12M/s 2MiB 9.28M/s 1MiB 9.83M/s 512KiB 10M/s 256KiB 9.97M/s 128KiB 9.91M/s 64KiB 8.9M/s 32KiB 7.3M/s 16KiB 3.2M/s 8KiB 1.54M/s 4KiB 751K/s 2KiB 367K/s 1KiB 183K/s 512B 90.3K/s ./flashbench -O -0 4 -b 512 /dev/block/mmcblk0p6 4MiB 5.87M/s 2MiB 8.71M/s 1MiB 9.11M/s 512KiB 10.3M/s 256KiB 10.5M/s 128KiB 10M/s 64KiB 9.09M/s 32KiB 7.5M/s 16KiB 3.28M/s 8KiB 1.56M/s 4KiB 758K/s 2KiB 372K/s 1KiB 185K/s 512B 92.3K/s ./flashbench -O -0 4 -r -b 512 /dev/block/mmcblk0p6 4MiB 7.57M/s 2MiB 7.23M/s 1MiB 9.71M/s 512KiB 10M/s 256KiB 9.98M/s 128KiB 9.82M/s 64KiB 9.07M/s 32KiB 7.62M/s 16KiB 3.34M/s 8KiB 1.58M/s 4KiB 776K/s 2KiB 379K/s 1KiB 188K/s 512B 92.7K/s