/data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p9/start
647168
/data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p9/size 
346112
/data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p6/start
81920
/data # cat /sys/block/mmcblk0/device/block/mmcblk0/mmcblk0p6/size
24576
/data # ./flashbench -a -b 1024 /dev/block/mmcblk0p6
align 524288	pre 1.01ms	on 1.03ms	post 858µs	diff 93.5µs
align 262144	pre 1.16ms	on 1.2ms	post 926µs	diff 153µs
align 131072	pre 1.16ms	on 1.2ms	post 924µs	diff 151µs
align 65536	pre 1.15ms	on 1.12ms	post 919µs	diff 84.9µs
align 32768	pre 1.16ms	on 1.2ms	post 923µs	diff 154µs
align 16384	pre 1.16ms	on 1.21ms	post 941µs	diff 162µs
align 8192	pre 1.15ms	on 1.09ms	post 874µs	diff 80.2µs
align 4096	pre 1.16ms	on 1.17ms	post 902µs	diff 138µs
align 2048	pre 1.16ms	on 1.17ms	post 903µs	diff 135µs
/data # ./flashbench -a -b 1024 /dev/block/mmcblk0p9
align 8388608	pre 1.07ms	on 1.1ms	post 933µs	diff 92.9µs
align 4194304	pre 1.28ms	on 1.29ms	post 1.05ms	diff 129µs
align 2097152	pre 1.28ms	on 1.31ms	post 1.07ms	diff 132µs
align 1048576	pre 1.27ms	on 1.32ms	post 1.07ms	diff 147µs
align 524288	pre 1.38ms	on 1.38ms	post 1.12ms	diff 135µs
align 262144	pre 1.27ms	on 1.3ms	post 1.04ms	diff 140µs
align 131072	pre 1.28ms	on 1.31ms	post 1.02ms	diff 164µs
align 65536	pre 1.38ms	on 1.38ms	post 1.12ms	diff 135µs
align 32768	pre 1.38ms	on 1.38ms	post 1.12ms	diff 134µs
align 16384	pre 1.38ms	on 1.38ms	post 1.11ms	diff 135µs
align 8192	pre 1.38ms	on 1.38ms	post 1.11ms	diff 134µs
align 4096	pre 1.38ms	on 1.38ms	post 1.11ms	diff 136µs
align 2048	pre 1.38ms	on 1.38ms	post 1.11ms	diff 134µs
/data # ./flashbench -A -b 1024 /dev/block/mmcblk0p6
write align 524288	pre 1.69ms	on 2.38ms	post 1.78ms	diff 653µs
write align 262144	pre 1.87ms	on 2.59ms	post 1.86ms	diff 723µs
write align 131072	pre 1.88ms	on 2.61ms	post 1.89ms	diff 729µs
write align 65536	pre 1.86ms	on 2.65ms	post 1.83ms	diff 805µs
write align 32768	pre 1.88ms	on 2.61ms	post 1.92ms	diff 710µs
write align 16384	pre 1.8ms	on 2.57ms	post 1.95ms	diff 701µs
write align 8192	pre 1.66ms	on 1.71ms	post 1.64ms	diff 55µs
write align 4096	pre 1.67ms	on 1.71ms	post 1.64ms	diff 51.9µs
write align 2048	pre 1.67ms	on 1.71ms	post 1.61ms	diff 68.7µs
/data # ./flashbench -A -b 1024 /dev/block/mmcblk0p9
write align 8388608	pre 1.83ms	on 2.62ms	post 1.91ms	diff 750µs
write align 4194304	pre 1.89ms	on 2.87ms	post 2.06ms	diff 892µs
write align 2097152	pre 2.08ms	on 2.86ms	post 2.13ms	diff 751µs
write align 1048576	pre 2.06ms	on 2.93ms	post 2.17ms	diff 818µs
write align 524288	pre 2.07ms	on 2.85ms	post 2.18ms	diff 724µs
write align 262144	pre 2.07ms	on 2.85ms	post 2.15ms	diff 741µs
write align 131072	pre 2.05ms	on 2.93ms	post 2.19ms	diff 809µs
write align 65536	pre 1.86ms	on 2.77ms	post 1.9ms	diff 888µs
write align 32768	pre 2.06ms	on 2.91ms	post 2.19ms	diff 783µs
write align 16384	pre 2.05ms	on 2.76ms	post 1.8ms	diff 835µs
write align 8192	pre 1.83ms	on 1.89ms	post 1.8ms	diff 72.9µs
write align 4096	pre 1.84ms	on 1.9ms	post 1.8ms	diff 75µs
write align 2048	pre 1.84ms	on 1.89ms	post 1.8ms	diff 70.8µs
/data # ./flashbench -O -0 1 -b 512 /dev/block/mmcblk0p6 
4MiB    10.5M/s 
2MiB    10.1M/s 
1MiB    10.6M/s 
512KiB  10.5M/s 
256KiB  8.94M/s 
128KiB  7.74M/s 
64KiB   6.04M/s 
32KiB   4.13M/s 
16KiB   3.2M/s  
8KiB    3.87M/s 
4KiB    1.86M/s 
2KiB    1.16M/s 
1KiB    667K/s  
512B    396K/s  
/data # ./flashbench -O -0 1 -r  -b 512 /dev/block/mmcblk0p6 
4MiB    10.7M/s 
2MiB    10.3M/s 
1MiB    10.4M/s 
512KiB  16.3M/s 
256KiB  16.6M/s 
128KiB  16.1M/s 
64KiB   14M/s   
32KiB   11.1M/s 
16KiB   6.77M/s 
8KiB    3.15M/s 
4KiB    1.77M/s 
2KiB    1.01M/s 
1KiB    523K/s  
512B    296K/s  
/data # ./flashbench -O -0 2  -b 512 /dev/block/mmcblk0p6    
4MiB    11.5M/s 
2MiB    11.3M/s 
1MiB    11.5M/s 
512KiB  11.6M/s 
256KiB  10.8M/s 
128KiB  9.84M/s 
64KiB   7.88M/s 
32KiB   5.65M/s 
16KiB   4.14M/s 
8KiB    1.99M/s 
4KiB    1.42M/s 
2KiB    760K/s  
1KiB    392K/s  
512B    213K/s  
/data # ./flashbench -O -0 2 -r   -b 512 /dev/block/mmcblk0p6 
4MiB    10.3M/s 
2MiB    10.2M/s 
1MiB    10.1M/s 
512KiB  16M/s   
256KiB  15.8M/s 
128KiB  14.6M/s 
64KiB   11.4M/s 
32KiB   8.07M/s 
16KiB   5.12M/s 
8KiB    2.65M/s 
4KiB    1.43M/s 
2KiB    768K/s  
1KiB    395K/s  
512B    212K/s  
/data # ./flashbench -O -0 3    -b 512 /dev/block/mmcblk0p6   
4MiB    11.3M/s 
2MiB    11.5M/s 
1MiB    11.5M/s 
512KiB  11.5M/s 
256KiB  10.4M/s 
128KiB  9.1M/s  
64KiB   7.3M/s  
32KiB   5.21M/s 
16KiB   3.78M/s 
8KiB    2.08M/s 
4KiB    1.42M/s 
2KiB    792K/s  
1KiB    418K/s  
512B    217K/s 
/data/flashbench -O -0 3 -r  -b 512 /dev/block/mmcblk0p6
4MiB    10.7M/s 
2MiB    10.5M/s 
1MiB    10.2M/s 
512KiB  17.3M/s 
256KiB  16.3M/s 
128KiB  14.5M/s 
64KiB   11.4M/s 
32KiB   8.12M/s 
16KiB   4.98M/s 
8KiB    2.62M/s 
4KiB    1.4M/s  
2KiB    768K/s  
1KiB    390K/s  
512B    212K/s  
./flashbench -O -0 4 -b 512 /dev/block/mmcblk0p6
4MiB    14.4M/s 
2MiB    14M/s   
1MiB    13.9M/s 
512KiB  14.2M/s 
256KiB  13.5M/s 
128KiB  11.9M/s 
64KiB   9.8M/s  
32KiB   7.35M/s 
16KiB   5.1M/s  
8KiB    2.69M/s 
4KiB    1.58M/s 
2KiB    877K/s  
1KiB    476K/s  
512B    268K/s  
./flashbench -O -0 4 -r -b 512 /dev/block/mmcblk0p6
4MiB    10.4M/s 
2MiB    10.5M/s 
1MiB    14.3M/s 
512KiB  17.7M/s 
256KiB  16.9M/s 
128KiB  15.5M/s 
64KiB   12.4M/s 
32KiB   9.36M/s 
16KiB   5.62M/s 
8KiB    3M/s    
4KiB    1.62M/s 
2KiB    880K/s  
1KiB    462K/s  
512B    261K/s