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The README for flashbench shows numbers that only descend. Can someone help me decode the following alignment results? Perhaps the README could be updated, too?

root@spot-372b21:/var/volatile/media/sda1# ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=100 align 2147483648 pre 1.82ms on 2.74ms post 2.1ms diff 784µs align 1073741824 pre 1.79ms on 2.68ms post 2.05ms diff 757µs align 536870912 pre 1.78ms on 2.67ms post 2.05ms diff 755µs align 268435456 pre 1.79ms on 2.66ms post 2.04ms diff 749µs align 134217728 pre 1.79ms on 2.67ms post 2.04ms diff 753µs align 67108864 pre 1.78ms on 2.66ms post 2.05ms diff 750µs align 33554432 pre 1.79ms on 3.38ms post 2.19ms diff 1.39ms align 16777216 pre 1.84ms on 3.56ms post 2.19ms diff 1.54ms align 8388608 pre 1.85ms on 2.73ms post 2.04ms diff 786µs align 4194304 pre 1.84ms on 3.56ms post 2.2ms diff 1.54ms align 2097152 pre 1.83ms on 2.69ms post 2.26ms diff 648µs align 1048576 pre 1.81ms on 2.85ms post 2.24ms diff 826µs align 524288 pre 1.83ms on 2.95ms post 2.24ms diff 920µs align 262144 pre 1.87ms on 2.18ms post 2.18ms diff 162µs align 131072 pre 1.89ms on 2.2ms post 2.2ms diff 161µs align 65536 pre 1.9ms on 2.21ms post 2.21ms diff 160µs align 32768 pre 1.91ms on 2.21ms post 2.18ms diff 160µs align 16384 pre 1.92ms on 2.22ms post 2.19ms diff 168µs align 8192 pre 1.92ms on 2.22ms post 2.19ms diff 168µs align 4096 pre 2.08ms on 2.08ms post 2.04ms diff 19.5µs align 2048 pre 2.15ms on 2.15ms post 2.11ms diff 18.1µs root@spot-372b21:/var/volatile/media/sda1# find /sys/block/mmcblk0/device/ -maxdepth 1 -type f | xargs head ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD8GB MODALIAS=mmc:block

==> /sys/block/mmcblk0/device/cid <== 4134325344384742300030018f00b367

==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b777f800a40009f

==> /sys/block/mmcblk0/device/scr <== 0235800000000000

==> /sys/block/mmcblk0/device/date <== 03/2011

==> /sys/block/mmcblk0/device/fwrev <== 0x0

==> /sys/block/mmcblk0/device/hwrev <== 0x3

==> /sys/block/mmcblk0/device/manfid <== 0x000041

==> /sys/block/mmcblk0/device/name <== SD8GB

==> /sys/block/mmcblk0/device/oemid <== 0x3432

==> /sys/block/mmcblk0/device/serial <== 0x0030018f

==> /sys/block/mmcblk0/device/type <== SD root@spot-372b21:/var/volatile/media/sda1#