# time badblocks -w -t 0x00 /dev/sdb3
real 1m58.691s
user 0m17.671s
sys 0m6.318s
# time badblocks -b 4096 -w -t 0x00 /dev/sdb3
real 1m47.225s
user 0m16.859s
sys 0m3.272s
# time badblocks -c 256 -w -t 0x00 /dev/sdb3
real 1m50.223s
user 0m16.102s
sys 0m3.283s
Using a larger blocksize, or larger number of blocks speeds up the test by
about 10%. Going larger than that had little effect of time, but reduced
cpu usage a bit.
-Ariel
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