hdparm notes
# hdparm -t /dev/sdb1
/dev/sdb1:
Timing buffered disk reads: 750 MB in 3.01 seconds = 249.58 MB/sec
# dd if=/dev/zero of=test bs=64k count=64k conv=fdatasync
# hdparm -t /dev/sdb1
/dev/sdb1:
Timing buffered disk reads: 750 MB in 3.01 seconds = 249.58 MB/sec
# dd if=/dev/zero of=test bs=64k count=64k conv=fdatasync