== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:06:22 (1772679982)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.722850s, 11.6049MB/s
Read-ahead success for size 8192

0.629203s, 13.3321MB/s
Read-ahead success for size 16384

0.664191s, 12.6298MB/s
Read-ahead success for size 32768

0.631528s, 13.283MB/s
Read-ahead success for size 65536

0.587410s, 14.2807MB/s
Read-ahead success for size 131072

0.500146s, 16.7723MB/s
Read-ahead success for size 262144

0.484244s, 17.3231MB/s
Read-ahead success for size 524288

0.473867s, 17.7025MB/s
Read-ahead success for size 1048576