== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:08:29 (1743455309)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.340668s, 24.624MB/s
Read-ahead success for size 8192

0.318195s, 26.3631MB/s
Read-ahead success for size 16384

0.410771s, 20.4216MB/s
Read-ahead success for size 32768

0.492336s, 17.0384MB/s
Read-ahead success for size 65536

0.431670s, 19.4329MB/s
Read-ahead success for size 131072

0.406839s, 20.619MB/s
Read-ahead success for size 262144

0.307303s, 27.2975MB/s
Read-ahead success for size 524288

0.320685s, 26.1584MB/s
Read-ahead success for size 1048576