== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:16:14 (1755638174)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.592742s, 14.1522MB/s
Read-ahead success for size 8192

0.624957s, 13.4227MB/s
Read-ahead success for size 16384

0.617535s, 13.584MB/s
Read-ahead success for size 32768

0.575862s, 14.567MB/s
Read-ahead success for size 65536

0.627987s, 13.3579MB/s
Read-ahead success for size 131072

0.634140s, 13.2283MB/s
Read-ahead success for size 262144

0.538217s, 15.5859MB/s
Read-ahead success for size 524288

0.482506s, 17.3855MB/s
Read-ahead success for size 1048576