== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:43:40 (1780087420)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

0.567569s, 14.7799MB/s
Read-ahead success for size 8192

0.639464s, 13.1182MB/s
Read-ahead success for size 16384

0.702343s, 11.9437MB/s
Read-ahead success for size 32768

0.658977s, 12.7297MB/s
Read-ahead success for size 65536

0.544102s, 15.4173MB/s
Read-ahead success for size 131072

0.559168s, 15.0019MB/s
Read-ahead success for size 262144

0.543392s, 15.4375MB/s
Read-ahead success for size 524288

0.517712s, 16.2032MB/s
Read-ahead success for size 1048576