== sanity test 101b: check stride-io mode read-ahead =========================================================================== 14:57:53 (1787857073)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

2.354324s, 3.56306MB/s
Read-ahead success for size 8192

2.063373s, 4.06548MB/s
Read-ahead success for size 16384

1.893779s, 4.42956MB/s
Read-ahead success for size 32768

1.666984s, 5.03221MB/s
Read-ahead success for size 65536

1.754175s, 4.78208MB/s
Read-ahead success for size 131072

1.413104s, 5.9363MB/s
Read-ahead success for size 262144

0.838622s, 10.0028MB/s
Read-ahead success for size 524288

1.189247s, 7.05371MB/s
Read-ahead success for size 1048576