== sanity test 101b: check stride-io mode read-ahead =========================================================================== 05:37:49 (1787737069)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

2.152814s, 3.89658MB/s
Read-ahead success for size 8192

1.390055s, 6.03473MB/s
Read-ahead success for size 16384

1.564706s, 5.36114MB/s
Read-ahead success for size 32768

1.313588s, 6.38603MB/s
Read-ahead success for size 65536

1.791504s, 4.68244MB/s
Read-ahead success for size 131072

1.627746s, 5.15351MB/s
Read-ahead success for size 262144

1.522957s, 5.50811MB/s
Read-ahead success for size 524288

2.201953s, 3.80962MB/s
Read-ahead success for size 1048576