== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:21:06 (1788830466)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.015631s, 8.2595MB/s
Read-ahead success for size 8192

1.100159s, 7.62491MB/s
Read-ahead success for size 16384

1.382516s, 6.06764MB/s
Read-ahead success for size 32768

1.194361s, 7.02351MB/s
Read-ahead success for size 65536

0.957142s, 8.76423MB/s
Read-ahead success for size 131072

0.928129s, 9.03819MB/s
Read-ahead success for size 262144

0.993028s, 8.4475MB/s
Read-ahead success for size 524288

0.886700s, 9.46048MB/s
Read-ahead success for size 1048576