== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:30:16 (1768548616)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

1.309978s, 6.40363MB/s
Read-ahead success for size 8192

1.515482s, 5.53527MB/s
Read-ahead success for size 16384

1.378050s, 6.0873MB/s
Read-ahead success for size 32768

1.350320s, 6.21231MB/s
Read-ahead success for size 65536

1.616485s, 5.18941MB/s
Read-ahead success for size 131072

1.052340s, 7.97139MB/s
Read-ahead success for size 262144

0.973180s, 8.61979MB/s
Read-ahead success for size 524288

0.781527s, 10.7336MB/s
Read-ahead success for size 1048576