== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:27:07 (1787866027)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.620931s, 5.17518MB/s
Read-ahead success for size 8192

1.615961s, 5.1911MB/s
Read-ahead success for size 16384

1.651749s, 5.07862MB/s
Read-ahead success for size 32768

1.516555s, 5.53136MB/s
Read-ahead success for size 65536

1.356871s, 6.18232MB/s
Read-ahead success for size 131072

1.163005s, 7.21287MB/s
Read-ahead success for size 262144

1.156499s, 7.25345MB/s
Read-ahead success for size 524288

1.186707s, 7.06881MB/s
Read-ahead success for size 1048576