== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:23:24 (1786811004)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.193862s, 7.02645MB/s
Read-ahead success for size 8192

1.227531s, 6.83372MB/s
Read-ahead success for size 16384

1.567938s, 5.35009MB/s
Read-ahead success for size 32768

1.407964s, 5.95797MB/s
Read-ahead success for size 65536

1.204880s, 6.96219MB/s
Read-ahead success for size 131072

1.203336s, 6.97113MB/s
Read-ahead success for size 262144

1.076016s, 7.79599MB/s
Read-ahead success for size 524288

1.022762s, 8.20192MB/s
Read-ahead success for size 1048576