== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:37:15 (1772177835)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.491691s, 5.62356MB/s
Read-ahead success for size 8192

1.302368s, 6.44104MB/s
Read-ahead success for size 16384

1.382036s, 6.06975MB/s
Read-ahead success for size 32768

1.181340s, 7.10093MB/s
Read-ahead success for size 65536

0.815166s, 10.2907MB/s
Read-ahead success for size 131072

0.994805s, 8.43241MB/s
Read-ahead success for size 262144

0.684437s, 12.2562MB/s
Read-ahead success for size 524288

0.691613s, 12.129MB/s
Read-ahead success for size 1048576