== sanity test 101b: check stride-io mode read-ahead =========================================================================== 15:23:49 (1775849029)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.688215s, 4.96892MB/s
Read-ahead success for size 8192

1.653378s, 5.07362MB/s
Read-ahead success for size 16384

2.100028s, 3.99452MB/s
Read-ahead success for size 32768

1.975976s, 4.2453MB/s
Read-ahead success for size 65536

1.707634s, 4.91242MB/s
Read-ahead success for size 131072

1.718386s, 4.88168MB/s
Read-ahead success for size 262144

1.188784s, 7.05646MB/s
Read-ahead success for size 524288

1.419747s, 5.90852MB/s
Read-ahead success for size 1048576