== sanity test 101b: check stride-io mode read-ahead =========================================================================== 10:00:48 (1766415648)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.642327s, 5.10776MB/s
Read-ahead success for size 8192

1.432302s, 5.85673MB/s
Read-ahead success for size 16384

1.539256s, 5.44978MB/s
Read-ahead success for size 32768

1.368031s, 6.13188MB/s
Read-ahead success for size 65536

1.174227s, 7.14394MB/s
Read-ahead success for size 131072

1.202316s, 6.97704MB/s
Read-ahead success for size 262144

0.914283s, 9.17507MB/s
Read-ahead success for size 524288

0.762422s, 11.0026MB/s
Read-ahead success for size 1048576