== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:19:29 (1788542369)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.751272s, 4.79001MB/s
Read-ahead success for size 8192

1.817524s, 4.6154MB/s
Read-ahead success for size 16384

2.596151s, 3.23117MB/s
Read-ahead success for size 32768

1.880513s, 4.46081MB/s
Read-ahead success for size 65536

1.480769s, 5.66503MB/s
Read-ahead success for size 131072

1.386004s, 6.05237MB/s
Read-ahead success for size 262144

1.169708s, 7.17154MB/s
Read-ahead success for size 524288

1.177177s, 7.12604MB/s
Read-ahead success for size 1048576