== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:51:26 (1789134686)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.889873s, 4.43872MB/s
Read-ahead success for size 8192

2.263255s, 3.70644MB/s
Read-ahead success for size 16384

2.373385s, 3.53445MB/s
Read-ahead success for size 32768

1.951108s, 4.29941MB/s
Read-ahead success for size 65536

1.554318s, 5.39697MB/s
Read-ahead success for size 131072

1.730309s, 4.84804MB/s
Read-ahead success for size 262144

1.443658s, 5.81066MB/s
Read-ahead success for size 524288

1.149932s, 7.29487MB/s
Read-ahead success for size 1048576