== sanity test 101b: check stride-io mode read-ahead =========================================================================== 13:52:14 (1789581134)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

1.783571s, 4.70327MB/s
Read-ahead success for size 8192

1.377393s, 6.09021MB/s
Read-ahead success for size 16384

1.292807s, 6.48868MB/s
Read-ahead success for size 32768

1.329689s, 6.3087MB/s
Read-ahead success for size 65536

1.361687s, 6.16045MB/s
Read-ahead success for size 131072

1.379909s, 6.0791MB/s
Read-ahead success for size 262144

0.737805s, 11.3697MB/s
Read-ahead success for size 524288

1.136895s, 7.37852MB/s
Read-ahead success for size 1048576