== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:24:38 (1786757078)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.181381s, 7.10068MB/s
Read-ahead success for size 8192

1.499558s, 5.59405MB/s
Read-ahead success for size 16384

2.597802s, 3.22912MB/s
Read-ahead success for size 32768

2.727540s, 3.07552MB/s
Read-ahead success for size 65536

1.615918s, 5.19123MB/s
Read-ahead success for size 131072

1.668752s, 5.02688MB/s
Read-ahead success for size 262144

1.101556s, 7.61524MB/s
Read-ahead success for size 524288

1.793529s, 4.67715MB/s
Read-ahead success for size 1048576