== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:06:17 (1747400777)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.055705s, 150.59MB/s
Read-ahead success for size 8192

0.059118s, 141.896MB/s
Read-ahead success for size 16384

0.056231s, 149.181MB/s
Read-ahead success for size 32768

0.060810s, 137.948MB/s
Read-ahead success for size 65536

0.055770s, 150.414MB/s
Read-ahead success for size 131072

0.061654s, 136.059MB/s
Read-ahead success for size 262144

0.065464s, 128.141MB/s
Read-ahead success for size 524288

0.071923s, 116.633MB/s
Read-ahead success for size 1048576