== sanity test 101b: check stride-io mode read-ahead =========================================================================== 07:18:51 (1740485931)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.377013s, 22.2502MB/s
Read-ahead success for size 8192

0.382902s, 21.908MB/s
Read-ahead success for size 16384

0.372861s, 22.4979MB/s
Read-ahead success for size 32768

0.375412s, 22.3451MB/s
Read-ahead success for size 65536

0.326067s, 25.7266MB/s
Read-ahead success for size 131072

0.325469s, 25.7739MB/s
Read-ahead success for size 262144

0.266601s, 31.465MB/s
Read-ahead success for size 524288

0.251857s, 33.307MB/s
Read-ahead success for size 1048576