== sanity test 101b: check stride-io mode read-ahead =========================================================================== 10:23:52 (1784125432)
striped dir -i1 -c2 -H crush2  /mnt/lustre/d101b.sanity

0.810491s, 10.35MB/s
Read-ahead success for size 8192

0.968437s, 8.66201MB/s
Read-ahead success for size 16384

1.043885s, 8.03595MB/s
Read-ahead success for size 32768

0.986248s, 8.50558MB/s
Read-ahead success for size 65536

0.915375s, 9.16412MB/s
Read-ahead success for size 131072

0.761594s, 11.0145MB/s
Read-ahead success for size 262144

0.668873s, 12.5414MB/s
Read-ahead success for size 524288

0.626516s, 13.3893MB/s
Read-ahead success for size 1048576