== sanity test 101b: check stride-io mode read-ahead =========================================================================== 09:32:25 (1761312745)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.218765s, 38.3453MB/s
Read-ahead success for size 8192

0.311459s, 26.9333MB/s
Read-ahead success for size 16384

0.185555s, 45.2082MB/s
Read-ahead success for size 32768

0.234902s, 35.7111MB/s
Read-ahead success for size 65536

0.203698s, 41.1816MB/s
Read-ahead success for size 131072

0.224599s, 37.3493MB/s
Read-ahead success for size 262144

0.376405s, 22.2861MB/s
Read-ahead success for size 524288

0.181135s, 46.3114MB/s
Read-ahead success for size 1048576