== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:27:13 (1744129633)
striped dir -i1 -c2 -H crush2 /mnt/lustre/d101b.sanity

0.376405s, 22.2861MB/s
Read-ahead success for size 8192

0.340169s, 24.6601MB/s
Read-ahead success for size 16384

0.368444s, 22.7677MB/s
Read-ahead success for size 32768

0.341028s, 24.598MB/s
Read-ahead success for size 65536

0.325141s, 25.7999MB/s
Read-ahead success for size 131072

0.295846s, 28.3546MB/s
Read-ahead success for size 262144

0.273809s, 30.6367MB/s
Read-ahead success for size 524288

0.257066s, 32.6321MB/s
Read-ahead success for size 1048576