== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:53:34 (1721408014)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.158554s, 52.9069MB/s
Read-ahead success for size 8192

0.117417s, 71.4429MB/s
Read-ahead success for size 16384

0.161992s, 51.7841MB/s
Read-ahead success for size 32768

0.134496s, 62.3707MB/s
Read-ahead success for size 65536

0.147035s, 57.0518MB/s
Read-ahead success for size 131072

0.133749s, 62.719MB/s
Read-ahead success for size 262144

0.134056s, 62.5754MB/s
Read-ahead success for size 524288

0.116050s, 72.2844MB/s
Read-ahead success for size 1048576