== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:50:18 (1789318218)
striped dir -i1 -c2 -H crush  /mnt/lustre/d101b.sanity

0.534886s, 15.683MB/s
Read-ahead success for size 8192

0.532362s, 15.7573MB/s
Read-ahead success for size 16384

0.598076s, 14.026MB/s
Read-ahead success for size 32768

0.602830s, 13.9154MB/s
Read-ahead success for size 65536

0.482106s, 17.3999MB/s
Read-ahead success for size 131072

0.483545s, 17.3481MB/s
Read-ahead success for size 262144

0.467308s, 17.9509MB/s
Read-ahead success for size 524288

0.437335s, 19.1812MB/s
Read-ahead success for size 1048576