== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:29:08 (1748982548)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.050330s, 166.672MB/s
Read-ahead success for size 8192

0.053082s, 158.031MB/s
Read-ahead success for size 16384

0.056817s, 147.643MB/s
Read-ahead success for size 32768

0.058597s, 143.158MB/s
Read-ahead success for size 65536

0.071136s, 117.924MB/s
Read-ahead success for size 131072

0.051664s, 162.369MB/s
Read-ahead success for size 262144

0.059605s, 140.737MB/s
Read-ahead success for size 524288

0.060508s, 138.636MB/s
Read-ahead success for size 1048576