== sanity test 101b: check stride-io mode read-ahead =========================================================================== 18:02:56 (1746136976)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.723378s, 11.5964MB/s
Read-ahead success for size 8192

0.719090s, 11.6656MB/s
Read-ahead success for size 16384

0.821510s, 10.2112MB/s
Read-ahead success for size 32768

0.702418s, 11.9425MB/s
Read-ahead success for size 65536

0.603285s, 13.9049MB/s
Read-ahead success for size 131072

0.476209s, 17.6154MB/s
Read-ahead success for size 262144

0.498354s, 16.8326MB/s
Read-ahead success for size 524288

0.415770s, 20.1761MB/s
Read-ahead success for size 1048576