== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:28:34 (1746145714)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.756295s, 11.0917MB/s
Read-ahead success for size 8192

0.689530s, 12.1657MB/s
Read-ahead success for size 16384

0.674066s, 12.4448MB/s
Read-ahead success for size 32768

0.582223s, 14.4079MB/s
Read-ahead success for size 65536

0.601511s, 13.9459MB/s
Read-ahead success for size 131072

0.518659s, 16.1736MB/s
Read-ahead success for size 262144

0.522755s, 16.0469MB/s
Read-ahead success for size 524288

0.460007s, 18.2358MB/s
Read-ahead success for size 1048576