== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:27:39 (1744129659)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.406847s, 20.6186MB/s
Read-ahead success for size 8192

0.397095s, 21.1249MB/s
Read-ahead success for size 16384

0.411911s, 20.3651MB/s
Read-ahead success for size 32768

0.363888s, 23.0527MB/s
Read-ahead success for size 65536

0.345402s, 24.2865MB/s
Read-ahead success for size 131072

0.322107s, 26.0429MB/s
Read-ahead success for size 262144

0.279751s, 29.986MB/s
Read-ahead success for size 524288

0.288646s, 29.0619MB/s
Read-ahead success for size 1048576