== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:29:24 (1763350164)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

1.604806s, 5.22718MB/s
Read-ahead success for size 8192

1.514922s, 5.53732MB/s
Read-ahead success for size 16384

1.423235s, 5.89404MB/s
Read-ahead success for size 32768

1.680707s, 4.99112MB/s
Read-ahead success for size 65536

1.301126s, 6.44719MB/s
Read-ahead success for size 131072

1.215838s, 6.89945MB/s
Read-ahead success for size 262144

0.844906s, 9.92845MB/s
Read-ahead success for size 524288

1.340410s, 6.25824MB/s
Read-ahead success for size 1048576