== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:46:47 (1780976807)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.272777s, 30.7526MB/s
Read-ahead success for size 8192

0.213650s, 39.2633MB/s
Read-ahead success for size 16384

0.275847s, 30.4104MB/s
Read-ahead success for size 32768

0.338799s, 24.7598MB/s
Read-ahead success for size 65536

0.336447s, 24.9329MB/s
Read-ahead success for size 131072

0.379184s, 22.1228MB/s
Read-ahead success for size 262144

0.354209s, 23.6827MB/s
Read-ahead success for size 524288

0.470833s, 17.8165MB/s
Read-ahead success for size 1048576