== sanity test 101b: check stride-io mode read-ahead =========================================================================== 23:27:48 (1789183668)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.624788s, 5.16289MB/s
Read-ahead success for size 8192

1.921943s, 4.36465MB/s
Read-ahead success for size 16384

2.132093s, 3.93445MB/s
Read-ahead success for size 32768

1.831003s, 4.58143MB/s
Read-ahead success for size 65536

1.406512s, 5.96412MB/s
Read-ahead success for size 131072

0.947151s, 8.85667MB/s
Read-ahead success for size 262144

1.332364s, 6.29603MB/s
Read-ahead success for size 524288

1.280329s, 6.55192MB/s
Read-ahead success for size 1048576