== sanity test 101b: check stride-io mode read-ahead =========================================================================== 02:38:24 (1788331104)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.967095s, 4.26447MB/s
Read-ahead success for size 8192

2.055932s, 4.0802MB/s
Read-ahead success for size 16384

2.478468s, 3.38459MB/s
Read-ahead success for size 32768

2.151531s, 3.8989MB/s
Read-ahead success for size 65536

1.921200s, 4.36634MB/s
Read-ahead success for size 131072

2.043278s, 4.10547MB/s
Read-ahead success for size 262144

1.428053s, 5.87416MB/s
Read-ahead success for size 524288

1.657065s, 5.06233MB/s
Read-ahead success for size 1048576