== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:29:19 (1778362159)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

0.730890s, 11.4773MB/s
Read-ahead success for size 8192

0.725795s, 11.5578MB/s
Read-ahead success for size 16384

0.687484s, 12.2019MB/s
Read-ahead success for size 32768

0.615211s, 13.6353MB/s
Read-ahead success for size 65536

0.495233s, 16.9387MB/s
Read-ahead success for size 131072

0.486044s, 17.2589MB/s
Read-ahead success for size 262144

0.503798s, 16.6507MB/s
Read-ahead success for size 524288

0.438545s, 19.1283MB/s
Read-ahead success for size 1048576