== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:28:51 (1788654531)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.312831s, 6.38971MB/s
Read-ahead success for size 8192

1.344728s, 6.23814MB/s
Read-ahead success for size 16384

1.713243s, 4.89633MB/s
Read-ahead success for size 32768

1.171148s, 7.16272MB/s
Read-ahead success for size 65536

1.126039s, 7.44966MB/s
Read-ahead success for size 131072

1.599211s, 5.24547MB/s
Read-ahead success for size 262144

0.911135s, 9.20677MB/s
Read-ahead success for size 524288

1.316743s, 6.37073MB/s
Read-ahead success for size 1048576