== sanity test 101b: check stride-io mode read-ahead =========================================================================== 06:47:30 (1775126850)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.586800s, 5.28649MB/s
Read-ahead success for size 8192

1.558897s, 5.38112MB/s
Read-ahead success for size 16384

1.842926s, 4.55179MB/s
Read-ahead success for size 32768

1.620235s, 5.1774MB/s
Read-ahead success for size 65536

1.482466s, 5.65855MB/s
Read-ahead success for size 131072

0.956436s, 8.77069MB/s
Read-ahead success for size 262144

1.139323s, 7.3628MB/s
Read-ahead success for size 524288

0.832657s, 10.0745MB/s
Read-ahead success for size 1048576