== sanity test 101b: check stride-io mode read-ahead =========================================================================== 00:28:50 (1790742530)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.634617s, 5.13185MB/s
Read-ahead success for size 8192

1.334444s, 6.28622MB/s
Read-ahead success for size 16384

1.590913s, 5.27283MB/s
Read-ahead success for size 32768

1.267502s, 6.61822MB/s
Read-ahead success for size 65536

1.320657s, 6.35184MB/s
Read-ahead success for size 131072

1.330093s, 6.30678MB/s
Read-ahead success for size 262144

1.072828s, 7.81915MB/s
Read-ahead success for size 524288

1.122913s, 7.4704MB/s
Read-ahead success for size 1048576