== sanity test 101b: check stride-io mode read-ahead =========================================================================== 06:32:18 (1778841138)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

0.898885s, 9.33224MB/s
Read-ahead success for size 8192

1.177409s, 7.12463MB/s
Read-ahead success for size 16384

1.055307s, 7.94897MB/s
Read-ahead success for size 32768

0.926638s, 9.05273MB/s
Read-ahead success for size 65536

0.916727s, 9.15061MB/s
Read-ahead success for size 131072

0.918050s, 9.13742MB/s
Read-ahead success for size 262144

0.771658s, 10.8709MB/s
Read-ahead success for size 524288

0.650991s, 12.8859MB/s
Read-ahead success for size 1048576