== sanity test 101b: check stride-io mode read-ahead =========================================================================== 21:56:06 (1788832566)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

1.992753s, 4.20956MB/s
Read-ahead success for size 8192

1.618188s, 5.18395MB/s
Read-ahead success for size 16384

1.926600s, 4.3541MB/s
Read-ahead success for size 32768

1.800822s, 4.65821MB/s
Read-ahead success for size 65536

1.680430s, 4.99194MB/s
Read-ahead success for size 131072

1.667773s, 5.02983MB/s
Read-ahead success for size 262144

1.312445s, 6.39159MB/s
Read-ahead success for size 524288

1.237311s, 6.77971MB/s
Read-ahead success for size 1048576