== sanity test 101b: check stride-io mode read-ahead =========================================================================== 19:20:18 (1755040818)
striped dir -i1 -c2 -H fnv_1a_64 /mnt/lustre/d101b.sanity

0.512166s, 16.3787MB/s
Read-ahead success for size 8192

0.494879s, 16.9508MB/s
Read-ahead success for size 16384

0.601015s, 13.9574MB/s
Read-ahead success for size 32768

0.597442s, 14.0409MB/s
Read-ahead success for size 65536

0.531674s, 15.7777MB/s
Read-ahead success for size 131072

0.495767s, 16.9205MB/s
Read-ahead success for size 262144

0.445091s, 18.847MB/s
Read-ahead success for size 524288

0.430865s, 19.4692MB/s
Read-ahead success for size 1048576