== sanity test 101b: check stride-io mode read-ahead =========================================================================== 12:35:50 (1709055350)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.587859s, 14.2698MB/s
Read-ahead success for size 8192

0.517567s, 16.2078MB/s
Read-ahead success for size 16384

0.534607s, 15.6912MB/s
Read-ahead success for size 32768

0.544501s, 15.406MB/s
Read-ahead success for size 65536

0.461679s, 18.1698MB/s
Read-ahead success for size 131072

0.526528s, 15.9319MB/s
Read-ahead success for size 262144

0.555167s, 15.1101MB/s
Read-ahead success for size 524288

0.715659s, 11.7215MB/s
Read-ahead success for size 1048576