== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:51:02 (1746132662)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

0.455480s, 18.4171MB/s
Read-ahead success for size 8192

0.499009s, 16.8105MB/s
Read-ahead success for size 16384

0.513718s, 16.3292MB/s
Read-ahead success for size 32768

0.428870s, 19.5598MB/s
Read-ahead success for size 65536

0.403137s, 20.8083MB/s
Read-ahead success for size 131072

0.419356s, 20.0035MB/s
Read-ahead success for size 262144

0.340492s, 24.6367MB/s
Read-ahead success for size 524288

0.334894s, 25.0485MB/s
Read-ahead success for size 1048576