== sanity test 101b: check stride-io mode read-ahead =========================================================================== 22:08:42 (1781230122)
striped dir -i1 -c2 -H all_char  /mnt/lustre/d101b.sanity

0.776176s, 10.8076MB/s
Read-ahead success for size 8192

0.938782s, 8.93563MB/s
Read-ahead success for size 16384

0.871636s, 9.62398MB/s
Read-ahead success for size 32768

0.806033s, 10.4073MB/s
Read-ahead success for size 65536

0.734394s, 11.4225MB/s
Read-ahead success for size 131072

0.634568s, 13.2194MB/s
Read-ahead success for size 262144

0.524408s, 15.9963MB/s
Read-ahead success for size 524288

0.580554s, 14.4493MB/s
Read-ahead success for size 1048576