== sanity test 101b: check stride-io mode read-ahead =========================================================================== 19:07:16 (1736986036)
striped dir -i1 -c2 -H crush /mnt/lustre/d101b.sanity

0.064644s, 129.766MB/s
Read-ahead success for size 8192

0.056327s, 148.927MB/s
Read-ahead success for size 16384

0.055126s, 152.172MB/s
Read-ahead success for size 32768

0.057546s, 145.772MB/s
Read-ahead success for size 65536

0.055672s, 150.679MB/s
Read-ahead success for size 131072

0.063924s, 131.228MB/s
Read-ahead success for size 262144

0.064098s, 130.872MB/s
Read-ahead success for size 524288

0.060559s, 138.52MB/s
Read-ahead success for size 1048576