== sanity test 101b: check stride-io mode read-ahead =========================================================================== 17:36:02 (1717018562)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

0.126711s, 66.2027MB/s
Read-ahead success for size 8192

0.153829s, 54.532MB/s
Read-ahead success for size 16384

0.144579s, 58.0209MB/s
Read-ahead success for size 32768

0.180507s, 46.4725MB/s
Read-ahead success for size 65536

0.139048s, 60.3289MB/s
Read-ahead success for size 131072

0.140307s, 59.7875MB/s
Read-ahead success for size 262144

0.119336s, 70.294MB/s
Read-ahead success for size 524288

0.120374s, 69.6879MB/s
Read-ahead success for size 1048576