== sanity test 248c: verify whole file read behavior ===== 02:39:55 (1775198395)
llite.lustre-ffff89dad11e2800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff89dad11e2800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.71751 seconds
llite.lustre-ffff89dad11e2800.read_ahead_stats=
snapshot_time             1775198405.108371699 secs.nsecs
start_time                1775198397.590521670 secs.nsecs
elapsed_time              7.517850029 secs.nsecs
hits                      16382 samples [pages]
misses                    2 samples [pages]
zero_size_window          1 samples [pages]
failed_to_fast_read       3 samples [pages]
readahead_pages           1 samples [pages] 16382 16382 16382
llite.lustre-ffff89dad11e2800.read_ahead_stats=clear
llite.lustre-ffff89dad11e2800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.63478 seconds
llite.lustre-ffff89dad11e2800.read_ahead_stats=
snapshot_time             1775198415.357308890 secs.nsecs
start_time                1775198405.145229375 secs.nsecs
elapsed_time              10.212079515 secs.nsecs
hits                      16382 samples [pages]
misses                    2 samples [pages]
zero_size_window          1 samples [pages]
failed_to_fast_read       3 samples [pages]
readahead_pages           1 samples [pages] 16382 16382 16382
Test passed on attempt 0
llite.lustre-ffff89dad11e2800.max_read_ahead_whole_mb=4