== sanity test 248c: verify whole file read behavior ===== 09:03:12 (1775221392)
llite.lustre-ffff943110d99000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char /mnt/lustre/d248c.sanity
llite.lustre-ffff943110d99000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.01875 seconds
llite.lustre-ffff943110d99000.read_ahead_stats=
snapshot_time             1775221396.978742965 secs.nsecs
start_time                1775221393.569786168 secs.nsecs
elapsed_time              3.408956797 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-ffff943110d99000.read_ahead_stats=clear
llite.lustre-ffff943110d99000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.42299 seconds
llite.lustre-ffff943110d99000.read_ahead_stats=
snapshot_time             1775221401.283449600 secs.nsecs
start_time                1775221396.990600742 secs.nsecs
elapsed_time              4.292848858 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-ffff943110d99000.max_read_ahead_whole_mb=4