== sanity test 248c: verify whole file read behavior ===== 08:47:57 (1726836477)
llite.lustre-ffff8800a9821000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char /mnt/lustre/d248c.sanity
llite.lustre-ffff8800a9821000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 23.2 seconds
llite.lustre-ffff8800a9821000.read_ahead_stats=
snapshot_time             1726836481.807424448 secs.nsecs
start_time                1726836478.643541083 secs.nsecs
elapsed_time              3.163883365 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-ffff8800a9821000.read_ahead_stats=clear
llite.lustre-ffff8800a9821000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 20.1 seconds
llite.lustre-ffff8800a9821000.read_ahead_stats=
snapshot_time             1726836485.779970851 secs.nsecs
start_time                1726836481.814955251 secs.nsecs
elapsed_time              3.965015600 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-ffff8800a9821000.max_read_ahead_whole_mb=64