== sanity test 248c: verify whole file read behavior ===== 14:51:02 (1773687062)
llite.lustre-ffff9026d8833000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff9026d8833000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.18584 seconds
llite.lustre-ffff9026d8833000.read_ahead_stats=
snapshot_time             1773687068.543395544 secs.nsecs
start_time                1773687063.144142421 secs.nsecs
elapsed_time              5.399253123 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-ffff9026d8833000.read_ahead_stats=clear
llite.lustre-ffff9026d8833000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.23068 seconds
llite.lustre-ffff9026d8833000.read_ahead_stats=
snapshot_time             1773687074.466353014 secs.nsecs
start_time                1773687068.551152095 secs.nsecs
elapsed_time              5.915200919 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-ffff9026d8833000.max_read_ahead_whole_mb=4