== sanity test 248c: verify whole file read behavior ===== 03:01:20 (1789023680)
llite.lustre-ffff991b48ebe800.read_ahead_stats=c
llite.lustre-ffff991b48ebe800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.28417 seconds
llite.lustre-ffff991b48ebe800.read_ahead_stats=
snapshot_time                       1789023689.891379625 secs.nsecs
start_time                          1789023682.058809644 secs.nsecs
elapsed_time                        7.832569981 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-ffff991b48ebe800.read_ahead_stats=clear
llite.lustre-ffff991b48ebe800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.45057 seconds
llite.lustre-ffff991b48ebe800.read_ahead_stats=
snapshot_time                       1789023695.958721168 secs.nsecs
start_time                          1789023689.907903794 secs.nsecs
elapsed_time                        6.050817374 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
Try 0 failed: whole file readahead took: 7.28417, greater than non: 4.45057
llite.lustre-ffff991b48ebe800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.96944 seconds
llite.lustre-ffff991b48ebe800.read_ahead_stats=
snapshot_time                       1789023704.612474287 secs.nsecs
start_time                          1789023689.907903794 secs.nsecs
elapsed_time                        14.704570493 secs.nsecs
hits                                32764 samples [pages]
misses                              4 samples [pages]
zero_size_window                    2 samples [pages]
failed_to_fast_read                 6 samples [pages]
readahead_pages                     2 samples [pages] 16382 16382 32764
llite.lustre-ffff991b48ebe800.read_ahead_stats=clear
llite.lustre-ffff991b48ebe800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.52785 seconds
llite.lustre-ffff991b48ebe800.read_ahead_stats=
snapshot_time                       1789023713.303628876 secs.nsecs
start_time                          1789023704.633600692 secs.nsecs
elapsed_time                        8.670028184 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 1
llite.lustre-ffff991b48ebe800.max_read_ahead_whole_mb=4