== sanity test 248c: verify whole file read behavior ===== 19:58:43 (1787788723)
llite.lustre-ffff89e9449e1800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff89e9449e1800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.70527 seconds
llite.lustre-ffff89e9449e1800.read_ahead_stats=
snapshot_time                       1787788732.485256062 secs.nsecs
start_time                          1787788725.113735652 secs.nsecs
elapsed_time                        7.371520410 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-ffff89e9449e1800.read_ahead_stats=clear
llite.lustre-ffff89e9449e1800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.6527 seconds
llite.lustre-ffff89e9449e1800.read_ahead_stats=
snapshot_time                       1787788741.990474459 secs.nsecs
start_time                          1787788732.495302999 secs.nsecs
elapsed_time                        9.495171460 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-ffff89e9449e1800.max_read_ahead_whole_mb=4