== sanity test 854: verify llite.*.max_cached_mb setting ========================================================== 07:32:54 (1773660774)
llite.lustre-ffff93687300c000.max_cached_mb=
users: 5
max_cached_mb: 1846
used_mb: 2
unused_mb: 1844
unevict_mb: 0
reclaim_count: 0
max_read_ahead_mb: 256
used_read_ahead_mb: 0
Initial readahead: 256/64/4 MB
Initial max_cached_mb: 1846 MB
Total RAM: 3693 MB
max_cached_mb=75%: 2769 MB, expect ~2769 MB
max_ra_mb=25%: got 924 MB, expect ~923 MB
max_ra_per_file_mb=5%: got 185 MB, expect ~184
max_ra_whole_mb=1%: got 37 MB, expect ~36
Testing if max_read_ahead_mb=51% is capped at 50%
max_read_ahead_mb is 1846 MB
Value correctly capped at ~50% of RAM (1846 <= 1846)
Testing if max_read_ahead_mb=90% is capped at 50%
max_read_ahead_mb is 1846 MB
Value correctly capped at ~50% of RAM (1846 <= 1846)
Test if max_read_ahead_per_file_mb > max_read_ahead_mb is capped
max_read_ahead_per_file_mb is 1846 MB
Value capped at max_read_ahead_mb (1846 <= 1846)
Test if max_read_ahead_whole_mb > max_read_ahead_per_file_mb capped
max_read_ahead_whole_mb is 1846 MB
Value capped at max_read_ahead_per_file_mb (1846 <= 1846)
Final max_cached_mb: 2769 MB
max_cached_mb percentage functionality verified successfully