== sanity test 124b: lru resize (performance test) ================================================================================= 15:53:04 (1780343584)
ldlm.namespaces.*mdc*.lru_size=0->400
ldlm.namespaces.*mdc*.lru_max_age=600000->3900s
striped dir -i0 -c2 -H crush  /mnt/lustre/d124b.sanity/disable_lru_resize
 - open/close 1449 (time 1780343597.25 total 10.01 last 144.81)
 - open/close 2813 (time 1780343607.25 total 20.01 last 136.37)
 - open/close 4355 (time 1780343617.25 total 30.01 last 154.14)
 - open/close 5769 (time 1780343627.25 total 40.01 last 141.39)
 - open/close 7263 (time 1780343637.25 total 50.01 last 149.39)
total: 8000 open/close in 54.95 seconds: 145.60 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 95 seconds
lru_size = 400
400
 - unlinked 0 (time 1780343741 ; total 0 ; last 0)
total: 8000 unlinks in 34 seconds: 235.294113 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 1673 (time 1780343786.82 total 10.01 last 167.18)
 - open/close 3013 (time 1780343796.82 total 20.01 last 133.98)
 - open/close 4513 (time 1780343806.83 total 30.02 last 149.88)
 - open/close 5954 (time 1780343816.83 total 40.02 last 144.09)
 - open/close 7671 (time 1780343826.83 total 50.02 last 171.68)
total: 8000 open/close in 52.20 seconds: 153.25 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 46 seconds
lru_size = 4052
3955
ls -la is 51% faster with lru resize enabled
 - unlinked 0 (time 1780343884 ; total 0 ; last 0)
total: 8000 unlinks in 28 seconds: 285.714294 unlinks/second