== sanity test 124b: lru resize (performance test) ================================================================================= 17:15:13 (1787865313)
ldlm.namespaces.*mdc*.lru_size=0->400
ldlm.namespaces.*mdc*.lru_max_age=600000->3900s
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/disable_lru_resize
 - open/close 912 (time 1787865326.97 total 10.00 last 91.18)
 - open/close 1866 (time 1787865336.97 total 20.00 last 95.39)
 - open/close 2772 (time 1787865346.97 total 30.01 last 90.53)
 - open/close 3717 (time 1787865356.98 total 40.01 last 94.47)
 - open/close 4540 (time 1787865366.98 total 50.02 last 82.25)
 - open/close 5464 (time 1787865376.99 total 60.02 last 92.36)
 - open/close 6305 (time 1787865387.00 total 70.03 last 84.04)
 - open/close 7132 (time 1787865397.00 total 80.04 last 82.65)
 - open/close 7905 (time 1787865407.00 total 90.04 last 77.27)
total: 8000 open/close in 91.19 seconds: 87.73 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 142 seconds
lru_size = 400
400
 - unlinked 0 (time 1787865560 ; total 0 ; last 0)
total: 8000 unlinks in 87 seconds: 91.954025 unlinks/second
striped dir -i0 -c2 -H crush  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 907 (time 1787865662.55 total 10.01 last 90.60)
 - open/close 1877 (time 1787865672.55 total 20.02 last 96.94)
 - open/close 2815 (time 1787865682.56 total 30.02 last 93.74)
 - open/close 3744 (time 1787865692.58 total 40.05 last 92.65)
 - open/close 4583 (time 1787865702.60 total 50.06 last 83.79)
 - open/close 5449 (time 1787865712.60 total 60.07 last 86.57)
 - open/close 6195 (time 1787865722.61 total 70.07 last 74.55)
 - open/close 7030 (time 1787865732.61 total 80.08 last 83.47)
 - open/close 7942 (time 1787865742.62 total 90.08 last 91.17)
total: 8000 open/close in 90.76 seconds: 88.14 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 85 seconds
lru_size = 4052
3955
ls -la is 40% faster with lru resize enabled
 - unlinked 0 (time 1787865849 ; total 0 ; last 0)
total: 8000 unlinks in 64 seconds: 125.000000 unlinks/second