== sanity test 124b: lru resize (performance test) ================================================================================= 13:27:12 (1787851632)
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 956 (time 1787851647.21 total 10.00 last 95.60)
 - open/close 1837 (time 1787851657.21 total 20.00 last 88.08)
 - open/close 2699 (time 1787851667.22 total 30.01 last 86.17)
 - open/close 3456 (time 1787851677.23 total 40.02 last 75.58)
 - open/close 4003 (time 1787851687.23 total 50.02 last 54.70)
 - open/close 4961 (time 1787851697.24 total 60.03 last 95.70)
 - open/close 5872 (time 1787851707.25 total 70.03 last 91.07)
 - open/close 6628 (time 1787851717.25 total 80.04 last 75.59)
 - open/close 7331 (time 1787851727.25 total 90.04 last 70.25)
total: 8000 open/close in 98.92 seconds: 80.87 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 92 seconds
lru_size = 400
400
 - unlinked 0 (time 1787851838 ; total 0 ; last 0)
total: 8000 unlinks in 107 seconds: 74.766357 unlinks/second
striped dir -i0 -c2 -H crush  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 992 (time 1787851961.44 total 10.00 last 99.19)
 - open/close 1797 (time 1787851971.45 total 20.00 last 80.49)
 - open/close 2850 (time 1787851981.45 total 30.01 last 105.22)
 - open/close 3747 (time 1787851991.46 total 40.02 last 89.63)
 - open/close 4717 (time 1787852001.48 total 50.04 last 96.81)
 - open/close 5548 (time 1787852011.48 total 60.04 last 83.08)
 - open/close 6378 (time 1787852021.49 total 70.05 last 82.90)
 - open/close 7273 (time 1787852031.50 total 80.06 last 89.46)
total: 8000 open/close in 87.87 seconds: 91.04 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 87 seconds
lru_size = 4052
3955
ls -la is 5% faster with lru resize enabled
 - unlinked 0 (time 1787852150 ; total 0 ; last 0)
total: 8000 unlinks in 70 seconds: 114.285713 unlinks/second