== sanity test 124b: lru resize (performance test) ================================================================================= 17:39:53 (1788212393)
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 849 (time 1788212408.59 total 10.00 last 84.86)
 - open/close 1669 (time 1788212418.60 total 20.02 last 81.91)
 - open/close 2534 (time 1788212428.61 total 30.03 last 86.39)
 - open/close 3396 (time 1788212438.62 total 40.03 last 86.19)
 - open/close 4246 (time 1788212448.62 total 50.03 last 84.97)
 - open/close 5133 (time 1788212458.62 total 60.04 last 88.68)
 - open/close 5944 (time 1788212468.63 total 70.05 last 81.01)
 - open/close 6732 (time 1788212478.64 total 80.05 last 78.74)
 - open/close 7510 (time 1788212488.64 total 90.06 last 77.80)
total: 8000 open/close in 95.48 seconds: 83.79 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 170 seconds
lru_size = 400
400
 - unlinked 0 (time 1788212674 ; total 0 ; last 0)
total: 8000 unlinks in 95 seconds: 84.210526 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 963 (time 1788212784.79 total 10.00 last 96.25)
 - open/close 1742 (time 1788212794.80 total 20.02 last 77.82)
 - open/close 2521 (time 1788212804.81 total 30.02 last 77.84)
 - open/close 3231 (time 1788212814.83 total 40.04 last 70.90)
 - open/close 4041 (time 1788212824.83 total 50.04 last 80.99)
 - open/close 4849 (time 1788212834.83 total 60.04 last 80.78)
 - open/close 5723 (time 1788212844.84 total 70.05 last 87.31)
 - open/close 6652 (time 1788212854.84 total 80.06 last 92.86)
 - open/close 7506 (time 1788212864.85 total 90.06 last 85.38)
total: 8000 open/close in 95.12 seconds: 84.11 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 91 seconds
lru_size = 4052
3955
ls -la is 46% faster with lru resize enabled
 - unlinked 0 (time 1788212982 ; total 0 ; last 0)
total: 8000 unlinks in 63 seconds: 126.984123 unlinks/second