== sanity test 124b: lru resize (performance test) ================================================================================= 07:19:51 (1788520791)
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 902 (time 1788520806.66 total 10.00 last 90.16)
 - open/close 1797 (time 1788520816.67 total 20.02 last 89.38)
 - open/close 2673 (time 1788520826.68 total 30.02 last 87.55)
 - open/close 3453 (time 1788520836.69 total 40.03 last 77.92)
 - open/close 4327 (time 1788520846.70 total 50.04 last 87.33)
 - open/close 5115 (time 1788520856.70 total 60.05 last 78.75)
 - open/close 5862 (time 1788520866.71 total 70.05 last 74.69)
 - open/close 6652 (time 1788520876.71 total 80.05 last 78.99)
 - open/close 7465 (time 1788520886.72 total 90.06 last 81.21)
total: 8000 open/close in 96.64 seconds: 82.78 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 147 seconds
lru_size = 400
400
 - unlinked 0 (time 1788521050 ; total 0 ; last 0)
total: 8000 unlinks in 96 seconds: 83.333336 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 813 (time 1788521162.00 total 10.01 last 81.21)
 - open/close 1688 (time 1788521172.01 total 20.02 last 87.39)
 - open/close 2661 (time 1788521182.01 total 30.02 last 97.29)
 - open/close 3554 (time 1788521192.01 total 40.03 last 89.29)
 - open/close 4443 (time 1788521202.02 total 50.03 last 88.88)
 - open/close 5263 (time 1788521212.03 total 60.04 last 81.92)
 - open/close 6163 (time 1788521222.03 total 70.04 last 89.94)
 - open/close 6990 (time 1788521232.04 total 80.05 last 82.67)
 - open/close 7849 (time 1788521242.04 total 90.05 last 85.86)
total: 8000 open/close in 91.73 seconds: 87.21 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 90 seconds
lru_size = 4052
3955
ls -la is 38% faster with lru resize enabled
 - unlinked 0 (time 1788521354 ; total 0 ; last 0)
total: 8000 unlinks in 62 seconds: 129.032257 unlinks/second