== sanity test 124b: lru resize (performance test) ================================================================================= 11:35:14 (1781624114)
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 1023 (time 1781624128.86 total 10.01 last 102.25)
 - open/close 1999 (time 1781624138.86 total 20.01 last 97.60)
 - open/close 2981 (time 1781624148.86 total 30.01 last 98.15)
 - open/close 3964 (time 1781624158.88 total 40.03 last 98.13)
 - open/close 4975 (time 1781624168.88 total 50.03 last 101.09)
 - open/close 5912 (time 1781624178.89 total 60.04 last 93.64)
 - open/close 7033 (time 1781624188.89 total 70.04 last 112.06)
 - open/close 7978 (time 1781624198.89 total 80.04 last 94.50)
total: 8000 open/close in 80.34 seconds: 99.58 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 126 seconds
lru_size = 400
400
 - unlinked 0 (time 1781624333 ; total 1 ; last 1)
total: 8000 unlinks in 72 seconds: 111.111115 unlinks/second
striped dir -i0 -c2 -H all_char  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 1068 (time 1781624418.08 total 10.01 last 106.74)
 - open/close 2194 (time 1781624428.09 total 20.02 last 112.49)
 - open/close 3233 (time 1781624438.09 total 30.02 last 103.89)
 - open/close 4356 (time 1781624448.09 total 40.02 last 112.29)
 - open/close 5537 (time 1781624458.11 total 50.04 last 117.89)
 - open/close 6805 (time 1781624468.11 total 60.04 last 126.75)
total: 8000 open/close in 69.34 seconds: 115.37 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 54 seconds
lru_size = 4006
4001
ls -la is 57% faster with lru resize enabled
 - unlinked 0 (time 1781624543 ; total 0 ; last 0)
total: 8000 unlinks in 48 seconds: 166.666672 unlinks/second