== sanity test 124b: lru resize (performance test) ================================================================================= 11:07:27 (1788534447)
ldlm.namespaces.*mdc*.lru_size=0->400
ldlm.namespaces.*mdc*.lru_max_age=600000->3900s
striped dir -i0 -c2 -H all_char  /mnt/lustre/d124b.sanity/disable_lru_resize
 - open/close 1046 (time 1788534461.90 total 10.00 last 104.60)
 - open/close 2003 (time 1788534471.91 total 20.01 last 95.60)
 - open/close 2896 (time 1788534481.92 total 30.02 last 89.19)
 - open/close 3844 (time 1788534491.93 total 40.03 last 94.72)
 - open/close 4839 (time 1788534501.93 total 50.03 last 99.46)
 - open/close 5785 (time 1788534511.93 total 60.04 last 94.60)
 - open/close 6753 (time 1788534521.94 total 70.04 last 96.77)
 - open/close 7650 (time 1788534531.94 total 80.04 last 89.64)
total: 8000 open/close in 84.26 seconds: 94.95 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 148 seconds
lru_size = 400
400
 - unlinked 0 (time 1788534694 ; total 0 ; last 0)
total: 8000 unlinks in 89 seconds: 89.887642 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 924 (time 1788534798.00 total 10.01 last 92.29)
 - open/close 1616 (time 1788534808.01 total 20.02 last 69.14)
 - open/close 2425 (time 1788534818.01 total 30.02 last 80.86)
 - open/close 3349 (time 1788534828.02 total 40.03 last 92.32)
 - open/close 4213 (time 1788534838.02 total 50.04 last 86.36)
 - open/close 5186 (time 1788534848.04 total 60.05 last 97.18)
 - open/close 6157 (time 1788534858.05 total 70.06 last 97.01)
 - open/close 7074 (time 1788534868.05 total 80.07 last 91.64)
total: 8000 open/close in 89.54 seconds: 89.35 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 84 seconds
lru_size = 4052
3955
ls -la is 43% faster with lru resize enabled
 - unlinked 0 (time 1788534983 ; total 0 ; last 0)
total: 8000 unlinks in 57 seconds: 140.350876 unlinks/second