== sanity test 124b: lru resize (performance test) ================================================================================= 03:08:05 (1788592085)
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 836 (time 1788592099.30 total 10.01 last 83.52)
 - open/close 1693 (time 1788592109.31 total 20.02 last 85.62)
 - open/close 2531 (time 1788592119.31 total 30.02 last 83.78)
 - open/close 3377 (time 1788592129.32 total 40.03 last 84.55)
 - open/close 4233 (time 1788592139.32 total 50.03 last 85.60)
 - open/close 5128 (time 1788592149.33 total 60.03 last 89.45)
 - open/close 6051 (time 1788592159.33 total 70.03 last 92.29)
 - open/close 6949 (time 1788592169.35 total 80.05 last 89.65)
 - open/close 7844 (time 1788592179.35 total 90.06 last 89.43)
total: 8000 open/close in 92.05 seconds: 86.91 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 1788592338 ; total 1 ; last 1)
total: 8000 unlinks in 91 seconds: 87.912086 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 890 (time 1788592442.65 total 10.01 last 88.89)
 - open/close 1754 (time 1788592452.66 total 20.02 last 86.34)
 - open/close 2642 (time 1788592462.66 total 30.03 last 88.74)
 - open/close 3469 (time 1788592472.66 total 40.03 last 82.70)
 - open/close 4317 (time 1788592482.67 total 50.03 last 84.76)
 - open/close 5194 (time 1788592492.67 total 60.03 last 87.68)
 - open/close 6118 (time 1788592502.67 total 70.04 last 92.36)
 - open/close 7010 (time 1788592512.68 total 80.04 last 89.15)
 - open/close 7892 (time 1788592522.68 total 90.04 last 88.19)
total: 8000 open/close in 91.40 seconds: 87.53 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 71 seconds
lru_size = 4052
3955
ls -la is 51% faster with lru resize enabled
 - unlinked 0 (time 1788592612 ; total 1 ; last 1)
total: 8000 unlinks in 54 seconds: 148.148148 unlinks/second