== sanity test 124b: lru resize (performance test) ================================================================================= 08:05:06 (1788523506)
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 748 (time 1788523520.77 total 10.00 last 74.78)
 - open/close 1560 (time 1788523530.78 total 20.01 last 81.15)
 - open/close 2447 (time 1788523540.79 total 30.02 last 88.64)
 - open/close 3349 (time 1788523550.80 total 40.03 last 90.11)
 - open/close 4241 (time 1788523560.81 total 50.04 last 89.10)
 - open/close 5109 (time 1788523570.81 total 60.04 last 86.80)
 - open/close 6011 (time 1788523580.81 total 70.04 last 90.15)
 - open/close 6933 (time 1788523590.82 total 80.05 last 92.15)
 - open/close 7800 (time 1788523600.83 total 90.05 last 86.66)
total: 8000 open/close in 92.38 seconds: 86.60 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 87 seconds
lru_size = 400
400
 - unlinked 0 (time 1788523700 ; total 0 ; last 0)
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 895 (time 1788523806.47 total 10.00 last 89.46)
 - open/close 1824 (time 1788523816.47 total 20.01 last 92.88)
 - open/close 2748 (time 1788523826.48 total 30.01 last 92.36)
 - open/close 3651 (time 1788523836.49 total 40.02 last 90.19)
 - open/close 4508 (time 1788523846.51 total 50.04 last 85.54)
 - open/close 5466 (time 1788523856.51 total 60.05 last 95.76)
 - open/close 6352 (time 1788523866.52 total 70.05 last 88.55)
 - open/close 7323 (time 1788523876.52 total 80.06 last 97.05)
total: 8000 open/close in 87.84 seconds: 91.08 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 70 seconds
lru_size = 4054
3955
ls -la is 19% faster with lru resize enabled
 - unlinked 0 (time 1788523972 ; total 0 ; last 0)
total: 8000 unlinks in 60 seconds: 133.333328 unlinks/second