== sanity test 124b: lru resize (performance test) ================================================================================= 19:38:10 (1787873890)
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 907 (time 1787873904.64 total 10.01 last 90.65)
 - open/close 1908 (time 1787873914.65 total 20.02 last 99.96)
 - open/close 2842 (time 1787873924.66 total 30.02 last 93.37)
 - open/close 3818 (time 1787873934.67 total 40.03 last 97.50)
 - open/close 4810 (time 1787873944.67 total 50.04 last 99.13)
 - open/close 5815 (time 1787873954.68 total 60.04 last 100.48)
 - open/close 6857 (time 1787873964.68 total 70.05 last 104.15)
 - open/close 7817 (time 1787873974.69 total 80.05 last 95.92)
total: 8000 open/close in 81.80 seconds: 97.80 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 154 seconds
lru_size = 400
400
 - unlinked 0 (time 1787874142 ; total 0 ; last 0)
total: 8000 unlinks in 84 seconds: 95.238098 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 892 (time 1787874241.87 total 10.00 last 89.18)
 - open/close 1819 (time 1787874251.89 total 20.01 last 92.59)
 - open/close 2861 (time 1787874261.89 total 30.02 last 104.11)
 - open/close 3758 (time 1787874271.90 total 40.03 last 89.63)
 - open/close 4622 (time 1787874281.92 total 50.05 last 86.26)
 - open/close 5475 (time 1787874291.92 total 60.05 last 85.28)
 - open/close 6353 (time 1787874301.93 total 70.06 last 87.73)
 - open/close 7291 (time 1787874311.94 total 80.07 last 93.71)
total: 8000 open/close in 87.64 seconds: 91.28 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 75 seconds
lru_size = 4052
3955
ls -la is 51% faster with lru resize enabled
 - unlinked 0 (time 1787874413 ; total 0 ; last 0)
total: 8000 unlinks in 59 seconds: 135.593216 unlinks/second