== sanity test 124b: lru resize (performance test) ================================================================================= 00:04:31 (1775880271)
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 4875 (time 1775880285.00 total 10.00 last 487.49)
total: 8000 open/close in 16.87 seconds: 474.31 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 79 seconds
lru_size = 400
400
 - unlinked 0 (time 1775880374 ; total 0 ; last 0)
total: 8000 unlinks in 13 seconds: 615.384644 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 4274 (time 1775880400.71 total 10.00 last 427.40)
total: 8000 open/close in 17.92 seconds: 446.35 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 47 seconds
lru_size = 4052
3955
ls -la is 40% faster with lru resize enabled
 - unlinked 0 (time 1775880463 ; total 0 ; last 0)
total: 8000 unlinks in 10 seconds: 800.000000 unlinks/second