== sanity test 124b: lru resize (performance test) ================================================================================= 15:44:49 (1788291889)
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 849 (time 1788291904.51 total 10.01 last 84.84)
 - open/close 1756 (time 1788291914.51 total 20.01 last 90.70)
 - open/close 2656 (time 1788291924.54 total 30.03 last 89.76)
 - open/close 3589 (time 1788291934.54 total 40.04 last 93.26)
 - open/close 4455 (time 1788291944.55 total 50.05 last 86.53)
 - open/close 5519 (time 1788291954.55 total 60.05 last 106.35)
 - open/close 6465 (time 1788291964.56 total 70.06 last 94.54)
 - open/close 7361 (time 1788291974.57 total 80.06 last 89.56)
total: 8000 open/close in 87.17 seconds: 91.78 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 94 seconds
lru_size = 400
400
 - unlinked 0 (time 1788292087 ; total 0 ; last 0)
total: 8000 unlinks in 86 seconds: 93.023254 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 951 (time 1788292188.85 total 10.01 last 95.03)
 - open/close 1949 (time 1788292198.86 total 20.01 last 99.78)
 - open/close 2937 (time 1788292208.86 total 30.01 last 98.78)
 - open/close 3893 (time 1788292218.87 total 40.02 last 95.51)
 - open/close 4958 (time 1788292228.87 total 50.02 last 106.48)
 - open/close 5940 (time 1788292238.87 total 60.02 last 98.19)
 - open/close 6954 (time 1788292248.88 total 70.03 last 101.35)
 - open/close 7904 (time 1788292258.88 total 80.03 last 94.94)
total: 8000 open/close in 81.10 seconds: 98.64 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 90 seconds
lru_size = 4052
3955
ls -la is 4% faster with lru resize enabled
 - unlinked 0 (time 1788292370 ; total 0 ; last 0)
total: 8000 unlinks in 54 seconds: 148.148148 unlinks/second