== sanity test 124b: lru resize (performance test) ================================================================================= 12:44:37 (1789058677)
ldlm.namespaces.*mdc*.lru_size=0->400
ldlm.namespaces.*mdc*.lru_max_age=600000->3900s
striped dir -i0 -c2 -H fnv_1a_64  /mnt/lustre/d124b.sanity/disable_lru_resize
 - open/close 877 (time 1789058691.33 total 10.00 last 87.69)
 - open/close 1691 (time 1789058701.33 total 20.00 last 81.38)
 - open/close 2576 (time 1789058711.33 total 30.01 last 88.45)
 - open/close 3416 (time 1789058721.34 total 40.01 last 83.97)
 - open/close 4209 (time 1789058731.36 total 50.03 last 79.16)
 - open/close 4920 (time 1789058741.36 total 60.03 last 71.09)
 - open/close 5777 (time 1789058751.36 total 70.03 last 85.69)
 - open/close 6530 (time 1789058761.36 total 80.04 last 75.26)
 - open/close 7241 (time 1789058771.37 total 90.05 last 71.04)
total: 8000 open/close in 99.80 seconds: 80.16 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 153 seconds
lru_size = 400
400
 - unlinked 0 (time 1789058944 ; total 0 ; last 0)
total: 8000 unlinks in 98 seconds: 81.632652 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 792 (time 1789059056.47 total 10.01 last 79.11)
 - open/close 1656 (time 1789059066.49 total 20.03 last 86.22)
 - open/close 2524 (time 1789059076.49 total 30.04 last 86.77)
 - open/close 3397 (time 1789059086.50 total 40.05 last 87.21)
 - open/close 4222 (time 1789059096.52 total 50.06 last 82.37)
 - open/close 4985 (time 1789059106.53 total 60.07 last 76.24)
 - open/close 5808 (time 1789059116.54 total 70.08 last 82.23)
 - open/close 6705 (time 1789059126.54 total 80.09 last 89.64)
 - open/close 7640 (time 1789059136.55 total 90.09 last 93.44)
total: 8000 open/close in 93.87 seconds: 85.22 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 81 seconds
lru_size = 4052
3955
ls -la is 47% faster with lru resize enabled
 - unlinked 0 (time 1789059238 ; total 0 ; last 0)
total: 8000 unlinks in 65 seconds: 123.076920 unlinks/second