== sanity test 124b: lru resize (performance test) ================================================================================= 17:36:21 (1789680981)
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 863 (time 1789680995.78 total 10.01 last 86.23)
 - open/close 1752 (time 1789681005.78 total 20.01 last 88.90)
 - open/close 2623 (time 1789681015.78 total 30.01 last 87.06)
 - open/close 3445 (time 1789681025.79 total 40.01 last 82.18)
 - open/close 4206 (time 1789681035.80 total 50.03 last 76.01)
 - open/close 4944 (time 1789681045.81 total 60.04 last 73.68)
 - open/close 5696 (time 1789681055.82 total 70.05 last 75.14)
 - open/close 6541 (time 1789681065.82 total 80.05 last 84.49)
 - open/close 7371 (time 1789681075.82 total 90.05 last 82.98)
total: 8000 open/close in 97.82 seconds: 81.78 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 142 seconds
lru_size = 400
400
 - unlinked 0 (time 1789681234 ; total 0 ; last 0)
total: 8000 unlinks in 74 seconds: 108.108109 unlinks/second
striped dir -i0 -c2 -H crush  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 851 (time 1789681322.73 total 10.01 last 85.03)
 - open/close 1780 (time 1789681332.73 total 20.02 last 92.84)
 - open/close 2724 (time 1789681342.74 total 30.02 last 94.38)
 - open/close 3738 (time 1789681352.74 total 40.02 last 101.38)
 - open/close 4716 (time 1789681362.74 total 50.02 last 97.76)
 - open/close 5705 (time 1789681372.74 total 60.03 last 98.88)
 - open/close 6671 (time 1789681382.75 total 70.03 last 96.53)
 - open/close 7651 (time 1789681392.76 total 80.04 last 97.90)
total: 8000 open/close in 83.80 seconds: 95.46 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 63 seconds
lru_size = 4052
3955
ls -la is 55% faster with lru resize enabled
 - unlinked 0 (time 1789681473 ; total 0 ; last 0)
total: 8000 unlinks in 45 seconds: 177.777771 unlinks/second