== sanity test 124b: lru resize (performance test) ================================================================================= 10:23:13 (1790950993)
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 950 (time 1790951007.81 total 10.00 last 94.99)
 - open/close 1837 (time 1790951017.82 total 20.01 last 88.63)
 - open/close 2759 (time 1790951027.82 total 30.01 last 92.17)
 - open/close 3675 (time 1790951037.83 total 40.02 last 91.56)
 - open/close 4702 (time 1790951047.84 total 50.03 last 102.59)
 - open/close 5672 (time 1790951057.85 total 60.04 last 96.87)
 - open/close 6690 (time 1790951067.85 total 70.04 last 101.76)
 - open/close 7609 (time 1790951077.86 total 80.05 last 91.80)
total: 8000 open/close in 84.55 seconds: 94.62 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 134 seconds
lru_size = 400
400
 - unlinked 0 (time 1790951225 ; total 0 ; last 0)
total: 8000 unlinks in 90 seconds: 88.888885 unlinks/second
striped dir -i0 -c2 -H crush  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 922 (time 1790951330.68 total 10.00 last 92.16)
 - open/close 1905 (time 1790951340.69 total 20.01 last 98.23)
 - open/close 2907 (time 1790951350.69 total 30.01 last 100.18)
 - open/close 3891 (time 1790951360.69 total 40.01 last 98.39)
 - open/close 4899 (time 1790951370.69 total 50.02 last 100.78)
 - open/close 5943 (time 1790951380.69 total 60.02 last 104.38)
 - open/close 6977 (time 1790951390.71 total 70.04 last 103.18)
 - open/close 7895 (time 1790951400.72 total 80.04 last 91.78)
total: 8000 open/close in 81.01 seconds: 98.76 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 52% faster with lru resize enabled
 - unlinked 0 (time 1790951481 ; total 0 ; last 0)
total: 8000 unlinks in 49 seconds: 163.265305 unlinks/second