== sanity test 124b: lru resize (performance test) ================================================================================= 20:25:46 (1781828746)
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 978 (time 1781828760.27 total 10.00 last 97.75)
 - open/close 1990 (time 1781828770.27 total 20.01 last 101.19)
 - open/close 3014 (time 1781828780.28 total 30.01 last 102.31)
 - open/close 4136 (time 1781828790.29 total 40.02 last 112.11)
 - open/close 5149 (time 1781828800.30 total 50.03 last 101.23)
 - open/close 6131 (time 1781828810.30 total 60.04 last 98.13)
 - open/close 7055 (time 1781828820.31 total 70.04 last 92.34)
 - open/close 7991 (time 1781828830.33 total 80.06 last 93.46)
total: 8000 open/close in 80.16 seconds: 99.80 ops/second
doing ls -la /mnt/lustre/d124b.sanity/disable_lru_resize 3 times
ls -la time: 130 seconds
lru_size = 400
400
 - unlinked 0 (time 1781828967 ; total 0 ; last 0)
total: 8000 unlinks in 76 seconds: 105.263161 unlinks/second
striped dir -i0 -c2 -H crush2  /mnt/lustre/d124b.sanity/enable_lru_resize
 - open/close 987 (time 1781829057.38 total 10.01 last 98.64)
 - open/close 1939 (time 1781829067.38 total 20.01 last 95.18)
 - open/close 2914 (time 1781829077.38 total 30.01 last 97.46)
 - open/close 3991 (time 1781829087.40 total 40.03 last 107.51)
 - open/close 5058 (time 1781829097.41 total 50.03 last 106.66)
 - open/close 6135 (time 1781829107.41 total 60.04 last 107.65)
 - open/close 7295 (time 1781829117.41 total 70.04 last 115.98)
total: 8000 open/close in 77.06 seconds: 103.81 ops/second
doing ls -la /mnt/lustre/d124b.sanity/enable_lru_resize 3 times
ls -la time: 61 seconds
lru_size = 4052
3955
ls -la is 53% faster with lru resize enabled
 - unlinked 0 (time 1781829200 ; total 0 ; last 0)
total: 8000 unlinks in 42 seconds: 190.476196 unlinks/second