Here is another testing on 512M desktop. This time only a big sparse file copy.
- The inactive_list balance is perfectly maintained
- The active_list is scanned a bit more, for the calculation is performed after
the scan, when the nr_inactive is made a little smaller
- direct reclaims near to zero, good or evil?
wfg ~% grep (age |rounds) /proc/zoneinfo
rounds 100
age 659
rounds 100
age 621
wfg ~% show-aging-rate.sh
Linux lark 2.6.15-rc5-mm1 #9 SMP Wed Dec 7 16:47:56 CST 2005 i686 GNU/Linux
total used free shared buffers cached
Mem: 501 475 26 0 6 278
-/+ buffers/cache: 189 311
Swap: 127 2 125
---------------------------------------------------------------
active/inactive size ratios:
DMA0: 75 / 1000 = 161 / 2135
Normal0: 1074 / 1000 = 59046 / 54936
active/inactive scan rates:
DMA: 31 / 1000 = 7867 / ( 246784 + 0)
Normal: 974 / 1000 = 5847744 / ( 6001216 + 128)
---------------------------------------------------------------
inactive size ratios:
DMA0 / Normal0: 388 / 10000 = 2135 / 54936
inactive scan rates:
DMA / Normal: 411 / 10000 = ( 246784 + 0) / ( 6001216 + 128)
pageoutrun / allocstall = 4140780 / 100 = 207039 / 4
wfg ~% vmstat 5 10
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
3 0 2612 6408 7280 293960 0 1 122 13 1178 1415 14 9 75 2
1 0 2612 6404 2144 298144 0 0 190 35 1159 1675 11 89 0 0
1 0 2612 6216 2052 299596 0 0 442 8 1189 1612 10 90 0 0
1 0 2612 5916 2032 299888 0 0 326 0 1182 1713 10 90 0 0
1 3 2612 6528 3252 297240 0 0 795 6 1275 1464 10 53 0 37
0 0 2612 5648 3644 298480 0 0 739 14 1261 1203 14 23 39 24
[the big cp stops about here]
0 0 2612 5784 3660 298532 0 0 0 17 1130 1322 10 3 87 0
0 0 2612 5952 3692 298500 0 0 6 4 1137 1343 9 2 87 2
0 0 2612 5976 3700 298492 0 0 2 3 1143 1327 7 1 91 0
0 0 2612 6000 3700 298492 0 0 0 0 1138 1315 7 2 91 0
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