| Curious about physpages vs RSS [message #33153] |
Thu, 25 September 2008 08:54  |
devonblzx
Messages: 127
Registered: December 2006
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Senior Member |
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Hello,
I have been trying to figure out the actual RAM usage of some of my containers, I know physpages somewhat represents this but the numbers seem strange.
For example, when I added up all the physpages current values from /proc/user_beancounters of all running VPS's it turns out 1400MB of usage. When I looked at the wiki, I saw about adding kmem and the buffers which took it up to 1460MB, but when I type free -m it turns out...
# free -m
total used free shared buffers cached
Mem: 7899 7539 359 0 533 4972
-/+ buffers/cache: 2034 5864
Swap: 4110 0 4109
(2034MB Used after +/- buffers/cache)
When I add up the RSS values in 'ps aux' of all running VPS's, it turns out 1950MB, a much closer value.
Any ideas or explanations would be great. Which number is reliable?
ByteOnSite President
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