Plesk 11 - memory usage question

[EricVis]

I was wondering why in Plesk 11 (centos6.4, nothisn g custom, not busy server) my memory stats in Server information look like this:

Memory Usage:
Total 11.60 GB
Used 9.91 GB <-- this is a lot, why it stays on high level?
Free 1.69 GB <-- this getting lower and lower every day
Shared 0 B
Buffer 422.53 MB
Cached 8.39 GB <-- what is this?
Usage 13.08% <-- 13% doesn't make sense, it says 9.91GB used out of 11.6 ?? or "cached" is actually free memory??


when I had Plesk 9.5, memory usage was on 10% and all stats made sense

 

[MantasZ]

http://stackoverflow.com/questions/10585978/linux-command-for-percentage-of-memory-that-is-free

 

[EricVis]

@MantasZ

I know free command, it shows 12GB available, 10GB used same as Plesk stats

1) why Plesk is using so much memory???? that's crazy
2) why Plesk shows 13% usage in Server Infomration / Memoray usage - 13% value is incorrect, it should be the opposite, 87% is used

 

[MantasZ]

Please, post screenshots of health manager and free -m to make it clear.

 

[EricVis]

I can;t install health manager via plesk upgrades/updates interface, it says yum failed to install package..
attached output of top and free commands - both show 10GB used, 12 available

 

[MantasZ]

your free -m says:
1085 MB RAM used and 10797 MB RAM free. look in line for buffers and cache while using free -m, so your RAM is used only at 9%.

but your kipmi0 proccess which is used for server sensors monitoring - eats too much of your CPU. probably you are using esx/vwmare or something like that - so get info from their support.

 

[EricVis]

thanks for answer

I don't use any esx/vwmare or anything else, it is new centos server with plesk 11, nothing else