[Users] memory issues on openvz hardware node

[Kirill Korotaev]

This is absolutely normal: unlike VM virtualization, containers can benefit from available and not used memory on the host and use it e.g. for disk caches.
So kernel always tries to keep Free memory as low as possible by caching as much data as possible. It's good for performance.

Thanks,
Kirill


On Oct 29, 2012, at 18:09 , manoj j <manojj at adodis.com<mailto:manojj at adodis.com>>
 wrote:

Hello All,

I have a query on openvz installation and management. It would be of great help if any body can help me out. I have posted the same question in many forums, but couldn't find a solution.

We have purchased a dedicated server with following configuration

32GB RAM (64GB SWAP) 16 core (Processor: Intel Quadcore E5420)

After that we have installed openvz kernel and hosted 13 VPS on it.

The issue what are facing is, i have allocated only 21GB RAM for all the VPS. However, the hardware, it is showing only 1113MB memory left!

# free -m
             total       used       free     shared    buffers     cached
Mem:         32112      30998       1113          0       1715      24082
-/+ buffers/cache:       5201      26911
Swap:        65538          0      65538


VPSID                |           RAM ALLOCATED


101
        2GB
102
        1GB
103
        1GB
104
        1GB
105
        2GB
106
        1GB
107
        1GB
108
        1GB
109
        2GB
110
        4GB
111
        3GB
112
        1GB
113
        1GB



We are using solusvm control panel to manage the vms and in the node limit I have set the following limits

Max Memory: 32 GB Max Disk: 1 TB

WE have also set bustible RAM as same as the actual RAM for all the VMS.

Can anybody tell us what is the issue? Is it normal with openvz virtualisation ?


--
Thanks and Regards
Manoj Janardhan
Hosting Engineer
Phone: +91-9731390415,
Search for Hosting Raja in major search Engines, Like www.google.co.in<http://www.google.co.in/> and www.Bing.com<http://www.bing.com/>. We will be there for you to help.



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