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Apparent memory ''overusage'' on XenServer 7

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#1 TinoNgombo


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  • Location:Luanda, Angola
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Posted 17 November 2016 - 10:45 AM

Greetings, pros.


We have XenServer 7 installed on an HP Proliant DL360 Gen9 server, running 4 VMs. It has a total of 16GB.
Below is a brief info about the allocated memory for each one of the 4 VMs:


CentOS 7 test machine: 1GB RAM;

Windows 2012 R2 Server 1: 4GB RAM;

Windows 2012 R2 Server 2: 1GB RAM:

PF Sense Firewall: 1GB RAM.



However, on XenCenter, I get constant alerts regarding control domain/hypervisor memory usage, which say: ''The memory required by the control domain on server 'example' is 106.8% of its allocated memory. Occasional performance degradation can be expected when memory swapping is forced to happen''.

The CPU model is Intel Xeon CPU E5-2609 v3 @ 1.90GHz; Speed: 1897 MHz.

Is there any possible issue? Any best practice/tips to follow?

Thanks in advance :)



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