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Microsoft Virtual Server 2005 R2 – CPU allocation problems

Posted on 2006-05-31
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Hi There Experts,
I am running Virtual Server 2005 R2 Enterprise on 2003 Server Enterprise on an eight processor server. But VS does not appear to be able to utilise multiple processors very effectively, if I look at Task Man one processor will be flat out while the others are idling, am I missing something? Also The Maximum Capacity (% of system) is set to 12.5 (100 / 8) is there a way of changing this?
Any comments welcomed..
Regards
Dave
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Question by:daveford123
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NJComputerNetworks earned 1500 total points
ID: 16798001
I don't have Virtual Server 2005 (running VMWare here).  But there should be a setting to assign VM's a CPU or have the Virtual Server load balance...  

Here is a screen shot of how this looks in Virtual PC:  http://www.windowsnetworking.com/articles_tutorials/Tuning-Virtual-PC-Performance.html

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by:daveford123
ID: 16800029
Hi NJ,
Thanks for your response, looks like I have found the answer, http://support.microsoft.com/kb/867586/en-us so it looks like virtual server can only have one processor per Virtual Machine. It cannot load balance the load over multiple processors :-(
Does VMWare load balance correctly?
Regards Dave..
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by:NJComputerNetworks
ID: 16800244
No, typically you would assign 1 - 2 cPU's per VM.  We've analyed our environment, and we see that average CPU utilization is under 3%.  In general, RAM is the limiting factor for us...not CPU.

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