Microsoft Virtual Server 2005 R2 – CPU allocation problems

Posted on 2006-05-31
Last Modified: 2010-04-18
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..
Question by:daveford123
    LVL 33

    Accepted Solution

    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:

    LVL 33

    Expert Comment


    Author Comment

    Hi NJ,
    Thanks for your response, looks like I have found the answer, 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..
    LVL 33

    Expert Comment

    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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