How many instances at the same time?

Discussion in 'Virtual PC' started by aslan, May 19, 2007.

  1. aslan

    aslan Guest

    Hello All,

    I always run 1 instance at a time on the same machine. However I have a
    feeling that on a core 2 duo it would be OK to run 2 instances at the same

    When I check idle times in proces explorer (or task manager) it goes down to
    somewhere 50%. I think that means the secondcore (or one of the cores) is
    sitting idle most of the times. So the second intance would be OK and would
    use the idle core. Am I right with this kind of thinking?
    aslan, May 19, 2007
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  2. Not really, for most of it work and with the exception of some I/O
    processes, VPC will use only one single core; even when there are more than
    a single instances running. This means that if you are running two
    instances, these two are running on the same core and the idle core remains
    unused (at least for VPC but of course, other processes on the host can use

    In contrast to VPC, Virtual Server and some other competiting products can
    use more than a single core when running multiple instances.
    Sylvain Lafontaine, May 19, 2007
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  3. No. As Sylvain points out one core will be used by vm's. You can run more
    than one vm at a time even on a single core system, however. Your system's
    resources and the demands of the vm's will determine how efficiently you can
    run several vm's at once.
    Colin Barnhorst, May 19, 2007
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