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Programs running slow on virtual machines in Hyper V

Answered Programs running slow on virtual machines in Hyper V

  • Wednesday, March 28, 2012 6:30 PM
     
     
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    I am running Hyper V version 6.0.6002.18005, and management console 6.0 Build 6002 SP2

    Hyper V is running on a Server 2008 SP2 64bit

    E5503 @ 2.00Ghz (2 processors)

    16GB ram

    I have 3 virtual machines all windows 7 32bit OS. With 512MB of RAM allotted for each V machine When I try to Start up one of the machines the booting up process takes forever and then when it finally gets to the login it takes forever to log in and the same with opening programs. It has been running fine for a long time it just recently started to act slow within the past month. The host server is fine it is a little slow but not bad. Any suggestions on what could be making the V machines run extremely slow? The host and v machines have the latest windows updates...  Thank you



     

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  • Thursday, March 29, 2012 5:58 PM
     
     
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    Give them at least 1.5GB of RAM.

    Once the Integration Services are up to date you can also give them two vCPUs in their Settings if multi-threaded apps will be run on them.

    512MB of RAM for Windows 7 is not enough.

    Philip Elder SBS MVP Blog: http://blog.mpecsinc.ca

     
  • Thursday, March 29, 2012 6:31 PM
     
     
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    But each machine was running on 512MB for almost 2 years with no problems... Also coming to realize that the Host server is running really slow now

    Micah

     
  • Thursday, March 29, 2012 6:45 PM
     
     
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    What changed?

    Updates on the host, guests, or both?

    SP1 made a lot of changes in Win7 and Win2k8R2.

    What is the disk subsystem set up on the box? SATA? SAS? Hardware RAID?

    Philip Elder SBS MVP Blog: http://blog.mpecsinc.ca

     
  • Thursday, March 29, 2012 7:08 PM
     
     
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    RAID

    Micah

     
  • Thursday, March 29, 2012 7:08 PM
     
     
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    RAID 15k spindles

    Micah

     
  • Thursday, March 29, 2012 8:03 PM
     
     
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    The host and v machine all up to date for windows updates. Im thinking maybe that might be the problem I just dont know what update could have caused this issue ( if it is an update)

    Micah

     
  • Friday, March 30, 2012 4:58 PM
     
     
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    I saw this in the log files can you help me with that.

    The parent partition uses a different VMBus version. You need to Install a matching VMBus version in this guest installation.

    Thanks again

    Micah

     
  • Friday, March 30, 2012 6:24 PM
     
     
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    Run the Integration Services install on all of the VMs. That will update the VMBus and other components in the VM to match the host.

    Philip Elder SBS MVP Blog: http://blog.mpecsinc.ca

     
  • Friday, March 30, 2012 8:02 PM
     
     
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    I think we found the culprit,,,, Symantec Endpoint Protection......we realized that the server slowed down just a couple days after we installed it and saw on other forums and actual Symantec site stating Server slowdowns when using SEP. Going to try an uninstall to see if that works

    Micah

     
  • Friday, March 30, 2012 8:08 PM
     
     
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    Thus my question about "what changed?"

    There is almost always a catalyst to this kind of performance change. Whether hardware or software, something broke.

    SEP should not be on the host. Period.

    The host should be locked down with one or maybe two accounts able to manage the full server configuration.

    AzMan can be used to give exclusive Hyper-V feature set access for other users.

    Philip Elder SBS MVP Blog: http://blog.mpecsinc.ca

     
  • Monday, April 02, 2012 3:07 PM
     
     
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    Make sure you have the latest version of Endpoint Protection (RU7 MP1). Bump up the memory on these clients, the minimum needed is 1 GB RAM  (2-4 GB recommended) for Windows Vista, Windows 7, Windows Server 2003 (all editions), and Windows Server 2008 (all editions).

    Version list -http://www.symantec.com/business/support/index?page=content&id=TECH156226

     
  • Monday, April 02, 2012 4:38 PM
     
     
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    Each client is running on 1.5GB RAM and 2 processors. And the SEP is up to date and still extreme slowness

    Micah


     
  • Friday, April 06, 2012 6:46 PM
     
     
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    OK i re-installed Windows Server 8 SP2 on the blade server (Dell M610) I re-installed Hyper V role, and installed 1 VM machine running Windows 7 SP1, with 2GB of ram and running on 2 processors , with up-to-date windows update on both the Host and Vm machine. And the VM machine is still running at a crawl the host is running pretty good. And I didn't install SEP...any other suggestions?   Thanks again for your help

    Micah

     
  • Sunday, October 07, 2012 12:49 AM
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    Forums are best effort support but for performance problems I recommend opening a case with Microsoft Support.

    Mohamed Fawzi | http://fawzi.wordpress.com