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  • 1.  CPU usage at 100% on guests after VMotion

    Posted May 22, 2008 11:46 PM

    Hi,

    On ESX 3.5 and Virtual Center 2.5 after I tell a ESX server to enter Maintenance mode, it VMotions all the VM's off (as it should with DRS), but then all the VM's go into 100% CPU usage. If I reboot the Virtual Center machine, then everything is ok again.

    What is going on?

    Jim



  • 2.  RE: CPU usage at 100% on guests after VMotion
    Best Answer

    Posted May 23, 2008 02:11 AM

    Hi Jim, perhaps this KB article is related - http://kb.vmware.com/kb/1003638.



  • 3.  RE: CPU usage at 100% on guests after VMotion

    Posted May 23, 2008 03:38 AM

    apply ESX3.5 Update 1 + Virtual Center Server 2.5 Update 1, the April-30 patch seems have brought back this problem again. so do NOT apply the 04-30-2008 patch.



  • 4.  RE: CPU usage at 100% on guests after VMotion

    Posted May 23, 2008 11:38 AM

    Like Dave said...

    Had the same problem few days ago. This helps for me!

    1. Log on to the VirtualCenter Server Console as an administrator.

    2. Make a backup copy of the vpxd.cfg file (typically it is located in C:\Documents and Settings\All Users\Application Data\VMware\VMware VirtualCenter\vpxd.cfg).

    3. In the vpxd.cfg file, add the following configuration between the <vpxd> and the </vpxd> tags:


      <cluster>


      <VMOverheadGrowthLimit>5</VMOverheadGrowthLimit>

      </cluster>

      This configuration provides an initial growth margin in MB-to-virtual machine overhead memory. You can increase this amount to larger values if doing so further improves virtual machine performance.

    4. Restart the VMware VirtualCenter Server Service.

      Note: When you restart the VMware VirtualCenter Server Service, the new value for the overhead limit should be pushed down to all the clusters in VirtualCenter.