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VMWAre Server 2 High CPU Utilization in Guests

MIkeRKaplan asked
Medium Priority
Last Modified: 2012-05-07
I have 2 VMWare guests (Both Server 2003, 32 bit) that I migrated from VMWare Server Ver 1.0. to VMWare Server 2. These are the only guests running in this server. While host CPU utilization is in single digits (good!) the guests are running 40-70  percent utilization all the time. Even when nothing is running. Worse, when I try to add up all the proccesses' CPU percentages in a VM, I don't come close to what the overall total for that VM. This is with "show processes from all users". I saw an article on the VMWare site about high utilization in inactive machines but it referred to ESX. I'm not running that. Please help.
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How much cpu did you give the guests and which processes are taking all the memory?
Did you upgrade the vmware tools?

Offcourse i meant, which processes are claiming the cpu :)


I attached 2 jpg's of screen prints of task manager which should answer your question about what processes are taking up the CPU. This is from 1 VM, but I believe the same thing is happening to the other one.

this one has 2.5g Gb of memory. I upgraded the VMWare tools.



It looks normal, but the wmi process is taking up a high cpu (i think this should not be so high). Do you have any monitoring program running which checks the server trough wmi?
And offcourse the user todd is taking up a lot of resources (couple of time mmc etc)



I don't have any monitoring program running that checks server trough wmi. Todd is monitoring what is going on as he noticed a slowdown in an idle machine also. This was not a problem in VMWare Server  Any ideas why now in version 2? I feel that something is not right with the VMWare server install, but don't know what it is. If this is normal, I'm moving on  to Hyper-V, another Microsoft product or back to Server version 1.
What services are these guests hosting ? (Domain Controllers, DNS or DHCP Servers)


VM1 is a web server with SQL server 2005 and IIS running on it. At this time VM1 is not in production. No one is logged in. VM2 only runs a Kerio Mail Server for 5 accounts. That's it. No domain controllers, no DNS servers and no DHCP. These are plain jane VM's. Please keep in mind VM1 and VM2 ran fine on VMware server 1 except I ran out of horsepower. I had a smaller processor installed then and could only run VM1. No high cpu utilization rates then.


I solved the problem. After moving the guests from vmware server 1 to vmware server 2 I updated the vmware tools but not the virtual hardware. it was sitting at version 4. I powered down the machines, looked on the right hand side for virtual hardware and clicked the upgrade link underneath. However, after upgrading, the VM's were unusuable. Multiple reboots of the guests (10-15) and multiple reboots of the host (3) finally got the keyboard working, but the display was not very good. pop-ups, dialogs and windows were all not easy to read. The buttons were there but not in their right places. More reboots later I stubbled over the fact that I should click the windows balloon that keeps popping up when logging in after a reboot advising that the screen resolution can be improved. Well I took the option and it asked me if I really wanted to do it. I said yes and 5 seconds later I have a useable screen. I had had fixed IP addresses before the hardware upgrade and had to set them back to their correct addresses after the uopgrade. Then everything worked like a champ.
By the way, cpu utilizations went down to zero or low single digits in an idle VM after the hardware upgrade which was the main reason for this whole question. As a plus the VM's also reboot when the host reboots. This never worked in version 1 for me.
Thanks for the help, but I knew my problem was in VBMware not Windows.
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While I solved my own problem, dnilson provided good solid information to further assist me so I award him the points.  Thanks!
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