vmware cpu utilization rolling between 50% and 90% every hour

Hi

We have a vmware cluster that has all Windows 7 VM's.  I'm seeing a constant CPU load rolling between 50% to 90% every hour consistently.  Any ideas what is going on with the VM's that could cause this?  I was getting high CPU alerts on a couple of the hosts, but I increased the sensitivity of DRS and that has helped even things out a bit, but the first issue is still there.  Please see attached screen shot from foglight.
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tonyjoewalkerAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
What specification are the VMs?

Is this Horizon View with PCoIP?

Do you have enough IOPS to support the VMs?

Have you looked inside the OS for any scheduled events eg no defrag happening no virus scan
tonyjoewalkerAuthor Commented:
What specification are the VMs? - all over based on need - one proc or two.  2 - 8 GB of memory

Is this Horizon View with PCoIP?  The graph is from foglight

Do you have enough IOPS to support the VMs?  Should be, though that is what I'm trying to figure out.  I can add an additional host, but I'd expect to see a more steady utilization

Have you looked inside the OS for any scheduled events eg no defrag happening no virus scan - shouldn't be running any defrags or virus scans 24/7.  I've looked at a couple of the VM's that are pegged and its svchost process that is taking all the processing.
tonyjoewalkerAuthor Commented:
its the svchost.exe process that is taking all the CPU
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Any patches or Windows updates recently.

We use 2 vCPU or 4vCPU for all our workstations for a good user experience and 4GB to 8GB of ram.

Horizon View is a VMware VDI product. I think you must just be connecting via RDP.

Check datastore performance for VMs.

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tonyjoewalkerAuthor Commented:
yup, windows update service.  that and too many didn't have vmware tools installed (don't ask)...  Thanks!
tonyjoewalkerAuthor Commented:
Thanks!
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