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High CPU System Process

Posted on 2011-09-30
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Last Modified: 2012-05-12
I have 3 domain controllers that are all running between 85-95% CPU usage. This issue started over the weekend and nothing is showing up in the logs. I've used process explorer to narrow the issue to the system service. I would also like to note, this has not affected performance or availability of any services, critical or otherwise.

Details and what I've ruled out...

Two of the DC's are Server 03 and the third is 08.
The 03 servers use Symantec and the 08 uses Mcafee.
All 3 are virtualized on 3 different hosts using VMWare.

Due to the fact that they're different OS's and they have different AV's running, I do not think it has anything to do with AV. I've also run scans to check for viruses and turned up nothing.

When I look at the threads of the process, the culprit appears to be "srv.sys+0x1a602 "

Google hasn't turned up much beyond some Microsoft hotfixes revolving around AV patches, which I am inherently skeptical of.  

Any ideas would be great! Thanks!

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Question by:THe_Revolver
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Expert Comment

by:Dr. Klahn
ID: 36894599
I have never seen a system that ran correctly with the Norton/Symantec antivirus.  Recommend you uninstall Norton/Symantec, and all its associated addons, using the freeware Revo Uninstaller.  Then see if the CPU issue is alleviated.  If it is, well and good; choose a different antivirus.  If not, other avenues can be explored.
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Expert Comment

by:D_Vante
ID: 36897274
I have seen this when a service is constantly accesing the DCs for permission.  Could be something as simple as a copier with a scan to network service,  Have you checked the event logs
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Accepted Solution

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THe_Revolver earned 0 total points
ID: 36919084
Turns out one of our admins pushed a script without anyone knowing. Threw a wrench in the works. Thanks!
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Author Closing Comment

by:THe_Revolver
ID: 36941249
Make sure everyone on your team documents their work.
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