I am experiencing extremely high CPU usage on an SBS 2011 server. The system has been in production for about two years and has performed as normal. Now the system starts running between 50-100% CPU usage as soon as it boots-up. It is not just a single application that is running wild but upwards of twenty at a time that are consuming all process. These applications vary from time to time and are not always the same ones each time.
Not sure when the problem actually began, but users started to report that they were experiencing slow network access to the server shortly after the server was updated through Windows Update, Rollup 10 for Exchange 2010 SP3 was installed and a Consistency Check was performed on the Virtual Drives.
A few days prior to this problem we were experiencing a problem with a proprietary third party application that was using srvany to run it as a service. The service would not start and the application would have to be launched from the desktop. Since running this application as a service is not supported from the manufacture there wasn’t any help diagnosing the problem. – Not sure if this has anything to do with the problem, just noting incase –
I do notice that the “System” process is using extremely excessive CPU Time and Processes.
Dell PowerEdge T320
16 GB RAM
Zeon Processor with 12 cores
3 Drives – RAID 5 with 1 Hot Spare