Dell PE T320 and VM CPU Issues

 

Scenario:

Dell PE T320

OS: Windows 2012 running Hyper-V configured with 1 VM

VM: Windows SBS Server 2011

 

Issue:

For no apparent reason the SBS 2011 VM randomly spikes CPU to 100% and remains at this level.  There is NO set identified processing culprit.  Usage is all over the map between multiple, random processes.

Rebooting the VM does not fix the issue.  Rebooting the Host does not fix the issue.

 

Possible fix found:

Found  a few forum threads that talked about this exact same issue and multiple users (vm’s) affected.  The accepted FIX for this appeared to be:

1) update all required FW for the Host

2) MOST Importantly set the System Profile Settings in the BIOS from “Performance Per Watt Optimized (DAPC) to Performance Optimized.

Performance Per Watt Optimized (DAPC)

– When this mode is selected, BIOS sets the CPU Power Management as System DBPP. )

Performance Optimized

– Under this mode, the CPU Power Management field is set to Performance and allow the BIOS to program the processor for maximum performance state.

More about this can be found HERE