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Date: Thu, 22 May 2014 17:25:50 +0200
From: Willem Jan Withagen <wjw@digiware.nl>
Organization: Digiware Management b.v.
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To: virtualization@freebsd.org
Subject: bhyve on AMD, linux and high load
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Hoi,

Just a point on the timeline....
I think somebody asked why his CPU load was so high on AMD running linux.

I've completed compiling a "fresh" linux-kernel on my Ubuntu 14.04 
system, installed and rebooted it.

And where previously a Linux-kernel would drain the CPUs it got assigned 
to the max... Aka 2 CPU would drive the load +2 and top would diskplay a 
200% cpu.

With the new kernel, that is no longer the case. On a idle vm the CPU 
load is like 6-7%....

At the moment I'm running:
	linux-image-3.13.0-24-generic_3.13.0-24.46_amd64

So somewhere in the interaction between bhyve idle detection and the 
older linux kernel things do not match...

--WjW