From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Tokarev <mjt@tls.msk.ru>
Subject: Re: KVM with hugepages generate huge load with two guests
Date: Sun, 21 Nov 2010 11:50:51 +0300
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Cc: kvm@vger.kernel.org, Marcelo Tosatti <mtosatti@redhat.com>,
	Avi Kivity <avi@redhat.com>
To: Dmitry Golubev <lastguru@gmail.com>
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21.11.2010 03:24, Dmitry Golubev wrote:
> Hi,
> 
> Seems that nobody is interested in this bug :(
> 
> Anyway I wanted to add a bit more to this investigation.
> 
> Once I put "nohz=off highres=off clocksource=acpi_pm" in guest kernel
> options, the guests started to behave better - they do not stay in the
> slow state, but rather get there for some seconds (usually up to
> minute, but sometimes 2-3 minutes) and then get out of it (this cycle

Just out of curiocity: did you try updating the BIOS on your
motherboard?  The issus you're facing seems to be quite unique,
and I've seen more than once how various different weird issues
were fixed just by updating the BIOS.  Provided they actually
did they own homework and fixed something and released the fixes
too... ;)

P.S.  I'm Not A Guru (tm) :)

/mjt