linux-kernel - Re: [PATCH -tip] sched, cpuacct: fix niced guest time accounting

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Message-ID: <20091023111920.GA5886@elte.hu>
Date:	Fri, 23 Oct 2009 13:19:20 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Ryota Ozaki <ozaki.ryota@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>, Avi Kivity <avi@...hat.com>,
	KVM ML <kvm@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH -tip] sched, cpuacct: fix niced guest time accounting


* Ryota Ozaki <ozaki.ryota@...il.com> wrote:

> Hi list,
> (CC: Ingo and Avi)
> 
> CPU time of a guest is always accounted in 'user' time
> without concern for the nice value of its counterpart
> process although the guest is scheduled under the nice
> value.
> 
> This patch fixes the defect and accounts cpu time of
> a niced guest in 'nice' time as same as a niced process.
> 
> And also the patch adds 'guest_nice' to cpuacct. The
> value provides niced guest cpu time which is like 'nice'
> to 'user'.
> 
> This patch has already reviewed and acked by Avi on KVM ML.
> 
> The original discussions can be found here.
> http://www.mail-archive.com/kvm@vger.kernel.org/msg23982.html
> http://www.mail-archive.com/kvm@vger.kernel.org/msg23860.html

your patch is line-wrapped and does not apply (possibly due to more 
whitespace damage).

Please consult Documentation/email-clients.txt and send a patch against 
latest -tip :

  http://people.redhat.com/mingo/tip.git/README

Thanks,

	Ingo
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