From: Avi Kivity <avi@redhat.com>
To: Ryota Ozaki <ozaki.ryota@gmail.com>
Cc: kvm@vger.kernel.org
Subject: Re: nice value is ignored on cpu time accounting of a guest?
Date: Tue, 20 Oct 2009 14:21:27 +0900 [thread overview]
Message-ID: <4ADD48D7.4090004@redhat.com> (raw)
In-Reply-To: <5e93dcec0910190246s7402417flfaadef0ddaf992ba@mail.gmail.com>
On 10/19/2009 06:46 PM, Ryota Ozaki wrote:
> Hi,
>
> I have a question on cputime accounting of a guest. CPU time of a
> guest is always
> accounted as 'user' time of cpustat even if nice value of the guest is
> higher than 0.
> Is there a reason to do so? I think the cpu time of the guest should
> be accounted
> into 'nice' as same as a normal process. Am I wrong?
>
Hm, guest time is accounted separately, and added to user time in /proc
(so tools that don't know about guest time can read it as user time).
Looks like we need to add a separate guest_nice, or get rid of guest
time altogether.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2009-10-20 5:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-19 9:46 nice value is ignored on cpu time accounting of a guest? Ryota Ozaki
2009-10-20 5:21 ` Avi Kivity [this message]
2009-10-20 7:06 ` Ryota Ozaki
2009-10-20 7:17 ` Avi Kivity
2009-10-20 7:27 ` Ryota Ozaki
2009-10-20 7:34 ` Avi Kivity
2009-10-20 7:38 ` Ryota Ozaki
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