From: Avi Kivity <avi@redhat.com>
To: Sebastian Hetze <s.hetze@linux-ag.com>
Cc: kvm@vger.kernel.org
Subject: Re: Strange CPU usage pattern in SMP guest
Date: Sun, 21 Mar 2010 14:19:40 +0200 [thread overview]
Message-ID: <4BA60EDC.6080202@redhat.com> (raw)
In-Reply-To: <20100321120236.55228A0015@mail.linux-ag.de>
On 03/21/2010 02:02 PM, Sebastian Hetze wrote:
>
> 12:46:02 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
> 12:46:03 all 0,20 11,35 10,96 8,96 0,40 2,99 0,00 0,00 65,14
> 12:46:03 0 1,00 11,00 7,00 15,00 0,00 1,00 0,00 0,00 65,00
> 12:46:03 1 0,00 7,14 2,04 6,12 1,02 11,22 0,00 0,00 72,45
> 12:46:03 2 0,00 15,00 1,00 12,00 0,00 1,00 0,00 0,00 71,00
> 12:46:03 3 0,00 11,00 23,00 8,00 0,00 0,00 0,00 0,00 58,00
> 12:46:03 4 0,00 0,00 50,00 0,00 0,00 0,00 0,00 0,00 50,00
> 12:46:03 5 0,00 13,00 20,00 4,00 0,00 1,00 0,00 0,00 62,00
>
> So it is only CPU4 that is showing this strange behaviour.
>
Can you adjust irqtop to only count cpu4? or even just post a few 'cat
/proc/interrupts' from that guest.
Most likely the timer interrupt for cpu4 died.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-03-21 12:19 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-21 0:13 Strange CPU usage pattern in SMP guest Sebastian Hetze
2010-03-21 10:09 ` Avi Kivity
2010-03-21 12:02 ` Sebastian Hetze
[not found] ` <20100321120236.55228A0015@mail.linux-ag.de>
2010-03-21 12:19 ` Avi Kivity [this message]
2010-03-21 14:55 ` Sebastian Hetze
[not found] ` <20100321145548.CC027A0015@mail.linux-ag.de>
2010-03-21 15:17 ` Avi Kivity
2010-03-21 15:47 ` Sebastian Hetze
2010-03-22 12:51 ` Sebastian Hetze
2010-03-23 21:18 ` Marcelo Tosatti
2010-03-30 8:27 ` Sebastian Hetze
[not found] ` <20100330082743.49A113030135@mail.linux-ag.de>
2010-04-05 21:24 ` Sebastian Hetze
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4BA60EDC.6080202@redhat.com \
--to=avi@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=s.hetze@linux-ag.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox