From: Tomasz Chmielewski <mangoo@wpkg.org>
To: kvm@vger.kernel.org
Subject: 0.11: SMP guests using one host CPU only?
Date: Tue, 20 Oct 2009 11:03:59 +0200 [thread overview]
Message-ID: <4ADD7CFF.1080003@wpkg.org> (raw)
On a 8 CPU host, I created a guest with 4 CPUs (-smp 4).
Unfortunately, the guest only uses one host CPU.
For example, running "cat /dev/urandom | gzip -9 >/dev/null &" several
times on this guest causes load on only one host CPU.
Is it expected?
The host is running 2.6.32-rc5 and qemu-kvm-0.11. I also tried 2.6.31.5
with qemu-kvm-0.11 with the same result.
I have another machine, running 2.6.24 kernel, where it works just fine
(running several CPU-intensive tasks on a guest result in several host
CPUs being loaded).
--
Tomasz Chmielewski
http://wpkg.org
next reply other threads:[~2009-10-20 9:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-20 9:03 Tomasz Chmielewski [this message]
2009-10-20 9:41 ` 0.11: SMP guests using one host CPU only? Avi Kivity
2009-10-20 10:17 ` Tomasz Chmielewski
2009-10-20 13:16 ` Avi Kivity
2009-10-20 13:19 ` Tomasz Chmielewski
2009-10-20 13:21 ` Avi Kivity
2009-10-20 13:48 ` Tomasz Chmielewski
2009-10-22 7:05 ` Avi Kivity
2009-10-22 9:28 ` Tomasz Chmielewski
2009-10-22 10:51 ` Avi Kivity
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=4ADD7CFF.1080003@wpkg.org \
--to=mangoo@wpkg.org \
--cc=kvm@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.