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
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