From: Alex Williamson <alex.williamson@redhat.com>
To: erik.rull@rdsoftware.de
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Enabling Hyperthreading for Guest
Date: Wed, 21 Sep 2011 14:02:51 -0600 [thread overview]
Message-ID: <1316635372.4443.104.camel@bling.home> (raw)
In-Reply-To: <0NZZCL-1R6MRY0ITD-0002EJ@icpu820.kundenserver.de>
On Wed, 2011-09-21 at 15:02 +0200, erik.rull@rdsoftware.de wrote:
> Hi all,
>
> I'm searching for a switch to enable hyperthreading for my Windows XP
> Guest. Currently I only get 2 cores available in the taskmanager but listed
> 4 or 8 (depending on the smp-switch).
>
> After having read that XP supports only up to 2 cores but also with HT this
> should show me 4 cores.
> What must I do to get 4 cores visible in the Windows taskmanager?
> Is there a QEMU-BIOS option to enable?
See the extended -smp options:
-smp n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]
set the number of CPUs to 'n' [default=1]
maxcpus= maximum number of total cpus, including
offline CPUs for hotplug, etc
cores= number of CPU cores on one socket
threads= number of threads on one CPU core
sockets= number of discrete sockets in the system
Try something like:
-smp 4,cores=2,threads=2,sockets=1
Alex
next prev parent reply other threads:[~2011-09-21 20:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-21 13:02 [Qemu-devel] Enabling Hyperthreading for Guest erik.rull
2011-09-21 20:02 ` Alex Williamson [this message]
2011-09-22 16:43 ` Erik Rull
2011-09-22 17:15 ` Alex Williamson
2011-09-23 15:29 ` Erik Rull
2011-09-23 16:49 ` Alex Williamson
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