From: Todd And Margo Chester <toddandmargo@gmail.com>
To: kvm@vger.kernel.org
Subject: What are the rules for hyperthreaded CPUs?
Date: Sun, 04 Dec 2011 17:26:31 -0800 [thread overview]
Message-ID: <4EDC1DC7.7030605@gmail.com> (raw)
> Hi All,
>
> My host has an i7-960 processor (4 cores, 8 hypterthreaded cores.)
> /proc/cpuinfo on my host shows 8 processors.
>
> On my Fedora Core 16 guest, /proc/cpuinfo shows 4 processors.
>
> Question: what is the maximum number of processors I can assign to my
> guest? 4 or 8? What are the rules for Hyperthreading?
>
> Many thanks,
> -T
Figured it out. The max cores is the number of hyperthreaded cores
(eight in my case).
My mistake was that in virt-manager, processor, I was not clicking
on "Copy host CPU configuration" button. Without that, everything
I tried to configure came out as single CPUs.
-T
next reply other threads:[~2011-12-05 1:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-05 1:26 Todd And Margo Chester [this message]
2011-12-05 7:42 ` What are the rules for hyperthreaded CPUs? Michael Tokarev
-- strict thread matches above, loose matches on Subject: below --
2011-12-05 0:41 Todd And Margo Chester
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=4EDC1DC7.7030605@gmail.com \
--to=toddandmargo@gmail.com \
--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.