From: Paolo Bonzini <bonzini@gnu.org>
To: riccardo.brunetti@dnshosting.it, Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, Paolo Bonzini <paolo.bonzini@gmail.com>
Subject: Re: CPU Overcommitting question
Date: Fri, 18 Jul 2014 23:30:15 +0200 [thread overview]
Message-ID: <53C991E7.1000909@gnu.org> (raw)
In-Reply-To: <705c3521045351691bbb7e00f52de710@dnshosting.it>
Il 18/07/2014 18:49, riccardo.brunetti@dnshosting.it ha scritto:
> So, it should be ok to have the first two options, but also considering
> that with hyperthreading instead of 12 cores we can consider 24? Thus we
> can go with:
>
> 1) Assign vCPUs so that vCPU(VM1) + vCPU(VM2) = total number of cores
> (24) (both VMs have < 24 vCPUs) (ie. 18+6)
> 2) Assign vCPUs so that vCPU(VM1) + vCPU(VM2) > total number of cores
> (24) (both VMs have <= 24 vCPUs) (ie. 24+10)
Yes.
Something between 12 and 24 will probably give the best performance.
Paolo
next prev parent reply other threads:[~2014-07-18 21:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-18 13:06 CPU Overcommitting question Riccardo Brunetti
2014-07-18 15:30 ` Paolo Bonzini
2014-07-18 16:49 ` riccardo.brunetti
2014-07-18 21:30 ` Paolo Bonzini [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-07-18 12:27 Riccardo Brunetti
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=53C991E7.1000909@gnu.org \
--to=bonzini@gnu.org \
--cc=kvm@vger.kernel.org \
--cc=paolo.bonzini@gmail.com \
--cc=pbonzini@redhat.com \
--cc=riccardo.brunetti@dnshosting.it \
/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.