From: Alejandro Comisario <alejandro.comisario@mercadolibre.com>
To: kvm@vger.kernel.org
Subject: Re: kvm cpu usage allocation
Date: Thu, 20 Feb 2014 11:31:13 -0300 [thread overview]
Message-ID: <CAMrG31waB0oQ8WjFHsMi8dZhB5AifYxZyrkO8dNRKVW+NNvVsw@mail.gmail.com> (raw)
In-Reply-To: <CAMrG31zA6G-LyoxePODPZYHKmtWh1_U_eVyUR5_7xF+jO-c-sg@mail.gmail.com>
any help on this one ?
thanks!
@lejandrito
On Wed, Feb 19, 2014 at 6:42 PM, Alejandro Comisario
<alejandro.comisario@mercadolibre.com> wrote:
> Hi everyone.
> We are having a private cloud with more than 1000 phy servers.
> Each server has 128GB of RAM and 24 cores (2 heaxacores with HT
> enabled), but the amount of vms running on those servers versus the
> flavor (amount of CPU) made us use about 80 VCPUS.
>
> The questions are as follow.
>
> * is there a fine documentation of HOW kvm handles cpu allocation/pin
> per vm in an scenario like this one ?
> * is there also, a documentation that explains under a circumstance
> where a VM needs more processing power, how priority is managed ?
> * is there a way to define some kind of politics or rules to have
> specific cpu pinning for specific vms ?
>
> So, well ... any extensive information to understand how KVM behaves
> would be great!
> Thanks as allways!
>
> ----------
> @lejandrito
next prev parent reply other threads:[~2014-02-20 14:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-19 21:42 kvm cpu usage allocation Alejandro Comisario
2014-02-20 14:31 ` Alejandro Comisario [this message]
2014-02-20 23:00 ` Marcelo Tosatti
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