From: Anthony Liguori <anthony@codemonkey.ws>
To: Ronen Hod <rhod@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [RFC] Migration convergence - a suggestion
Date: Tue, 20 Dec 2011 07:39:36 -0600 [thread overview]
Message-ID: <4EF09018.3010907@codemonkey.ws> (raw)
In-Reply-To: <4EF0340C.9000005@redhat.com>
On 12/20/2011 01:06 AM, Ronen Hod wrote:
> Well the issue is not new, anyhow, following a conversation with Orit ...
>
> Since we want the migration to finish, I believe that the "migration speed"
> parameter alone cannot do the job.
> I suggest using two distinct parameters:
> 1. Migration speed - will be used to limit the network resources utilization
> 2. aggressionLevel - A number between 0.0 and 1.0, where low values imply
> minimal interruption to the guest, and 1.0 mean that the guest will be
> completely stalled.
>
> In any case the migration will have to do its work and finish given any actual
> migration-speed, so even low aggressionLevel values will sometimes imply that
> the guest will be throttled substantially.
>
> The algorithm:
> The aggressionLevel should determine the targetGuest%CPU (how much CPU time we
> want to allocate to the guest)
QEMU has no way to limit the guest CPU time.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2011-12-20 13:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-20 7:06 [Qemu-devel] [RFC] Migration convergence - a suggestion Ronen Hod
2011-12-20 13:39 ` Anthony Liguori [this message]
2011-12-21 9:47 ` Ronen Hod
2011-12-21 14:11 ` Anthony Liguori
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=4EF09018.3010907@codemonkey.ws \
--to=anthony@codemonkey.ws \
--cc=qemu-devel@nongnu.org \
--cc=rhod@redhat.com \
/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.