From: "Michael S. Tsirkin" <mst@redhat.com>
To: Anton Kuchin <antonkuchin@yandex-team.ru>
Cc: qemu-devel@nongnu.org, jasowang@redhat.com
Subject: Re: [Qemu-devel] Is IOThread for virtio-net a good idea?
Date: Mon, 11 Feb 2019 09:52:01 -0500 [thread overview]
Message-ID: <20190211095049-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <e6c30bdd-6cd0-ee9b-9fdf-cc8eaa54f7cc@yandex-team.ru>
On Mon, Feb 11, 2019 at 04:40:44PM +0300, Anton Kuchin wrote:
> As far as I can see currently IOThread offloading is used only for block
> devices and all others are emulated by main thread.
>
> I expect that network devices can also benefit from processing in separate
> thread but I couldn't find any recent work in this direction. I'm going to
> implement a PoC but I want to ask if you know any previous attempts and do
> you know why it can be a total waste of time. Are there fundamental
> obstacles that prevent network emulation handling in IOThread?
No but vhost-net is there. Unlike block where you gain lots of
functionality such as snapshots there seems to be little to
be gained by doing it in userspace.
--
MST
next prev parent reply other threads:[~2019-02-11 14:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-11 13:40 [Qemu-devel] Is IOThread for virtio-net a good idea? Anton Kuchin
2019-02-11 14:52 ` Michael S. Tsirkin [this message]
2019-02-12 3:55 ` Stefan Hajnoczi
2019-02-12 4:35 ` Michael S. Tsirkin
2019-02-12 6:59 ` Jason Wang
2019-02-12 6:41 ` Jason Wang
2019-02-12 6:48 ` Jason Wang
2019-02-12 7:00 ` Jason Wang
2019-02-12 18:40 ` Michael S. Tsirkin
2019-02-13 9:38 ` Jason Wang
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=20190211095049-mutt-send-email-mst@kernel.org \
--to=mst@redhat.com \
--cc=antonkuchin@yandex-team.ru \
--cc=jasowang@redhat.com \
--cc=qemu-devel@nongnu.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).