From: Martin Josefsson <gandalf@mjufs.se>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: Eric Dumazet <dada1@cosmosbay.com>,
Tom Herbert <therbert@google.com>,
Andi Kleen <andi@firstfloor.org>,
netdev@vger.kernel.org, David Miller <davem@davemloft.net>
Subject: Re: [PATCH] Software receive packet steering
Date: Wed, 22 Apr 2009 16:33:17 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.62.0904221628330.10428@wlug.westbo.se> (raw)
In-Reply-To: <20090421084636.198b181e@nehalam>
On Tue, 21 Apr 2009, Stephen Hemminger wrote:
> I would like to see some way to have multiple CPU's pulling packets and adapting
> the number of CPU's being used based on load. Basically, turn all device is into
> receive multiqueue. The mapping could be adjusted by user level (see irqbalancer).
I've been toying with the irqbalancer idea as well.
Set the number of software "queues" high and have a mapping table of
queue->cpu and then let irqbalanced which has knowledge of cpu cache
hirarchy etc balance the load by changing the mapping table as it sees
fit.
This would make it fairly fine grained so that it could work reasonably
well even if you have very few but very performance demanding clients.
Having "collisions" in the queues in that situation isn't very good.
/Martin
next prev parent reply other threads:[~2009-04-22 14:33 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-08 22:48 [PATCH] Software receive packet steering Tom Herbert
2009-04-08 23:08 ` Stephen Hemminger
2009-04-08 23:09 ` Stephen Hemminger
2009-04-08 23:15 ` David Miller
2009-04-09 16:43 ` Tom Herbert
2009-04-09 18:23 ` Ben Hutchings
2009-04-09 21:17 ` David Miller
2009-04-09 0:36 ` David Miller
2009-04-09 4:40 ` Tom Herbert
2009-04-09 5:24 ` David Miller
2009-04-20 10:32 ` Andi Kleen
2009-04-20 10:46 ` David Miller
2009-04-21 3:26 ` Tom Herbert
2009-04-21 9:48 ` Eric Dumazet
2009-04-21 15:46 ` Stephen Hemminger
2009-04-21 18:52 ` Tom Herbert
2009-04-22 9:21 ` David Miller
2009-04-22 15:46 ` Tom Herbert
2009-04-22 18:49 ` Rick Jones
2009-04-22 20:44 ` Jesper Dangaard Brouer
2009-04-23 6:58 ` Jens Axboe
2009-04-23 7:25 ` David Miller
2009-04-23 7:29 ` Jens Axboe
2009-04-23 9:12 ` Jens Laas
2009-04-22 14:33 ` Martin Josefsson [this message]
2009-04-23 7:34 ` David Miller
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=Pine.LNX.4.62.0904221628330.10428@wlug.westbo.se \
--to=gandalf@mjufs.se \
--cc=andi@firstfloor.org \
--cc=dada1@cosmosbay.com \
--cc=davem@davemloft.net \
--cc=netdev@vger.kernel.org \
--cc=shemminger@vyatta.com \
--cc=therbert@google.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 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).