netdev - Re: Integration of Open vSwitch

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Date:	Wed, 30 Nov 2011 21:40:28 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	jhs@...atatu.com
Cc:	Jesse Gross <jesse@...ira.com>, netdev <netdev@...r.kernel.org>,
	dev@...nvswitch.org, David Miller <davem@...emloft.net>,
	Stephen Hemminger <shemminger@...tta.com>,
	Chris Wright <chrisw@...hat.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: Integration of Open vSwitch

On Wed, Nov 30, 2011 at 08:14:51AM -0500, jamal wrote:
> On Wed, 2011-11-30 at 15:00 +0800, Herbert Xu wrote:
> 
> 
> > The other factor I considered is scalability.  The OVS code as is
> > is not really friendly to SMP/NUMA scalability (but as Eric pointed,
> > neither is the classifier/action layer). 
> 
> Did you mean the qdisc funnel-to-interface part which Eric is hopefully
> going to work on now that bql is in? classifier/action happens way
> before that.

I actually meant the scalability with adding/deleting flows,
or in the case with qdiscs, filters.

OVS is quite scalable on the fast-path, but when it comes to
new flows, you have a bottleneck.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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