netdev - Re: SO_REUSEPORT - can it be done in kernel?

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Message-ID: <20110301121544.GA7166@gondor.apana.org.au>
Date:	Tue, 1 Mar 2011 20:15:44 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>, rick.jones2@...com,
	therbert@...gle.com, wsommerfeld@...gle.com,
	daniel.baluta@...il.com, netdev@...r.kernel.org
Subject: Re: SO_REUSEPORT - can it be done in kernel?

On Tue, Mar 01, 2011 at 07:01:12AM -0500, Thomas Graf wrote:
> On Tue, Mar 01, 2011 at 12:45:09PM +0100, Eric Dumazet wrote:
> 
> This is how perf top looks like with SO_REUSEPORT

Yeah I think Eric is spot on.  The remaining bottleneck is because
we hash all outbound packets from a single socket to a single TX
queue, despite the fact that they were produced on difference CPUs.

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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