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

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Message-ID: <1298988419.3284.107.camel@edumazet-laptop>
Date:	Tue, 01 Mar 2011 15:06:59 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Thomas Graf <tgraf@...radead.org>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	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?

Le mardi 01 mars 2011 à 08:50 -0500, Thomas Graf a écrit :
> On Tue, Mar 01, 2011 at 08:19:51PM +0800, Herbert Xu wrote:
> > On Tue, Mar 01, 2011 at 07:18:29AM -0500, Thomas Graf wrote:
> > >
> > > 
> > > ... makes it use CPU 5 for rxq2 and the qps goes up from 250kqps to 270kqps
> > 
> > I think the increase here comes from the larger number of packets
> > in flight more than anything.
> > 
> > The bottleneck is still the TX queue (both software and hardware).
> 
> Disabled netfilter and reran test
> 
> Now does ~316kqps (rx was split over 2 queues)

Would be nice to cpu affine named to _not_ run on CPU11, just to
specialize it for TX completions and have softirq time percentage and
"perf top -C 11 " results

Thanks


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