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

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Message-ID: <20110301132718.GA8301@gondor.apana.org.au>
Date:	Tue, 1 Mar 2011 21:27:18 +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
> 
> ----------------------------------------------------------------------------------------------------------------------------------
>    PerfTop:   27498 irqs/sec  kernel:50.5%  exact:  0.0% [1000Hz cpu-clock-msecs],  (all, CPU: 1)
> ----------------------------------------------------------------------------------------------------------------------------------
> 
>              samples  pcnt function                      DSO
>              _______ _____ _____________________________ __________________
> 
>             16464.00  6.0% isc_rwlock_lock               libisc.so.62.0.1
>             15462.00  5.7% intel_idle                    [kernel.kallsyms]

So was this a RHEL6 kernel? I wonder if that is what's making it
perform better.

I guess we'll find out tomorrow.

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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