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

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Date:	Mon, 28 Feb 2011 15:22:06 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	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 lundi 28 février 2011 à 22:13 +0800, Herbert Xu a écrit :
> On Mon, Feb 28, 2011 at 02:32:51PM +0100, Eric Dumazet wrote:
> >
> > Now, input path can run without finding socket locked by xmit path, so
> > skb are queued into receive queue, not backlog one.
> 
> Indeed, I think this is what Dave alluded to earlier.  This will
> eventually have to be dealt with but for now the data rate is low
> enough that it isn't killing us.

Not sure how you read this ;)

I said that before your patches, a sender was consuming lot of time to
transfert frames from backlog to receive queue right before releasing
socket lock.

Now, the receive path doesnt slow down the senders, and vice versa.

:)


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