netdev - Re: [PATCH net-next] net: add a prefetch in socket backlog processing

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Message-ID: <1335854551.11396.28.camel@edumazet-glaptop>
Date:	Tue, 01 May 2012 08:42:31 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net: add a prefetch in socket backlog
 processing

On Tue, 2012-05-01 at 08:34 +0200, Eric Dumazet wrote:

> Basically this patch avoids one memory cache miss per iteration.
> 

This patch was the easy part.

I am now working on refining __skb_dequeue() API to avoid the cache line
miss when we perform the __skb_unlink() and allow a prefetch(next) as
well, to speedup process_backlog().



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