netdev - Re: [PATCH net-next] bnx2x: reduce skb truesize by 50%

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Message-Id: <20111114.142117.1578594312371186159.davem@davemloft.net>
Date:	Mon, 14 Nov 2011 14:21:17 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	eilong@...adcom.com, bhutchings@...arflare.com,
	pstaszewski@...are.pl, netdev@...r.kernel.org, tgraf@...radead.org,
	therbert@...gle.com, hadi@...atatu.com, shemminger@...tta.com
Subject: Re: [PATCH net-next] bnx2x: reduce skb truesize by 50%

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 14 Nov 2011 16:57:45 +0100

> Le lundi 14 novembre 2011 à 07:25 +0100, Eric Dumazet a écrit :
>> Le lundi 14 novembre 2011 à 00:08 -0500, David Miller a écrit :
>> 
>> > I fully support bringing this thing back to life :-)
>> 
>> I'll make extensive tests today and provide two patches when ready, with
>> all performance results.
>> 
>> Some prefetch() calls will be removed, since build_skb() provides
>> already cache hot skb.
> 
> Impressive results :
> 
> before : 720.000 pps
> after :  820.000 pps
> 
> [ One mono threaded application receiving UDP messages on a single
> socket, asking IP_PKTINFO ancillary info ]

Sweeeeeet.

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