From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751404AbWDWOSJ (ORCPT ); Sun, 23 Apr 2006 10:18:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751405AbWDWOSJ (ORCPT ); Sun, 23 Apr 2006 10:18:09 -0400 Received: from smtprelay05.ispgateway.de ([80.67.18.43]:36808 "EHLO smtprelay05.ispgateway.de") by vger.kernel.org with ESMTP id S1751403AbWDWOSH (ORCPT ); Sun, 23 Apr 2006 10:18:07 -0400 From: Ingo Oeser To: "David S. Miller" Subject: Re: Van Jacobson's net channels and real-time Date: Sun, 23 Apr 2006 16:15:42 +0200 User-Agent: KMail/1.9.1 Cc: netdev@axxeo.de, simlo@phys.au.dk, linux-kernel@vger.kernel.org, mingo@elte.hu, netdev@vger.kernel.org References: <200604211852.47335.netdev@axxeo.de> <20060422.225639.93889487.davem@davemloft.net> In-Reply-To: <20060422.225639.93889487.davem@davemloft.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200604231615.43399.ioe-lkml@rameria.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Dave, On Sunday, 23. April 2006 07:56, David S. Miller wrote: > > If cacheline bouncing because of the shared filled_entries becomes an issue, > > you are receiving or sending a lot. > > Cacheline bouncing is the core issue being addressed by this > data structure, so we really can't consider your idea seriously. Ok, I can see it now more clearly. Many thanks for clearing that up in the other replies. I had a major misunderstanding there. > I've just got an off-by-one error, no need to wreck the entire > data structure just to solve that :-) Yes, you are right. But even then I can still implement the reserve/commit once you provide the helpers for producer_space and consumer_space. Regards Ingo Oeser