From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263743AbUHSH5Z (ORCPT ); Thu, 19 Aug 2004 03:57:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263770AbUHSH5Z (ORCPT ); Thu, 19 Aug 2004 03:57:25 -0400 Received: from mx2.elte.hu ([157.181.151.9]:1931 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S263743AbUHSH5W (ORCPT ); Thu, 19 Aug 2004 03:57:22 -0400 Date: Thu, 19 Aug 2004 09:57:52 +0200 From: Ingo Molnar To: Lee Revell Cc: Roger Luethi , linux-kernel , Felipe Alfaro Solana , Florian Schmidt Subject: Re: [patch] voluntary-preempt-2.6.8.1-P0 Message-ID: <20040819075752.GA2360@elte.hu> References: <1092382825.3450.19.camel@mindpipe> <20040813104817.GI8135@elte.hu> <1092432929.3450.78.camel@mindpipe> <20040814072009.GA6535@elte.hu> <20040815115649.GA26259@elte.hu> <1092612264.867.9.camel@krustophenia.net> <20040816080745.GA18406@k3.hellgate.ch> <1092696835.13981.61.camel@krustophenia.net> <20040817205255.GA32252@k3.hellgate.ch> <1092776417.1297.4.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1092776417.1297.4.camel@krustophenia.net> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Lee Revell wrote: > > > What do you think of Ingo's solution of trying to move the problematic > > > call to mdio_read out of the spinlocked section? It does seem that the > > > > Can't comment on that, I missed it. I am aware that locking in via-rhine > > needs work, though, it's one of the things I haven't touched. > > > > > awfully long time. In a live audio setting you would actually get lots > > > of media events. > > > > Don't trip over the network cables. Duh. > > > > You might want to intentionally plug or unplug them. Live music != a > server room. Think laptop DJs. It would be bad if plugging into the > network caused a click in your sound output - this could be VERY loud > depnding on the setting! right now the mdio_read() latency causes a latency of 140 usecs which isnt that bad. But looking at it in isolation, mdio_read() is 70 usecs a pop which is excessive for a kernel function. Ingo