From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266622AbUHaStl (ORCPT ); Tue, 31 Aug 2004 14:49:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266626AbUHaStl (ORCPT ); Tue, 31 Aug 2004 14:49:41 -0400 Received: from mx2.elte.hu ([157.181.151.9]:34764 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S266622AbUHaStj (ORCPT ); Tue, 31 Aug 2004 14:49:39 -0400 Date: Tue, 31 Aug 2004 20:50:54 +0200 From: Ingo Molnar To: Lee Revell Cc: Mark_H_Johnson@raytheon.com, "K.R. Foley" , linux-kernel , Felipe Alfaro Solana , Daniel Schmitt , alsa-devel Subject: Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 Message-ID: <20040831185054.GC25485@elte.hu> References: <1093972819.5403.8.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1093972819.5403.8.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, autolearn=not spam, 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: > Hmm, looks like the es1371 takes ~0.5 ms to set the DAC rate. The > ALSA team would probably be able to help. Takashi, any ideas? i'd suggest to postpone this issue for the time being, the SMP hardware in question produces 'mysterious' latencies in other, very unexpected places as well. I suspect there's some issue that hits whatever code happens to run - and the es1371 driver is used for the latency testing. So i believe it's just an innocent bystander. I'd suggest to look at these again if they pop up after the 'mysterious' latency source is found. Ingo