Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262939AbUCRTWb (ORCPT ); Thu, 18 Mar 2004 14:22:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262941AbUCRTWb (ORCPT ); Thu, 18 Mar 2004 14:22:31 -0500 Received: from ns.suse.de ([195.135.220.2]:18858 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S262939AbUCRTW1 (ORCPT ); Thu, 18 Mar 2004 14:22:27 -0500 Date: Thu, 18 Mar 2004 20:20:17 +0100 Message-ID: From: Takashi Iwai To: Andrew Morton Cc: andrea@suse.de, mjy@geizhals.at, linux-kernel@vger.kernel.org Subject: Re: CONFIG_PREEMPT and server workloads In-Reply-To: <20040318111807.7fa62340.akpm@osdl.org> References: <40591EC1.1060204@geizhals.at> <20040318060358.GC29530@dualathlon.random> <20040318110159.321754d8.akpm@osdl.org> <20040318111807.7fa62340.akpm@osdl.org> User-Agent: Wanderlust/2.10.1 (Watching The Wheels) SEMI/1.14.5 (Awara-Onsen) FLIM/1.14.5 (Demachiyanagi) APEL/10.6 MULE XEmacs/21.4 (patch 13) (Rational FORTRAN) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 916 Lines: 29 At Thu, 18 Mar 2004 11:18:07 -0800, Andrew Morton wrote: > > Takashi Iwai wrote: > > > > oh, sorry, maybe i forgot to tell you that it has been already there > > :) > > > > # echo 1 > /proc/asound/card0/pcm0p/xrun_debug > > > > this will show the stacktrace when a buffer overrun/underrun is > > detected in the irq handler. it's not perfect, though. > > heh, you just shrunk my todo list by 0.01%. > > Have you had any useful reports from this feature? not much yet. i should write this feature in documentation now :) also, the total buffer underrun/overrun problem doesn't happen *so* often (except for the heavy i/o load, etc). Takashi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/