Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753466AbZLVPkj (ORCPT ); Tue, 22 Dec 2009 10:40:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752155AbZLVPkj (ORCPT ); Tue, 22 Dec 2009 10:40:39 -0500 Received: from cantor.suse.de ([195.135.220.2]:43573 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750948AbZLVPki (ORCPT ); Tue, 22 Dec 2009 10:40:38 -0500 Date: Tue, 22 Dec 2009 16:40:37 +0100 Message-ID: From: Takashi Iwai To: =?UTF-8?B?w4lyaWM=?= Piel Cc: Maciej Rutecki , Linux Kernel Mailing List , alsa-devel@alsa-project.org, perex@perex.cz, "Rafael J. Wysocki" Subject: Re: [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise In-Reply-To: <4B30E2AD.8010709@tremplin-utc.net> References: <8db1092f0912200927y7cdab36ftd1f73d56cd89763f@mail.gmail.com> <8db1092f0912211012mcdd6639oaaf0bddc118e7d66@mail.gmail.com> <4B2FC7B2.7000001@tremplin-utc.net> <4B308E28.1090609@tremplin-utc.net> <4B30E2AD.8010709@tremplin-utc.net> User-Agent: Wanderlust/2.15.6 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.7 Emacs/23.1 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 999 Lines: 29 At Tue, 22 Dec 2009 16:15:57 +0100, Éric Piel wrote: > > Op 22-12-09 10:17, Takashi Iwai schreef: > : > >>> It shouldn't. The polling mode doesn't give any behavioral change, > >>> and the CPU usage can't be that high. > >>> > >>> Try is to pass bdl_pos_adj=0 option. This should reduce the CPU hog, > >>> at least. But it doesn't mean it's the right fix... > >> I'll try > Just tried: it doesn't have any effect, as enable_msi=0. Still 25% of > the CPU used, as before. > $ cat bdl_pos_adj > 0,-1,-1,-1,-1,-1,-1,-1 > > Could it be coming from the beeper? Also, just in case it can help, > attached is my .config . Do you have multiple HD-audio devices? See /proc/asound/cards. If there are multiple, you need to pass a value for each. 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/