Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751570AbZLVJP1 (ORCPT ); Tue, 22 Dec 2009 04:15:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750956AbZLVJPZ (ORCPT ); Tue, 22 Dec 2009 04:15:25 -0500 Received: from mailservice.tudelft.nl ([130.161.131.5]:2819 "EHLO mailservice.tudelft.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750822AbZLVJPY (ORCPT ); Tue, 22 Dec 2009 04:15:24 -0500 X-Spam-Flag: NO X-Spam-Score: -14.389 Message-ID: <4B308E28.1090609@tremplin-utc.net> Date: Tue, 22 Dec 2009 10:15:20 +0100 From: =?UTF-8?B?w4lyaWMgUGllbA==?= User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091211 Mandriva/3.0-4mdv2010.1 (2010.1) Thunderbird/3.0 MIME-Version: 1.0 To: Takashi Iwai 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 References: <8db1092f0912200927y7cdab36ftd1f73d56cd89763f@mail.gmail.com> <8db1092f0912211012mcdd6639oaaf0bddc118e7d66@mail.gmail.com> <4B2FC7B2.7000001@tremplin-utc.net> In-Reply-To: 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: 956 Lines: 27 Op 22-12-09 08:04, Takashi Iwai schreef: > At Mon, 21 Dec 2009 20:08:34 +0100, > Éric Piel wrote: : >> Could it be coming from this timeout? > > 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 > > Another thing to try is to replace the whole HD-audio stack with the > last working one (was it 2.6.32?), and check whether it works with > 2.6.32 core. Could you give more details on how to do this? Does it consist in taking the sound/ directory of 2.6.32 and copying it over 2.6.33-rc1 ? Or less files? Eric -- 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/