From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lennart Poettering Subject: Re: [pulseaudio-discuss] pulseaudio eats 19% CPU power in Fedora 12 Date: Mon, 19 Apr 2010 16:48:34 +0200 Message-ID: <20100419144832.GC1048@tango.0pointer.de> References: <20100414075658.GA26283@localhost> <20100419032856.GA13629@tango.0pointer.de> <4BCBE81F.6090606@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from tango.0pointer.de (tango.0pointer.de [85.214.72.216]) by alsa0.perex.cz (Postfix) with ESMTP id 4D2F12475D for ; Mon, 19 Apr 2010 16:49:07 +0200 (CEST) Content-Disposition: inline In-Reply-To: <4BCBE81F.6090606@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: General PulseAudio Discussion Cc: "Fu, Michael" , alsa-devel@alsa-project.org, Wu Fengguang , "Bu, Long" List-Id: alsa-devel@alsa-project.org On Mon, 19.04.10 13:20, Shuang He (shuang.he@intel.com) wrote: Please stop the cross-posting. > > current latency: 444.25 ms > requested latency: 31.25 ms So, this is interesting: the client requested 30ms (which is needlessly low, but that's another question), but the server ended up providing only 444 ms! That is incredibly high and points to the fact that PA probably ran into quite a few dropouts before this, presumably due to incorrect timing or suchlike, and hence bumped up the minimal latency all the time, and bumped down the sleeping time, hence eincreasing the CPU load. Almost certainly your audio driver is at fault here. Check syslog for any comments about that. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4