From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753288AbXCMPyE (ORCPT ); Tue, 13 Mar 2007 11:54:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753291AbXCMPyD (ORCPT ); Tue, 13 Mar 2007 11:54:03 -0400 Received: from ug-out-1314.google.com ([66.249.92.174]:12815 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753288AbXCMPyB (ORCPT ); Tue, 13 Mar 2007 11:54:01 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=bwHmHvR4rXhqjn7tH/XEu9dJ19qPZUE2i0mwvy9K3YjHROi1H1KMvPBevytxd0Mq9NaKWtROru5/mgkV9gFPi23tDMgB7I3llwhVU/77TnDGMdk3PpJgal0QamqOxCIIunOQPJajGpXNXCxHb+IJgxWttnsI10cmOk9KWTApyvE= Message-ID: <75b66ecd0703130853p4c7d029en2405caee4447d29e@mail.gmail.com> Date: Tue, 13 Mar 2007 11:53:56 -0400 From: "Lee Revell" To: "Ash Milsted" Subject: Re: [ck] RSDL v0.30 cpu scheduler for mainline kernels Cc: "Con Kolivas" , "linux kernel mailing list" , "ck list" In-Reply-To: <20070313153514.428dc3e1.thatistosayiseenem@gawab.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200703121058.11966.kernel@kolivas.org> <20070313153514.428dc3e1.thatistosayiseenem@gawab.com> X-Google-Sender-Auth: d93693f95c91cf73 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 3/13/07, Ash Milsted wrote: > Desktop use whilst talking on Wengophone (run at nice -5): Under RSDL > some GUI use e.g. opening a new folder in nautilus causes pops (buffer > underruns) which do not occur with mainline. I suppose the changes in > RSDL might require a lower nice value for equivalent performance, but > (as a user) I am limited to -5. > > Low-latency audio with JACK and Ardour2: Rock-solid performance with > either scheduler.. realtime works nicely. Sounds like Wengophone is broken. It should be using RT threads for time critical work, as JACK and Ardour2 are doing. No scheduler can help if the apps are not correctly written... Lee