Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754136AbZIGSe2 (ORCPT ); Mon, 7 Sep 2009 14:34:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753193AbZIGSe1 (ORCPT ); Mon, 7 Sep 2009 14:34:27 -0400 Received: from nox.protox.org ([88.191.38.29]:60627 "EHLO nox.protox.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752441AbZIGSe1 (ORCPT ); Mon, 7 Sep 2009 14:34:27 -0400 X-Greylist: delayed 550 seconds by postgrey-1.27 at vger.kernel.org; Mon, 07 Sep 2009 14:34:27 EDT Subject: Re: BFS vs. mainline scheduler benchmarks and measurements From: Jerome Glisse To: Con Kolivas Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Peter Zijlstra , Mike Galbraith In-Reply-To: <7574305f0909062050k4b0d4dd2pf9e71724caf8a189@mail.gmail.com> References: <20090906205952.GA6516@elte.hu> <7574305f0909062050k4b0d4dd2pf9e71724caf8a189@mail.gmail.com> Content-Type: text/plain Date: Mon, 07 Sep 2009 20:20:24 +0200 Message-Id: <1252347624.2974.55.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 (2.26.3-1.fc11) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1492 Lines: 31 On Mon, 2009-09-07 at 13:50 +1000, Con Kolivas wrote: > /me checks on his distributed computing client's progress, fires up > his next H264 encode, changes music tracks and prepares to have his > arse whooped on quakelive. > -- For such computer usage i would strongly suggest that you look into GPU driver development there is a lot of performances to win in this area and my feeling is that you can improve what you are doing (games -> opengl (so GPU), H264 (encoding is harder to accelerate with a GPU but for decoding and displaying it you definitely want to involve the GPU), and tons of others things you are doing on your linux desktop would go faster if GPU was put to more use. A wild guess is that you can get a 2 or even 3 figures percentage improvement with better GPU driver. My point is that i don't think a linux scheduler improvement (compared to what we have now) will give a significant boost for the linux desktop, on the contrary any even slight improvement to the GPU driver stack can give you a boost. Another way of saying that, there is no point into prioritizing X or desktop app if CPU has to do all the drawing by itself (CPU is several magnitude slower than GPU at doing such kind of task). Regards, Jerome Glisse -- 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/