From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755885Ab3APO0u (ORCPT ); Wed, 16 Jan 2013 09:26:50 -0500 Received: from smtp.domeneshop.no ([194.63.252.54]:40208 "EHLO smtp.domeneshop.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752471Ab3APO0t (ORCPT ); Wed, 16 Jan 2013 09:26:49 -0500 Message-ID: <50F6B8C3.9060500@paradoxuncreated.com> Date: Wed, 16 Jan 2013 15:27:15 +0100 From: Ove Karlsen User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130107 Thunderbird/17.0.2 MIME-Version: 1.0 To: LKML Subject: Re: One last tweak for perfection. References: <50F6B254.2020801@paradoxuncreated.com> <50F6B30F.6010207@paradoxuncreated.com> <50F6B868.7000304@paradoxuncreated.com> In-Reply-To: <50F6B868.7000304@paradoxuncreated.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/16/2013 3:25 PM, Ove Karlsen wrote: > On 1/16/2013 3:02 PM, Ove Karlsen wrote: >> What kernelthreads _needs_ to run? So I can put them on max pri >> renice, along with reniced X and app. And everything else on idle >> priority. So to make the app run at max efficiency, and not be >> starved by kernelthreads waiting. (Or any other consideration, for >> giving maximal cpu to app. Even small tweaks.) >> >> To read my research so far, (and I have done much, about 2 years of >> tweakinŽ on and off.) Please see >> http://paradoxuncreated.com/Blog/wordpress/?p=2268 >> >> Main points, no highres timer, 90hz timer, + a lot of smaller tweaks. >> This makes an amazing linux-desktop, for gaming, video and audio. The >> popular computer for everyman. Also boosts performance, for >> resource-constrained systems. >> >> For more advanced hacking, one could also get in there, and make >> several HZ timers, extremely low ones, for the components who only >> require that, and 90hz for video-components, for instance (low >> video/frame jitter), and higher if anything should require that. >> >> Also system-wide, software should be synced to hz, if required for >> lowest jitter, such as animations and videoplayers, and videoplayers >> automatically change refresh rate to a multiple of video framerate. >> >> Peace Be With You. > PS: I forgot the realtime sincs of drivers. HZ is really not an issue > to debate for me, 90 hz is sufficient, and only to userspace, right? > So yea, forget the talk on HZ. > > Peace Be With You. And "synced to hz" with regards to video, is the screen hz ofcourse, not kernel. Peace Be With You.