Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755193Ab2JBRZa (ORCPT ); Tue, 2 Oct 2012 13:25:30 -0400 Received: from smtp.getmail.no ([84.208.15.66]:34599 "EHLO smtp.getmail.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755160Ab2JBRZ2 (ORCPT ); Tue, 2 Oct 2012 13:25:28 -0400 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=iso-8859-15; format=flowed; delsp=yes In-reply-to: <1349146202.7086.23.camel@marge.simpson.net> References: <1349064397.6957.26.camel@marge.simpson.net> <1349146202.7086.23.camel@marge.simpson.net> Subject: Re: The 10ms averager in fair.c + granularity To: linux-kernel@vger.kernel.org Date: Tue, 02 Oct 2012 19:25:26 +0200 From: Uwaysi Bin Kareem Message-id: User-Agent: Opera Mail/11.10 (Linux) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 995 Lines: 21 The 10 ms averager is not the only strange thing. Obviously there are some good things in this scheduler, since it performs quite well. But I am not criticising the good. But the documentation makes a distinction between desktop and server with the "resolution" parameter. I tried some values and "echo 4500000000 > sched_min_granularity_ns" which would be strongly tuned towards server, only reduced jitter in doom 3. Which means it is a good value for desktop. So that doesn`t seem to cohere with what is stated aswell. Anyway.. One needs to get really deep into the code to understand why it is so. So you know, I don know. I am going to take a look at it, and there probably won`t be any patch anytime soon. Peace Be With You. -- 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/