From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265200AbUGZLNa (ORCPT ); Mon, 26 Jul 2004 07:13:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265201AbUGZLNa (ORCPT ); Mon, 26 Jul 2004 07:13:30 -0400 Received: from smtp106.mail.sc5.yahoo.com ([66.163.169.226]:36520 "HELO smtp106.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S265200AbUGZLNZ (ORCPT ); Mon, 26 Jul 2004 07:13:25 -0400 Message-ID: <4104E750.60400@yahoo.com.au> Date: Mon, 26 Jul 2004 21:13:20 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040707 Debian/1.7-5 X-Accept-Language: en MIME-Version: 1.0 To: Con Kolivas CC: "R. J. Wysocki" , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: Autotune swappiness01 References: <200407261234.29565.rjwysocki@sisk.pl> <4104DD27.6050907@kolivas.org> <200407261254.01186.rjwysocki@sisk.pl> <4104E4ED.7030901@kolivas.org> In-Reply-To: <4104E4ED.7030901@kolivas.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Con Kolivas wrote: > R. J. Wysocki wrote: > >> On Monday 26 of July 2004 12:29, Con Kolivas wrote: >> >>> I think one knob is one knob too many already. >> >> >> >> Can you please tell me why do you think so? > > > If you wanna discuss pedantics... > > In my ideal, nonsensical, impossible to obtain world we have an > autoregulating operating system that doesn't need any knobs. > Some thinks are fundamental tradeoffs that can't be autotuned. Latency vs throughput comes up in a lot of places, eg. timeslices. Maximum throughput via effective use of swap, versus swapping as a last resort may be another.