From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750932AbWDDXUK (ORCPT ); Tue, 4 Apr 2006 19:20:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750933AbWDDXUK (ORCPT ); Tue, 4 Apr 2006 19:20:10 -0400 Received: from omta05ps.mx.bigpond.com ([144.140.83.195]:6213 "EHLO omta05ps.mx.bigpond.com") by vger.kernel.org with ESMTP id S1750934AbWDDXUI (ORCPT ); Tue, 4 Apr 2006 19:20:08 -0400 Message-ID: <4432FF26.6050207@bigpond.net.au> Date: Wed, 05 Apr 2006 09:20:06 +1000 From: Peter Williams User-Agent: Thunderbird 1.5 (X11/20060313) MIME-Version: 1.0 To: Al Boldi CC: linux-kernel@vger.kernel.org, Jake Moilanen Subject: Re: [ANNOUNCE][RFC] PlugSched-6.3.1 for 2.6.16-rc5 References: <200604031459.51542.a1426z@gawab.com> <4431AF69.1000708@bigpond.net.au> <200604041627.14871.a1426z@gawab.com> In-Reply-To: <200604041627.14871.a1426z@gawab.com> Content-Type: text/plain; charset=windows-1256; format=flowed Content-Transfer-Encoding: 7bit X-Authentication-Info: Submitted using SMTP AUTH PLAIN at omta05ps.mx.bigpond.com from [147.10.133.38] using ID pwil3058@bigpond.net.au at Tue, 4 Apr 2006 23:20:07 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Al Boldi wrote: > Peter Williams wrote: >> Al Boldi wrote: >>> The default values for spa make it really easy to lock up the system. >>> Is there a module to autotune these values according to cpu/mem/ctxt >>> performance? >> Jake Moilanen had a genetic algorithm autotuner for Zaphod at one time >> which I believe he ported over to PlugSched > > Would this be a load-adaptive dynamic tuner? Yes. > > What I meant was a lock-preventive static tuner. Something that would take > hw-latencies into account at boot and set values for non-locking console > operation. I'm not sure what you mean here. Can you elaborate? > >> I could generate a patch to gather the statistic again and make them >> available via /proc if you would like to try a user space version of >> Jake's work (his was in kernel). > > That would be great! OK, I'll put it on my "to do" list. Peter -- Peter Williams pwil3058@bigpond.net.au "Learning, n. The kind of ignorance distinguishing the studious." -- Ambrose Bierce