From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S271724AbTG2Oat (ORCPT ); Tue, 29 Jul 2003 10:30:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271808AbTG2Oas (ORCPT ); Tue, 29 Jul 2003 10:30:48 -0400 Received: from c210-49-248-224.thoms1.vic.optusnet.com.au ([210.49.248.224]:7087 "EHLO mail.kolivas.org") by vger.kernel.org with ESMTP id S271724AbTG2Oai (ORCPT ); Tue, 29 Jul 2003 10:30:38 -0400 From: Con Kolivas To: Timothy Miller , Valdis.Kletnieks@vt.edu Subject: Re: [PATCH] O10int for interactivity Date: Wed, 30 Jul 2003 00:35:01 +1000 User-Agent: KMail/1.5.2 Cc: linux kernel mailing list , Andrew Morton References: <200307280112.16043.kernel@kolivas.org> <200307281808.h6SI8C5k004439@turing-police.cc.vt.edu> <3F2682EF.2040702@techsource.com> In-Reply-To: <3F2682EF.2040702@techsource.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200307300035.01354.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 30 Jul 2003 00:21, Timothy Miller wrote: > Valdis.Kletnieks@vt.edu wrote: > > I'm guessing that the anticipatory scheduler is the culprit here. Soon > > as I figure out the incantations to use the deadline scheduler, I'll > > report back.... > > It would be unfortunate if AS and the interactivity scheduler were to > conflict. Is there a way we can have them talk to each other and have > AS boost some I/O requests for tasks which are marked as interactive? > > It would sacrifice some throughput for the sake of interactivity, which > is what the interactivity patches do anyhow. This is a reasonable > compromise. That's not as silly as it sounds. In fact it should be dead easy to increase/decrease the amount of anticipatory time based on the bonus from looking at the code. I dunno how the higher filesystem gods feel about this though. Con