Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268553AbUJTQpa (ORCPT ); Wed, 20 Oct 2004 12:45:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268686AbUJTQlh (ORCPT ); Wed, 20 Oct 2004 12:41:37 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:52369 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S268553AbUJTQkh (ORCPT ); Wed, 20 Oct 2004 12:40:37 -0400 Subject: Re: [PATCH 1/3] Separate IRQ-stacks from 4K-stacks option From: Lee Revell To: Arjan van de Ven Cc: Timothy Miller , Andrea Arcangeli , Hugh Dickins , "Martin J. Bligh" , Andrea Arcangeli , Alan Cox , Chris Wedgwood , LKML , Christoph Hellwig In-Reply-To: <20041020153521.GB21556@devserv.devel.redhat.com> References: <593560000.1094826651@[10.10.2.4]> <20040910151538.GA24434@devserv.devel.redhat.com> <20040910152852.GC15643@x30.random> <20040910153421.GD24434@devserv.devel.redhat.com> <41768858.8070709@techsource.com> <20041020153521.GB21556@devserv.devel.redhat.com> Content-Type: text/plain Message-Id: <1098290345.1429.65.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Wed, 20 Oct 2004 12:39:06 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 728 Lines: 20 On Wed, 2004-10-20 at 11:35, Arjan van de Ven wrote: > On Wed, Oct 20, 2004 at 11:46:32AM -0400, Timothy Miller wrote: > > The rules about how long a hard irq would be allowed to run would have > > to be draconian. > > they already are. The IDE I/O completion in hardirq context means that one can run for almost 3ms. Apparently at OLS it was decided that the target for desktop responsiveness was 1ms. So this is a real problem. What exactly do you mean by "draconian"? Lee - 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/