From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933974AbXCTEXW (ORCPT ); Tue, 20 Mar 2007 00:23:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933978AbXCTEXW (ORCPT ); Tue, 20 Mar 2007 00:23:22 -0400 Received: from terminus.zytor.com ([192.83.249.54]:38526 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933974AbXCTEXV (ORCPT ); Tue, 20 Mar 2007 00:23:21 -0400 Message-ID: <45FF6189.9080508@zytor.com> Date: Mon, 19 Mar 2007 21:22:33 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 1.5.0.10 (X11/20070301) MIME-Version: 1.0 To: Randy Dunlap CC: Andrew Morton , "J.H." , kernel list Subject: Re: [PATCH] sysctl: vfs_cache_divisor References: <20061214223718.GA3816@elf.ucw.cz> <20061216094421.416a271e.randy.dunlap@oracle.com> <20061216095702.3e6f1d1f.akpm@osdl.org> <458434B0.4090506@oracle.com> <1166297434.26330.34.camel@localhost.localdomain> <20061219063413.GI24090@1wt.eu> <1166511171.26330.120.camel@localhost.localdomain> <20070106103331.48150aed.randy.dunlap@oracle.com> <459FF60D.7080901@zytor.com> <1168112266.2821.2.camel@entropy> <20070106121301.d07de0c9.akpm@osdl.org> <45A0041F.4060903@zytor.com> <20070319122740.286f602e.randy.dunlap@oracle.com> <20070319133613.9f4881db.akpm@linux-foundation.org> <45FEF5BC.90809@oracle.com> In-Reply-To: <45FEF5BC.90809@oracle.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Randy Dunlap wrote: >> >> The we duplicate all the relevant /proc knobs: >> >> cat /proc/sys/vm/dirty_ratio >> 30 >> cat /proc/sys/vm/hires-dirty_ratio/ >> 300000 >> >> Or we do something else ;) > > Sounds better. I wasn't very keen on the userspace interface that this > exposed. Will look at those. > Okay... may be I could throw a spanner in the machinery, and suggest another option: perhaps we should add a way to do sysctl which can handle fractional (fixed-point) values... more coherent/detailed message tomorrow. -hpa