Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264418AbUADHXT (ORCPT ); Sun, 4 Jan 2004 02:23:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264419AbUADHXT (ORCPT ); Sun, 4 Jan 2004 02:23:19 -0500 Received: from mta7.pltn13.pbi.net ([64.164.98.8]:64689 "EHLO mta7.pltn13.pbi.net") by vger.kernel.org with ESMTP id S264418AbUADHXR (ORCPT ); Sun, 4 Jan 2004 02:23:17 -0500 Date: Sat, 3 Jan 2004 23:23:12 -0800 From: Mike Fedyk To: Alex Buell Cc: linux-kernel@vger.kernel.org Subject: Re: inode_cache / dentry_cache not being reclaimed aggressively enough on low-memory PCs Message-ID: <20040104072312.GM1882@matchmail.com> Mail-Followup-To: Alex Buell , linux-kernel@vger.kernel.org References: <20040103103023.77bf91b5.jlash@speakeasy.net> <20040103145557.369a12c4.akpm@osdl.org> <20040103190543.3b2d917f.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040103190543.3b2d917f.akpm@osdl.org> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1395 Lines: 32 On Sat, Jan 03, 2004 at 07:05:43PM -0800, Andrew Morton wrote: > Alex Buell wrote: > > > > On Sat, 3 Jan 2004, Andrew Morton wrote: > > > > > John Lash wrote: > > > > > > > > As it stands, it will maintain as many unused entries as there are used entries. > > > > If this low memory system las a large, stable, number of inuse dentry objects, > > > > the unused entries will match it thereby holding double the memory and possibly > > > > causing the problem you see. > > > > > > Yup. There is a fix in 2.6.1-rc1 for this. > > > > Which change would that be? It would be nice to back-port that to 2.4.x if > > that's possible? > > It is not backportable. > > You could try increasing `count' in shrink_dcache_memory() and > shrink_icache_memory(). Also you should be using 2.4.23 or later because > it does have improvements in the memory reclaim area. Also, if there are any improvements considered for the 2.4 VM, it should be on top of the -aa series. That's where the latest updates are, and it doesn't make sence to work from a base that already has seperate improvements available. - 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/