From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 7 Sep 2001 20:54:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 7 Sep 2001 20:53:56 -0400 Received: from adsl-63-194-239-202.dsl.lsan03.pacbell.net ([63.194.239.202]:17144 "EHLO mmp-linux.matchmail.com") by vger.kernel.org with ESMTP id ; Fri, 7 Sep 2001 20:53:38 -0400 Date: Fri, 7 Sep 2001 17:53:52 -0700 From: Mike Fedyk To: linux-kernel@vger.kernel.org Subject: VM improvement in -ac [was: "Cached" grows and grows and grows...] Message-ID: <20010907175352.U29607@mikef-linux.matchmail.com> Mail-Followup-To: linux-kernel@vger.kernel.org In-Reply-To: <20010907191349.457cad95.skraw@ithnet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.20i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 07, 2001 at 11:15:36PM +0100, Alan Cox wrote: > > To tell you the honest truth: you are not alone in cosmos (with this problem) > > ;-) > > To give you that explicit hint for saving money: do not buy mem, it will be > > eaten up by recent kernels without any performance gain or other positive > > impact whatsoever. > > Pick up a 2.4.9-ac kernel, and you shouldnt be seeing the problem (I say > shouldnt, I'm not 100% convinced its all under control) > I have to agree for the most part. My system used to use a lot of cache, and swapped all of the time with 300+MBs of ram on a Linus 2.4 kernel, now with -ac my swap is under 1kB with the same apps and load. I can even run ext3 now without another patch :). One thing I have noticed is that I still see my system accessing the drive softly for about 30 second time periods a few times a day. I didn't see this on 2.2, and vmstat doesn't show any paging traffic, but it does show about 48 avg pages/sec going out to the disk. I haven't really looked very hard to find the culprit. Has anyone else noticed this? [OT] Hmm, why isn't ext3 in the Linus kernel yet? It seems more mature than reiserfs was when it was included back in 2.4.1...