From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 23 Jan 2001 19:09:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 23 Jan 2001 19:09:43 -0500 Received: from penguin.e-mind.com ([195.223.140.120]:10040 "EHLO penguin.e-mind.com") by vger.kernel.org with ESMTP id ; Tue, 23 Jan 2001 19:09:38 -0500 Date: Wed, 24 Jan 2001 01:09:36 +0100 From: Andrea Arcangeli To: Sasi Peter Cc: Godfrey Livingstone , linux-kernel@vger.kernel.org Subject: Re: Ingo's RAID patch for 2.2.18 final? Message-ID: <20010124010936.A1201@athlon.random> In-Reply-To: <3A61315C.37318059@hattaway-associates.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: ; from sape@iq.rulez.org on Wed, Jan 24, 2001 at 12:52:57AM +0100 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 24, 2001 at 12:52:57AM +0100, Sasi Peter wrote: > On Sun, 14 Jan 2001, Godfrey Livingstone wrote: > > > You MUST apply this patch before the two raid patches. The VM patch stablises > > the 2.2.18 virtual memory system and if you don't apply my two repackaged > > patches will fail. The above VM patch has been accepted into 2.2.19pre3 and > > many people are using it so is not untested. > > 2.2.19preXaaX Virtually disabled I/O cache extention-by-swapout, working > on previous (semi)stock kernels (raid+ide patched) :( Can you measure a performance degradation because of that? Previous kernels was certainly not a good example because they was swapping out stuff even with `cp /dev/zero .`. > Thus I wouldn't advise VM global till it gets somewhatbalanced to > non-swapless configs... You said me your machine start to swapout when the filesystem cache reaches 100mbytes (on your 384Mbyte box). That seems sane behaviour on a misc load. We could add some additional bit of page aging to swapout more when it worth indeed, but current balance looks just quite sane. Andrea - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/