From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262006AbUGIAkO (ORCPT ); Thu, 8 Jul 2004 20:40:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262062AbUGIAkO (ORCPT ); Thu, 8 Jul 2004 20:40:14 -0400 Received: from mail012.syd.optusnet.com.au ([211.29.132.66]:51941 "EHLO mail012.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S262006AbUGIAkG (ORCPT ); Thu, 8 Jul 2004 20:40:06 -0400 Message-ID: <40EDE956.80705@kolivas.org> Date: Fri, 09 Jul 2004 10:39:50 +1000 From: Con Kolivas User-Agent: Mozilla Thunderbird 0.7.1 (X11/20040626) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andrew Morton Cc: ck@vds.kolivas.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Autotune swappiness References: <40EC13C5.2000101@kolivas.org> <40EC1930.7010805@comcast.net> <40EC1B0A.8090802@kolivas.org> <20040707213822.2682790b.akpm@osdl.org> <20040708001027.7fed0bc4.akpm@osdl.org> <20040708010842.2064a706.akpm@osdl.org> <40ED7534.4010409@kolivas.org> <20040708094406.2b0293ea.akpm@osdl.org> In-Reply-To: <20040708094406.2b0293ea.akpm@osdl.org> X-Enigmail-Version: 0.84.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigCD83EF73F5047581B5D24776" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigCD83EF73F5047581B5D24776 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Andrew Morton wrote: > Con Kolivas wrote: > >>Here is another try at providing feedback to tune the vm_swappiness. > > > I spent some time yesterday trying to demonstrate performance improvements > from those two patches. Using > > make -j4 vmlinux with mem=64m > > and > > qsbench -p 4 -m 96 with mem=256m > > and was not able to do so, which is what I expected. > > We do need more quantitative testing on this work. Sure thing. I need to point out a few things: The point of this patch was to improve the swap behaviour on desktop like loads. The fact that it improved the "when swap is thrashing" scenario (in my testing) was an unintentional bonus. I dont think your load of j4 will induce quite the same swap thrash as what I was testing. I actually suspect the faster cpu & more jobs over fixed memory shows it more. I need someone with more varied hardware to test it for me. I can recreate equivalent results on my current machine which has similar hardware, but I think results showing improvement on different machines and different loads is what you're looking for... and since I'm currently quite low on hardware I can only offer results from this one (and my wife is hating it being offline o_0) Anyone willing to offer to do some tests? Con --------------enigCD83EF73F5047581B5D24776 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFA7elZZUg7+tp6mRURAlIyAJ0TkZtxQh7upF4azvbNLvwQ6iOUbgCdFCM8 OnxyqkYUebMVWHGYJehwPdc= =VrTn -----END PGP SIGNATURE----- --------------enigCD83EF73F5047581B5D24776--