From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261405AbULTEOX (ORCPT ); Sun, 19 Dec 2004 23:14:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261409AbULTEOX (ORCPT ); Sun, 19 Dec 2004 23:14:23 -0500 Received: from mail09.syd.optusnet.com.au ([211.29.132.190]:46225 "EHLO mail09.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S261405AbULTEOS (ORCPT ); Sun, 19 Dec 2004 23:14:18 -0500 Message-ID: <41C65169.4020508@kolivas.org> Date: Mon, 20 Dec 2004 15:13:29 +1100 From: Con Kolivas User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rik van Riel Cc: Mikhail Ramendik , Andrew Morton , Nick Piggin , lista4@comhem.se, linux-kernel@vger.kernel.org Subject: Re: 2.6.10-rc3: kswapd eats CPU on start of memory-eating task References: <14514245.1103496059334.JavaMail.tomcat@pne-ps4-sn2> <41C6073B.6030204@yahoo.com.au> <20041219155722.01b1bec0.akpm@digeo.com> <200412200303.35807.mr@ramendik.ru> <41C640DE.7050002@kolivas.org> In-Reply-To: X-Enigmail-Version: 0.89.5.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig4DA86FAE9C2F70BF1198AA47" 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) --------------enig4DA86FAE9C2F70BF1198AA47 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Rik van Riel wrote: > On Mon, 20 Dec 2004, Con Kolivas wrote: > >> I still suspect the thrash token patch even with the swap token >> timeout at 0. Is it completely disabled at 0 or does it still do >> something? > > > It makes it harder to page out pages from the task holding the > token. I wonder if kswapd should try to steal the token away > from the task holding it, so in effect nobody holds the token > when the system isn't under a heavy swapping load. > What if the token isn't handed out at all until a heavy swapping load starts? A slight delay in thrash control would be worth it. Con --------------enig4DA86FAE9C2F70BF1198AA47 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBxlFrZUg7+tp6mRURAilgAJ9shmc1cNi9t13kKKJ08LEgxV851ACeOBkp pjUvjGPppvUUKVL+AF0wSeQ= =5Dyb -----END PGP SIGNATURE----- --------------enig4DA86FAE9C2F70BF1198AA47--