From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 22 Aug 2001 17:26:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 22 Aug 2001 17:26:35 -0400 Received: from c1608841-a.fallon1.nv.home.com ([65.5.95.44]:36248 "EHLO tarot.internal.aom.geek") by vger.kernel.org with ESMTP id ; Wed, 22 Aug 2001 17:26:33 -0400 Date: Wed, 22 Aug 2001 14:26:36 -0700 To: Wakko Warner Cc: Luca Montecchiani , Linux Kernel Subject: Re: [FAQ?] More ram=less performance (maximum cacheable RAM) Message-ID: <20010822142636.B6809@ferret.dyndns.org> In-Reply-To: <3B82B988.50DE308A@iname.com> <200108211957.f7LJvEt20846@vindaloo.ras.ucalgary.ca> <998430817.3139.41.camel@phantasy> <3B8350D3.CDE749E1@iname.com> <20010822071213.A9273@animx.eu.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="JYK4vJDZwFMowpUq" Content-Disposition: inline In-Reply-To: <20010822071213.A9273@animx.eu.org> User-Agent: Mutt/1.3.18i From: idalton@ferret.dyndns.org Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --JYK4vJDZwFMowpUq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 22, 2001 at 07:12:13AM -0400, Wakko Warner wrote: > > >=20 > > > It also has nothing to do with Linux. Some motherboard's TAG RAM do = not > > > allow for caching more than xMB. > >=20 > > I'm just proposing to update the FAQ to help people like me=20 > > that thinking to gain speed doubling the system ram have seen > > a severe performance drop for certain task like compiling the=20 > > kernel . > >=20 > > Answer :=20 > > It has nothing to do with Linux, maybe your motherboard's TAG Ram > > do not allow for caching more than xMB. >=20 > The bios has something to do with that as well. I have a dual pentium > machine at work that was really slow. I looked in the bios and it has an > option to cache 64mb or 512mb. speed up my kernel compiles (2.2.x) by ab= out > 12 minutes. (took 20, after the change, it took about 8) Mine has this option, but kernel OOPSes with the option set to 512MB. It's a TMC TD5TH. I've posted the OOPS before. I can post if anyone wants to see it. --=20 Ferret I will be switching my email addresses from @ferret.dyndns.org to @mail.aom.geek on or after September 1, 2001, but not until after Debian's servers include support. 'geek' is an OpenNIC TLD. See http://www.opennic.unrated.net for details about adding OpenNIC support to your computer, or ask your provider to add support to their name servers. --JYK4vJDZwFMowpUq Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE7hCOMe0DNEkH06HMRAvE/AJ0dks5qCttLAuiouCcEoM1QQldT8QCeN1gi 0tXjhe96WLXDYfmJf+d/Udg= =ONoF -----END PGP SIGNATURE----- --JYK4vJDZwFMowpUq--