From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 29 Mar 2003 11:53:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 29 Mar 2003 11:53:51 -0500 Received: from anchor-post-39.mail.demon.net ([194.217.242.80]:11243 "EHLO anchor-post-39.mail.demon.net") by vger.kernel.org with ESMTP id ; Sat, 29 Mar 2003 11:53:50 -0500 Date: Sat, 29 Mar 2003 17:04:57 +0000 From: Craig Robinson X-Mailer: The Bat! (v1.61) Business Reply-To: Craig Robinson Organization: BT X-Priority: 3 (Normal) Message-ID: <153495685337.20030329170457@btinternet.com> To: linux-kernel-owner@vger.kernel.org, Alan Cox CC: Linux Kernel Mailing List Subject: Re[2]: 845GE Chipset severe performance problems In-Reply-To: <1048949147.6725.3.camel@dhcp22.swansea.linux.org.uk> References: <188481168784.20030329130300@btinternet.com> <1048949147.6725.3.camel@dhcp22.swansea.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello Alan, Many thanks for the reply.. cat /proc/mtrr shows things, but not sure what it SHOULD be...(output below) Running 2.5.66 now seems to have speeded up things considerably, however, I still consider this slow for a 2.4Ghz machine (we have some 2Ghz under alot of load that will still compile things quicker..) So any suggestions and of course the help you have already provided are appreciated. Craig -- [/usr/src]# cat /proc/mtrr reg00: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1 reg01: base=0x10000000 ( 256MB), size= 128MB: write-back, count=1 reg02: base=0x18000000 ( 384MB), size= 64MB: write-back, count=1 reg03: base=0x1c000000 ( 448MB), size= 32MB: write-back, count=1 reg04: base=0x1e000000 ( 480MB), size= 16MB: write-back, count=1 reg05: base=0x1f000000 ( 496MB), size= 8MB: write-back, count=1 reg06: base=0xe0000000 (3584MB), size= 64MB: write-combining, count=1 - Saturday, March 29, 2003, 2:45:48 PM, you wrote: AC> Check the mtrr ranges. The odd junk bios gets this wrong and leaves AC> you with parts of main memory uncached. The symptoms you see might AC> be from that if they are all identical boxes. AC> Alan -- Best regards, Craig mailto:craig.robinson@btinternet.com