From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 6 May 2002 19:40:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 6 May 2002 19:40:26 -0400 Received: from jalon.able.es ([212.97.163.2]:11472 "EHLO jalon.able.es") by vger.kernel.org with ESMTP id ; Mon, 6 May 2002 19:40:25 -0400 Date: Tue, 7 May 2002 01:27:21 +0200 From: "J.A. Magallon" To: Lista Linux-Kernel Subject: P4 Xeon summary inquiry Message-ID: <20020506232721.GC3019@werewolf.able.es> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: 7BIT X-Mailer: Balsa 1.3.5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, all I am trying to make a dual P4-Xeon box (P4DCE, Intel 869) work optimally. After some search in list archives, I have found this points: - You need ACPI, and boot with acpismp=force, to have hyperthreading (see 4 cpus) - To balance interrupts, a patch from Ingo is needed - To balance timers, one other patch was needed, but this in included in 2.4.19-pre8 (do not know since which pre is there) I tried to boot with acpismp=force, but then performance was dog slow, I could count lines scrolling on a rxvt. I checked mtrr and look like working. Box has 1Gb of ram, so kernel is using CONFIG_HIGHMEM4G=y. Kernel is the standard highmem Mandrake kernel in 8.2 (2.4.18-6mdkenterprise) that is mainly a plain 2.4.18 with some .19-pre1 fixes. Any correction ? Any known problem in 2.4.18 about this issue that has bee corrected in pres for 19 ? Any idea about the performance loss ? TIA -- J.A. Magallon # Let the source be with you... mailto:jamagallon@able.es Mandrake Linux release 8.3 (Cooker) for i586 Linux werewolf 2.4.19-pre8-jam1 #1 SMP dom may 5 23:46:04 CEST 2002 i686