From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267367AbUIJMGW (ORCPT ); Fri, 10 Sep 2004 08:06:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267365AbUIJMGW (ORCPT ); Fri, 10 Sep 2004 08:06:22 -0400 Received: from rproxy.gmail.com ([64.233.170.195]:54288 "EHLO mproxy.gmail.com") by vger.kernel.org with ESMTP id S267367AbUIJMEv (ORCPT ); Fri, 10 Sep 2004 08:04:51 -0400 Message-ID: <328eb89b04091005041dabdef2@mail.gmail.com> Date: Fri, 10 Sep 2004 14:04:51 +0200 From: Wojtek Reply-To: Wojtek To: linux-kernel@vger.kernel.org Subject: performace problem, D state 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, I seem to suffer from the same problem as described by Petr in this post: http://lkml.org/lkml/2004/8/10/126 Performance of my machine gets really ugly when doing I/O. Untaring stuff or copying files brings the machine down, responsiveness is really poor and load average sometimes goes as high as ten (CPU usage is very low then, but I got usually near 100% value in wa column in top). This is K8T Neo MSI motherboard with VIA chipset, Athlon64 CPU (one, it's not SMP mobo). I'm using only IDE controller (SATA disabled). lspci shows this IDE hardware: 0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800 South] (prog-if 00 [Normal decode]) 0000:00:0f.0 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP]) Already tried playing with apic/acpi different kernel boot-parameters, they don't help much. I've also been told that changing elevator to 'deadline' doesn't affect this behaviour. I have seen also other people (IRC/linux forums) having this issue with MSI motherboards with VIA IDE chipset and amd64 architecture. I'd appreciate any hints which could help us to locate the cause of this behaviour. -- wr.