From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Artem S. Tashkinov" Subject: 100% CPU load on nforce2/3 motherboards with kernels >= 2.6.8 Date: Mon, 10 Jan 2005 18:20:21 +0500 Message-ID: <41E28115.4010002@permonline.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.raid.ru ([212.33.224.148]:26378 "EHLO smtp.raid.ru") by vger.kernel.org with ESMTP id S262232AbVAJNUS (ORCPT ); Mon, 10 Jan 2005 08:20:18 -0500 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: B.Zolnierkiewicz@elka.pw.edu.pl Good day, Bartlomiej Zolnierkiewicz! I've got a severe problem with linux >= 2.6.9 kernels on my PC: any read/write HDD IO operations consume 100% of CPU. Kernel is compiled with nforce IDE support. Kernel is vanilla from kernel.org. No proprietary drivers are installed. My chipset is NForce3 250, CPU is Sempron 3100. My MB is GigaByte K8NS Pro. My friend (who has an nforce2 based motherboard Asus A7N8X-X) has the same problem with >= 2.6.9 kernels. 2.6.7 at the same time works fine for him. His and mine kernels say that the HDD is in UDMA5 mode. I tried switching off ACPI/IO APIC and even Plug'n'Play code with no success. Kernel 2.4.28 works perfectly With respect, Artem