From mboxrd@z Thu Jan 1 00:00:00 1970 From: Costa Tsaousis Subject: sunhme x86 SMP issues Date: Thu, 27 Dec 2007 11:00:57 +0200 Message-ID: <477369C9.7030405@tsaousis.gr> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from ppp.tsaousis.gr ([195.97.5.206]:61884 "EHLO ppp.tsaousis.gr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751074AbXL0Jdc (ORCPT ); Thu, 27 Dec 2007 04:33:32 -0500 Received: from localhost (localhost [127.0.0.1]) by ppp.tsaousis.gr (Postfix) with ESMTP id 0DFD130709D for ; Thu, 27 Dec 2007 11:01:01 +0200 (EET) Received: from ppp.tsaousis.gr ([127.0.0.1]) by localhost (ppp.tsaousis.gr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id L-vESEp7p2I6 for ; Thu, 27 Dec 2007 11:00:58 +0200 (EET) Received: from [10.10.10.194] (arete.tsaousis.gr [10.10.10.194]) by ppp.tsaousis.gr (Postfix) with ESMTP id 8238130709C for ; Thu, 27 Dec 2007 11:00:58 +0200 (EET) Sender: netdev-owner@vger.kernel.org List-ID: Merry Christams, I would like to report incompatibilities of the sunhme driver with x86 SMP. My configuration: Tyan S2466 motherboard with 2x Athlon MP 2400+ Kernel: 2.6.23-gentoo-r3 lscpi: 00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] System Controller (rev 20) 00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] AGP Bridge 00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ISA (rev 05) 00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-768 [Opus] IDE (rev 04) 00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ACPI (rev 03) 00:08.0 Mass storage controller: Promise Technology, Inc. 20269 (rev 02) 00:09.0 Mass storage controller: Promise Technology, Inc. 20269 (rev 02) 00:10.0 PCI bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] PCI (rev 05) 01:05.0 VGA compatible controller: nVidia Corporation NV36.2 [GeForce FX 5700] (rev a1) 02:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-768 [Opus] USB (rev 07) 02:05.0 PCI bridge: Digital Equipment Corporation DECchip 21153 (rev 04) 02:06.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 08) 02:06.1 Input device controller: Creative Labs SB Live! Game Port (rev 08) 02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10) 02:08.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 78) 03:00.0 Bridge: Sun Microsystems Computer Corp. EBUS (rev 01) 03:00.1 Ethernet controller: Sun Microsystems Computer Corp. Happy Meal 10/100 Ethernet [hme] (rev 01) 03:01.0 Bridge: Sun Microsystems Computer Corp. EBUS (rev 01) 03:01.1 Ethernet controller: Sun Microsystems Computer Corp. Happy Meal 10/100 Ethernet [hme] (rev 01) 03:02.0 Bridge: Sun Microsystems Computer Corp. EBUS (rev 01) 03:02.1 Ethernet controller: Sun Microsystems Computer Corp. Happy Meal 10/100 Ethernet [hme] (rev 01) 03:03.0 Bridge: Sun Microsystems Computer Corp. EBUS (rev 01) 03:03.1 Ethernet controller: Sun Microsystems Computer Corp. Happy Meal 10/100 Ethernet [hme] (rev 01) Sunhme (4 ports) and RTL-8169 (1 port) are configured as an Ethernet bridge. The problem: When transfering large files from one hme port to another, the machine temporarily freezes for a few seconds. Even the ssh sessions, the mouse, and the machine clock are completelly paused. After a few seconds the machine recovers without kernel errors or messages in most cases. These freezes appear continuously as far as the transfer is in place. The problem relaxes a bit with 'noapic' but still happens. The problem does not appear when the kernel is booted with maxcpus=0. With maxcpus=1 the problem is that hme ports become almost unusable (like huge packet loss). The problem does not appear when the machine is routing traffic from a non bridged Ethernet to an hme port. I have tried several different kernel boot options and configurations, without founding any solution. Check this thread: http://forums.gentoo.org/viewtopic-t-635999-start-0-postdays-0-postorder-asc-highlight-.html?sid=275e5b2a0faea0c878b2a27fe7b83523 I am not subscribed to the list, so please CC me in replies. Thanks, Costa