From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 25 Sep 2001 18:55:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 25 Sep 2001 18:55:18 -0400 Received: from hermes.csd.unb.ca ([131.202.3.20]:15581 "EHLO hermes.csd.unb.ca") by vger.kernel.org with ESMTP id ; Tue, 25 Sep 2001 18:55:03 -0400 X-WebMail-UserID: newton Date: Tue, 25 Sep 2001 20:04:54 -0300 From: Chris Newton To: linux-kernel X-EXP32-SerialNo: 00003025, 00003442 Subject: FWD: RE: excessive interrupts on network cards Message-ID: <3BB13732@webmail1> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: WebMail (Hydra) SMTP v3.61.08 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Francois Romieu got me to run 'lspci -x', and came to the conclusion that the net card and scsi card are sharing IRQs... Someone just told me tha the had had a sound card and a network card sharing IRQs, and that caused the network card to generate 'oodles of interrupts for no apparent reason'. This on the right track? Thanks Chris >===== Original Message From Francois Romieu ===== Chris Newton : [...] > 00:02.0 Ethernet controller: Intel Corporation 82557 [Ethernet Pro 100] (rev > 08) > 00: 86 80 29 12 17 01 90 02 08 00 00 02 08 20 00 00 > 10: 00 20 10 fe c1 ec 00 00 00 00 00 fe 00 00 00 00 > 20: 00 00 00 00 00 00 00 00 00 00 00 00 28 10 9b 00 > 30: 00 00 00 fd dc 00 00 00 00 00 00 00 0b 01 08 38 ^ [...] > 01:02.0 SCSI storage controller: Adaptec 7899P (rev 01) > 00: 05 90 cf 00 16 01 b0 02 01 00 00 01 08 20 80 80 > 10: 01 dc 00 00 04 10 00 f9 00 00 00 00 00 00 00 00 > 20: 00 00 00 00 00 00 00 00 00 00 00 00 28 10 ce 00 > 30: 00 00 00 f8 dc 00 00 00 00 00 00 00 05 01 28 19 ^ [...] > 01:02.1 SCSI storage controller: Adaptec 7899P (rev 01) > 00: 05 90 cf 00 16 01 b0 02 01 00 00 01 08 20 80 80 > 10: 01 d8 00 00 04 00 00 f9 00 00 00 00 00 00 00 00 > 20: 00 00 00 00 00 00 00 00 00 00 00 00 28 10 ce 00 > 30: 00 00 00 f8 dc 00 00 00 00 00 00 00 0b 02 28 19 ^ [...] > 01:06.0 Ethernet controller: 3Com Corporation 3c980-TX 10/100baseTX NIC > [Python-T] (rev 78) > 00: b7 10 05 98 17 01 10 02 78 00 00 02 08 20 00 00 > 10: 81 d4 00 00 00 24 00 f9 00 00 00 00 00 00 00 00 > 20: 00 00 00 00 00 00 00 00 00 00 00 00 b7 10 00 10 > 30: 00 00 00 f8 dc 00 00 00 00 00 00 00 05 01 0a 0a ^ [...] > 01:08.0 Ethernet controller: 3Com Corporation 3c980-TX 10/100baseTX NIC > [Python-T] (rev 78) > 00: b7 10 05 98 17 01 10 02 78 00 00 02 08 20 00 00 > 10: 01 d4 00 00 00 20 00 f9 00 00 00 00 00 00 00 00 > 20: 00 00 00 00 00 00 00 00 00 00 00 00 b7 10 00 10 > 30: 00 00 00 f8 dc 00 00 00 00 00 00 00 0b 01 0a 0a ^ Each of your ethernet adapter shares an irq with a scsi controller. I had some results pulling some cards from the PCI slots and moving the network adapter around until its irq differs but I won't claim it's the cure for your problem (it was on HP Netserver motherboards). -- Ueimor