From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: e1000 driver problem with Intel Pro/1000 MT adapter Date: Sun, 05 Dec 2004 00:37:19 -0800 Message-ID: <41B2C8BF.9050204@candelatech.com> References: <200412032325.iB3NPdG04693@xos037.xos.nl> <1102204801.3343.68.camel@sfeldma-mobl.dsl-verizon.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: Jos Vos , netdev@oss.sgi.com Return-path: To: sfeldma@pobox.com In-Reply-To: <1102204801.3343.68.camel@sfeldma-mobl.dsl-verizon.net> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Scott Feldman wrote: > On Fri, 2004-12-03 at 15:25, Jos Vos wrote: > >>I have a problem with an Intel Pro/1000 MT 4-port card in a Supermicro >>(non-HT) Pentium 4 system using RHEL3 (2.4.21 kernel "the RH way") with >>the e1000 driver (I tried both the version supplied by RH and the >>newest 5.5.4 driver): > > > The 4-port card has two 82546 dual-port controllers behind a PCI-X > bridge. Your symptoms suggest interrupt routing didn't get setup > correctly for the controllers behind the bridge. I've seen more than > one case where the BIOS gets this wrong. The fix is to upgrade to the > latest BIOS. Hopefully this is the fix for you. :-) For what it's worth, I've had good luck with a 4-port pro/1000 NIC in a SuperMicro X5-DPAGG (dual xeon, PCI-X) motherboard. I've tried it with kernel 2.4.27 and 2.6.9 so far... For maximum performance, I needed to increase the tx and rx descriptors to 2k, I believe this helps mitigate the extra latency caused by the PCI-X bridge on the NIC... Ben > > -scott > -- Ben Greear Candela Technologies Inc http://www.candelatech.com