From owner-freebsd-hackers Tue Apr 1 18:56:37 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id SAA29591 for hackers-outgoing; Tue, 1 Apr 1997 18:56:37 -0800 (PST) Received: from root.com (implode.root.com [198.145.90.17]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id SAA29583 for ; Tue, 1 Apr 1997 18:56:34 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by root.com (8.8.5/8.6.5) with SMTP id SAA21240; Tue, 1 Apr 1997 18:57:50 -0800 (PST) Message-Id: <199704020257.SAA21240@root.com> X-Authentication-Warning: implode.root.com: localhost [127.0.0.1] didn't use HELO protocol To: Jaye Mathisen cc: hackers@freebsd.org Subject: Re: de driver problems/ CRC errors with 2.2.1-RELEASE In-reply-to: Your message of "Tue, 01 Apr 1997 17:14:09 PST." From: David Greenman Reply-To: dg@root.com Date: Tue, 01 Apr 1997 18:57:50 -0800 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >Digital HX6000, P6200/512, 32MB RAM, onboard Adaptec 7880, UW's, Toshiba >12X CDROM, 1 2GB seagate Barracude (wide), 1 SMC dual port 10/100 card. > >This box is hooked to a 3COM Superstack II Switch 3000, (A 100MB switch). > >Any heavy NFS access (like via iozone on NFS partition) generates >kazillions of CRC align errors, at the rate of 30-40/second. (At least, >according to the 3com switch, and the output of netstat). > >lighter access doesn't seem to do it. > >For example, running bonnie, the putc phase generates oodles of errors, >but the rewrite phase generates maybe 1 or 2 per page of output. > > >Any tips appreciated, I've been happy with the de driver, but this >is not acceptable or usable. > > >BTW, I took a box with a much older 2.2 kernel, from around October or so, >and plugged it in, and zero problems. So it seems like a moderately >recent development. Try forcing half duplex on the switch port. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project