From owner-freebsd-bugs Tue May 18 14:50: 4 1999 Delivered-To: freebsd-bugs@freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21]) by hub.freebsd.org (Postfix) with ESMTP id 1BFFA1550E for ; Tue, 18 May 1999 14:50:01 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.9.3/8.9.2) id OAA59223; Tue, 18 May 1999 14:50:01 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Date: Tue, 18 May 1999 14:50:01 -0700 (PDT) Message-Id: <199905182150.OAA59223@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org Cc: From: David Greenman Subject: Re: kern/11765: performance bug: network devices fxp : de perform Very slowly when both cards are in a single machine Reply-To: David Greenman Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org The following reply was made to PR kern/11765; it has been noted by GNATS. From: David Greenman To: dave@educentre.com Cc: FreeBSD-gnats-submit@FreeBSD.ORG Subject: Re: kern/11765: performance bug: network devices fxp : de perform Very slowly when both cards are in a single machine Date: Tue, 18 May 1999 14:45:51 -0700 >>Description: > >If you have a de network card (Kingston) >and an fxp network card (Intel) in a single >machine then you can't get more than 14K/s >xfer speed down the de network card. > >>How-To-Repeat: > >Machine A is multihomed. >It has an fxp network card (e.g. used to talk to the net) >and a de network card (used to talk to machine B) > >Machine B is singehomed. >It has a de network card used only for talking with machine A. > >FTP GET on machine B from A (or vice versa) goes at max speed of 14K/s >down a short:) length of UTP crossover. >both de cards are talking 10baset/utp half duplex > >>Fix: > >Swapping the fxp card with machine B's de card >(so that each machine contains just one type of card) >restores performance to expected levels. Sounds like an autonegotiation/duplex problem. I suggest forcing both sides to 100/full. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project - http://www.freebsd.org Creator of high-performance Internet servers - http://www.terasolutions.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message