From owner-freebsd-hardware Mon Nov 30 15:10:37 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA29595 for freebsd-hardware-outgoing; Mon, 30 Nov 1998 15:10:37 -0800 (PST) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from root.com (root.com [198.145.90.17]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA29587 for ; Mon, 30 Nov 1998 15:10:33 -0800 (PST) (envelope-from root@root.com) Received: from root.com (localhost [127.0.0.1]) by root.com (8.8.8/8.8.5) with ESMTP id PAA21333; Mon, 30 Nov 1998 15:10:32 -0800 (PST) Message-Id: <199811302310.PAA21333@root.com> To: Kyle Mestery cc: Bill Paul , hardware@FreeBSD.ORG Subject: Re: Call for testers for RealTek 8139 driver In-reply-to: Your message of "Mon, 30 Nov 1998 16:41:48 CST." From: David Greenman Reply-To: dg@root.com Date: Mon, 30 Nov 1998 15:10:32 -0800 Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >I am seeing something weird. When transfering large files, I can routinely get >about 1000 KB/s between the two FreeBSD boxes. But, the collision light on my >hub flashes a lot, which surprised me, since the only traffic on the hub was >between the two FreeBSD boxes. So, I did a netstat -i on both boxes, and Don't worry about that. Slight differences in the speed of the NICs on the wire (specifically, their ability to send out back-to-back packets) is the main thing that will affect collisions. The collisions are caused by the output packets colliding with the TCP ACKs and is quite normal and expected with half duplex ethernet. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message