Date: Tue, 01 Jun 1999 11:46:22 -0400 From: Dennis <dennis@etinc.com> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: hackers@freebsd.org Subject: Re: xl driver for 3Com Message-ID: <199906011650.MAA24039@etinc.com> In-Reply-To: <199906011500.IAA27210@lestat.nas.nasa.gov>
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At 08:00 AM 6/1/99 -0700, you wrote: >On Tue, 1 Jun 1999 10:09:59 +0200 > Alexander Maret <maret@axis.de> wrote: > > > At first I tried my FreeBSD machine and I got about 800-900 collisions. > > Second I booted on the same machine linux and I only got 4 (!) collisions. > >It's also possible that Linux isn't counting the collisions properly. > > > I have no problem with thousands or millions of collissions, as long as > > they don't crash my computer. I just want a running system. > >Collisions don't cause your system to crash. If this is happening, >something else is at fault (though that something else may be an >unrelated problem in the Ethernet driver). If your nic driver chains packets (such that there is no time in between) you will see good throughput from the box but your overall network performance will suffer. A PCI card with continueous traffic can completely hog your lan (particularly at 10Mb/s)...which can cause a lot more collisions on your network as other devices will not have access until the hog is finished sending. For "Fairness" gaps in between frames are better as you approach capacity of your wire. Dennis To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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