From owner-freebsd-hardware Sun Nov 7 22:50:10 1999 Delivered-To: freebsd-hardware@freebsd.org Received: from sasami.jurai.net (sasami.jurai.net [63.67.141.99]) by hub.freebsd.org (Postfix) with ESMTP id 9396B14BF5; Sun, 7 Nov 1999 22:50:07 -0800 (PST) (envelope-from winter@jurai.net) Received: from localhost (winter@localhost) by sasami.jurai.net (8.8.8/8.8.7) with ESMTP id BAA22077; Mon, 8 Nov 1999 01:50:06 -0500 (EST) Date: Mon, 8 Nov 1999 01:50:06 -0500 (EST) From: "Matthew N. Dodd" To: Daniel Malament Cc: questions@FreeBSD.ORG, hardware@FreeBSD.ORG Subject: Re: various In-Reply-To: <199911071032.FAA13170@j51.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Sun, 7 Nov 1999, Daniel Malament wrote: > I have a number of questions I've been building up... > > 1) I have a 2.2.8 box on which I've tried two nics: a generic > NE2000-compatible PCI (ed1) and a 3com 3c509 ISA (ep0). For comparison, I > transferred 600M of files to another machine on the network (the only > other one up right now, in fact). It took half an hour with the PCI. > (Average of 333 KB/s.) With the 3Com, I didn't let it finish because it > was giving me transfer rates of 30K/sec!!! Anybody know why I'm getting > such slow performance out of the 3com? Are all ISA nics this slow? For > that matter, how much bandwidth can one expect a card to use in general? > What prevents getting the full 10MB? Buffer delays? Sounds like an interrupt problem. Verify that all interrupts on the box are accounted for and non-conflicting. -- | Matthew N. Dodd | '78 Datsun 280Z | '75 Volvo 164E | FreeBSD/NetBSD | | winter@jurai.net | 2 x '84 Volvo 245DL | ix86,sparc,pmax | | http://www.jurai.net/~winter | This Space For Rent | ISO8802.5 4ever | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message