From owner-freebsd-firewire Mon Mar 4 18:14:46 2002 Delivered-To: freebsd-firewire@freebsd.org Received: from www.kozubik.com (www.kozubik.com [198.78.70.162]) by hub.freebsd.org (Postfix) with ESMTP id 927E237B405; Mon, 4 Mar 2002 18:14:38 -0800 (PST) Received: from localhost (john@localhost) by www.kozubik.com (8.11.0/8.11.0) with ESMTP id g251tC593459; Mon, 4 Mar 2002 17:55:12 -0800 (PST) (envelope-from john@kozubik.com) Date: Mon, 4 Mar 2002 17:55:12 -0800 (PST) From: John Kozubik X-Sender: john@www To: James Cc: hackers@FreeBSD.ORG, freebsd-firewire@FreeBSD.ORG Subject: Re: periodic firewire max-out question In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-firewire@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG typo. 63 is the number I intended in both cases. I am basically just inquiring as to the practical problems one might face when actually maxing out the spec, with 63 devices in one adaptor. You are correct - none of those multi-port adaptors actually have two buses. I am not sure if anyone has plans on a multi-bus adaptor. Since posting this question, I have received quite a bit of anecdotal evidence that suggests that actually having 63 devices on the chain at once is _very_ difficult. Most people report running into problems at around 20-30 devices. Power is also an issue, if the devices are bus-powered as opposed to wall-powered. ----- John Kozubik - john@kozubik.com - http://www.kozubik.com On Mon, 4 Mar 2002, James wrote: > > From: John Kozubik > > > > I still do not yet own 63 firewire devices, and so, once again, I am > > wondering if anyone here has ever actually connected 128 devices to a > > Huh? How did you get from 63 devices to 128? > > I don't know of any multi-bus 1394 adapters on the consumer > market. Adapters have multiple ports but all are on the same bus. I'd be > curious to find one that actually has more than one bus. > > -James > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-firewire" in the body of the message