From owner-freebsd-questions Mon Jun 7 15:26:15 1999 Delivered-To: freebsd-questions@freebsd.org Received: from sand5.global.net.uk (sand5.global.net.uk [194.126.80.249]) by hub.freebsd.org (Postfix) with ESMTP id 0381914F60 for ; Mon, 7 Jun 1999 15:25:56 -0700 (PDT) (envelope-from marko@globalnet.co.uk) Received: from p8bs14a06.client.global.net.uk ([195.147.222.140] helo=marder-1.) by sand5.global.net.uk with esmtp (Exim 2.05 #1) id 10r7q4-0003FV-00; Mon, 7 Jun 1999 23:25:53 +0100 Received: (from marko@localhost) by marder-1. (8.9.2/8.8.8) id XAA00747; Mon, 7 Jun 1999 23:23:57 +0100 (BST) (envelope-from marko) Date: Mon, 7 Jun 1999 23:23:57 +0100 From: Mark Ovens To: Doug Jennings Cc: "James R. Shrenk" , freebsd-questions@FreeBSD.ORG Subject: Re: silo overflow errors Message-ID: <19990607232356.E255@marder-1> References: <000c01beb133$a2d3f1c0$27c194d0@compuschmam> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.3i In-Reply-To: <000c01beb133$a2d3f1c0$27c194d0@compuschmam>; from Doug Jennings on Mon, Jun 07, 1999 at 05:17:53PM -0500 Organization: Total lack of Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, Jun 07, 1999 at 05:17:53PM -0500, Doug Jennings wrote: > When I get the output of dmesg, it contains the following lines: > > sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa > sio0: type 16550A > > I knew it had to be a 16550A UART because the computer is brand new with all > the appropriate bells / whistles / et cetera. Argh. I suppose I will see > if I can slow down the modem now. > > One more question...do you think the problem is happening inside the modem > itself? Or could it be caused by some kind of interference in my serial > cable? It would be worth checking the shield on your cable, especially if it runs parallel to the mains lead. I've seen silo overflow errors generated at the rate of >50 per second on a Sun with serial lines to terminals running through a factory close to arc welders :-) > I am obviously grasping here, but I just can't figure out why I am > having silo errors with such a supposedly good modem (external courier > v.everything 28800). > > >What is your dmesg output? It looks like you might have a older UART > >(8250 maybe?) If that's the case, you might try slowing the modem down to > >14400 and see if that doesn't help. > > > > > >On Mon, 7 Jun 1999, Doug Jennings wrote: > > > >> > >> After finally getting user ppp to work, I keep running into the > >> following problem. Once I establish a ppp connection and I try to > >> send/receive any data whatsoever (for example, opening a telnet > session), I > >> get the message: > >> > >> /kernel: sio0: 1 more silo overflow (total 1) > >> > >> The 'total' goes up each time I send/receive any data (for example, if I > >> issue a "ls" command in the telnet session and have to receive the output > of > >> that). It slows down my 28800 modem to an absolute crawl. > >> > >> Any ideas on a fix for this? I am running a fresh installation of FreeBSD > >> 3.1 and I am using an external USR v.everything courier modem. I know > that > >> it has to do with some buffering issue -- I just don't know how to fix > it. > >> > >> Any ideas would be appreciated. > >> > >> Thanks, > >> > >> -Doug > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > -- FreeBSD - The Power To Serve http://www.freebsd.org My Webpage http://www.users.globalnet.co.uk/~markov _______________________________________________________________ Mark Ovens, CNC Apps Engineer, Radan Computational Ltd. Bath UK CAD/CAM solutions for Sheetmetal Working Industry mailto:marko@uk.radan.com http://www.radan.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message