Date: Thu, 15 Feb 2001 09:39:13 -0800 From: "Ted Mittelstaedt" <tedm@toybox.placo.com> To: "Josh Paetzel" <jpaetzel@hutchtel.net>, <freebsd-questions@FreeBSD.ORG>, "Lowell Gilbert" <lowell@world.std.com> Subject: RE: tx underrun Re: (none) Message-ID: <00bf01c09776$35cf7f60$1401a8c0@tedm.placo.com> In-Reply-To: <00c801c096f8$722ecf20$6100000a@vladsempire.net>
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And I've never seen a tx underrun on even a slow 386/33DX system. Perhaps you might look at hardware, like bus speed settings, etc. Ted Mittelstaedt tedm@toybox.placo.com Author of: The FreeBSD Corporate Networker's Guide Book website: http://www.freebsd-corp-net-guide.com > -----Original Message----- > From: owner-freebsd-questions@FreeBSD.ORG > [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Josh Paetzel > Sent: Wednesday, February 14, 2001 6:38 PM > To: freebsd-questions@FreeBSD.ORG; Lowell Gilbert > Subject: Re: tx underrun Re: (none) > > > > ----- Original Message ----- > From: "Lowell Gilbert" <lowell@world.std.com> > To: <freebsd-questions@FreeBSD.ORG> > Sent: Wednesday, February 14, 2001 10:50 AM > Subject: tx underrun Re: (none) > > > > Cy.Schubert@uumail.gov.bc.ca (Cy Schubert - ITSD Open Systems Group) > writes: > > > > > I came into work this morning and notice the following in my > xconsole: > > > > > > xl0: transmission error: 90 > > > xl0: tx underrun, increasing tx start threshold to 120 bytes > > > > > > What would cause a tx underrun? The only cause of any large > amount of > > > traffic from my desktop system was a Veritas backup. > > > > A tx underrun is caused by the computer not keeping up with the NIC > > rather than the other way around, so it's basically a question of > what > > was keeping the computer from servicing the buffer-empty interrupts. > > Any other interrupt that took too long being serviced could do that, > > so it's hard to say what caused it in this case. > > > > A tx underrun is not in itself a problem, however. The messages are > > important because they may help sometimes in tracking down other > > problems, but a single underrun, which doesn't repeat with a larger > > transmit buffer, is nothing to be concerned over. It's virtually > > unavoidable on slower PCs, depending on the type of NIC. > > > > > > Really? I get them on LNE100TX's all the time. I have a p3-700 256 > megs ram that has load avererages of 0.00 0.00 0.00 that will spit out > tx under-runs if I try to ftp something off it. > > Josh > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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