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Date:      Wed, 21 Nov 2001 23:06:55 +0000
From:      Scott Mitchell <scott.mitchell@mail.com>
To:        Anthony Atkielski <anthony@freebie.atkielski.com>
Cc:        FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject:   Re: Error on xl0
Message-ID:  <20011121230655.B307@localhost>
In-Reply-To: <010b01c172d6$186032d0$0a00000a@atkielski.com>; from anthony@freebie.atkielski.com on Wed, Nov 21, 2001 at 10:47:18PM %2B0100
References:  <010b01c172d6$186032d0$0a00000a@atkielski.com>

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On Wed, Nov 21, 2001 at 10:47:18PM +0100, Anthony Atkielski wrote:
> What does this error message mean on the console:
> 
> xl0: transmission error: 90
> xl0: tx underrun, increasing tx start threshold to 120 bytes

At a guess, it means your Ethernet card ran out of data to send partway
through a packet.  I imagine it starts transmitting as soon as it has x
bytes of a packet rather than waiting for the whole thing, and for some
reason the rest of these packets wasn't delivered to it in time.  The
driver apparently increased the value of x in an attempt to prevent this
from happening again.

> It occured three times in a row while I was doing make install for fvwm2.

A lack of bandwidth somewhere in your system could cause this kind of
thing... were you generating a lot of network traffic and hammering your
disk(s) at the same time with the fvwm compile?  Was the machine otherwise
busy somehow?

I believe from previous exchanges that you're running a board with a VIA
686 southbridge -- these *are* known to have issues with data corruption
and sensitivity wrt what's plugged in where on the PCI bus.
http://www.viahardware.com/ has the best FAQ on the subject that I've
found.  There may be other equally plausible explanations, but I don't
think we have sufficient information to make a definitive judgement.

HTH,

	Scott

-- 
===========================================================================
Scott Mitchell          | PGP Key ID | "Eagles may soar, but weasels
Cambridge, England      | 0x54B171B9 |  don't get sucked into jet engines"
scott.mitchell@mail.com | 0xAA775B8B |      -- Anon

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