From owner-freebsd-questions  Mon Nov 29  5:51:55 1999
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Date: Mon, 29 Nov 1999 08:51:50 -0500 (EST)
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From: Lowell Gilbert <lowell@world.std.com>
To: courtney@whtz.com
Cc: questions@freebsd.org
In-reply-to: <85256837.008013C1.00@mail.whtz.com> (courtney@whtz.com)
Subject: Re: TX Overun error
References:  <85256837.008013C1.00@mail.whtz.com>
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   From: courtney@whtz.com
   Date: Sun, 28 Nov 1999 18:18:55 -0500

   This is the error I am getting:

   Nov 28 18:15:52 bsd /kernel: xl0: transmission error: 90
   Nov 28 18:15:52 bsd /kernel: xl0: tx underrun, increasing tx start
   threshold to 120 bytes
   Nov 28 18:15:52 bsd /kernel: xl0: tx underrun, increasing
   tx start threshold to 120 bytes
   Nov 28 18:15:52 bsd /kernel: xl0: transmission error: 90
   Nov 28 18:15:52 bsd /kernel: xl0: transmission error: 90
   Nov 28 18:15:52 bsd /kernel: xl0: tx underrun, increasing tx start
   threshold to 180 bytes
   Nov 28 18:15:52 bsd /kernel: xl0: tx underrun, increasing tx start
   threshold to 180 bytes

   Does anyone have any ideas on why I am getting these, and if they are
   normal...

You're getting them because the ethernet controller is reporting back
an error, specifically an underrun in the transmit buffer, and that
it's increasing the preload buffer size to compensate.  This isn't
usually a problem, although getting this many of the error this
quickly isn't really something I'm used to.  As long as these messages
become less common over time, it's no problem at all.

Be well.


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