>>> de0: abnormal interrupt: transmit underflow (raising TX threshold to 128|512)
>> [...]
> This happens minutes after the machine is up with only the most minor
> bit of traffic on the wire.  After it has step to "store-and-forward"
> there is no further such changes.  Of course, this might all be
> related to the odd output errors that seem to occure a lot.

I admin an alpha with

de0 at pci0 dev 5 function 0
de0: interrupting at eb164 irq 2
de0: DEC DE500-AA 21140A [10-100Mb/s] pass 2.0
de0: address 00:00:f8:06:29:15
de0: enabling 100baseTX port

and every boot, as soon as any significant network traffic occurs, it
gets such messages, first 96|256, then 128|512, then 160|1024, then
store-and-forward (at which point, of course, it stops).  I have seen
nothing else unusual with de0, so I doubt it has much to do with your
"odd output errors".

					der Mouse

			       mouse@rodents.montreal.qc.ca
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