Re: NetBSD 5.0.1 Networking Message

[Donald Lee <MacPPC2%caution.icompute.com@localhost>]

>On Mon, Aug 17, 2009 at 10:38:59PM -0400, Erik Winkler wrote:
>> I am still getting the "transmit underrun" errors plus the following  
>> as well:
>> 
>> /netbsd: ex1:  transmit underrun (9000) @20, new threshold is 40
>> /netbsd: ex1:  transmit underrun (9000) @40
>> /netbsd: ex1:  transmit underrun (9000) @40
>> /netbsd: ex1:  transmit underrun (9000) @40, new threshold is 60
>
>So the threshold correction code is working.
>
>> 
>> Seems strange since the system has a 1 Ghz CPU and 768 MB of RAM.  I  
>> never had this error with NetBSD 3.0 and it has only just appeared  
>> with NetBSD 4.0 and 5.0.
>
>Maybe because the device was always in store-and-forward mode before
>
>> Any ideas where to look in the kernel code?
>
>sys/dev/ic/elinkxl.c
>
>But these errors are harmless, they're informationnal only.

I know that in the "old days" people used to debug the tape drive
drivers by listening to the tape move.  If it wasn't "smooth", it had bugs.

I would put this in the same category.  The message is informational,
but if it isn't intended behavior, it's worth a look.

YMMV, of course.

-dgl-