Network often not responding

Stanislaw Halik sthalik at tehran.lain.pl
Wed Aug 9 17:19:44 UTC 2006


On Wed, Aug 09, 2006, Dominic Marks wrote:
>> Aug  9 15:09:16 cache kernel: xl0: transmission error: 90
>> Aug  9 15:09:16 cache kernel: xl0: tx underrun, increasing tx start 
>> threshold to 120 bytes

> dc%d: TX underrun -- increasing TX threshold  The device generated a
> transmit underrun error while attempting to DMA and transmit a packet.
> This happens if the host is not able to DMA the packet data into the
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> NIC's FIFO fast enough.  The driver will dynamically increase the
  ~~~~~~~~~~~~~~~~~~~~~~
> trans- mit start threshold so that more data must be DMAed into the
> FIFO before the NIC will start transmitting it onto the wire."

> So it would seem like the card cannot keep pace with the system. What NICs
                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> have you tried?

Basing on the quoted text, isn't it the opposite?

-- 
I saw `cout' being shifted "Hello world" times to the left and stopped right
there. -- Steve Gonedes
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