Thanks for all the answers:
This message is nothing to worry about. It just shows that the
system has adapted to the change in network speed. So I will ignore
it in future.
An example of the answers I got ...
John Becker wrote:
> HI:
>
> It means that the ethernet controller tu0 was sending characters
> faster than the PCI bus could fill the transmit FIFO. So the
> controller raised the threshold for how much data
> gets put in the FIFO before it starts transmitting.i.e.,
> the controller is dynamically adjusting itself ot optimize
> network throughput.
Peter
Original Question:
> Hi,
>
> After last weeks dicussion on half/full duplex I found out that the
> network card is only running on 10 Mb/s. So I have set the ewa0_mode
> to fast now. The result is that I get the following message when
> booting:
>
> Mar 13 09:48:27 max vmunix: tu0: transmit FIFO underflow: threshold
> raised to: 256 bytes
> Mar 13 09:48:27 max vmunix: tu0: transmit FIFO underflow: threshold
> raised to: 512 bytes
> Mar 13 09:48:27 max vmunix: tu0: transmit FIFO underflow: threshold
> raised to: 1024 bytes
>
> But the network seems to work.
>
> What does this message mean, and what can I do to avoid it?
>
> Thanks a lot in advance,
>
> Peter
Received on Tue Mar 14 2000 - 13:07:12 NZDT