Re: via-rhine problem on EPIAV-1Ghz 2.4.21-pre6

[Roger Luethi]

On Wed, 02 Apr 2003 12:10:00 +0800, Brad Campbell wrote:
> It solved the timeout propblems, I do get these however.
> 
> Not that they cause any hiccups in throughput.
> 
> eth0: Tx descriptor write-back race.
> eth0: Tx descriptor write-back race.
> eth0: Tx descriptor write-back race.
> eth0: Transmit error, Tx status 00008800.
> eth0: Transmitter underrun, Tx threshold now 40.
> eth0: Tx descriptor write-back race.
> eth0: Transmit error, Tx status 00008800.
> eth0: Transmitter underrun, Tx threshold now 60.
> eth0: Tx descriptor write-back race.

These are only informational messages on errors handled by the new code.
You won't see them at the default debug level. I made a few observations
leading me to believe that the number of those errors can be further
reduced, but that will take quite a bit of work.

And there is still a Tx pause of up to a couple of seconds (net watchdog
kicking in) on every GB or so, especially under high load.

Roger