yongari nfe problems
Pyun YongHyeon
pyunyh at gmail.com
Thu Apr 5 00:28:22 UTC 2007
On Wed, Apr 04, 2007 at 09:27:00PM +0200, Rainer Hurling wrote:
> Pyun YongHyeon schrieb:
> >On Tue, Apr 03, 2007 at 06:49:42PM +0200, Rainer Hurling wrote:
> >
> >[...]
> > >
> > > In "man ehci(4)" I found:
> > >
> > > -------
> > > BUGS
> > > The driver is not finished and is quite buggy.
> > > There is currently no support for isochronous transfers.
> > > -------
> > >
> > > Possibly this could cause the observed "dropouts" of nfe0 from a few
> > > seconds till several minutes?
> > >
> >
> >I'm not familiar with ehci(4) but I think it has nothing to do with
> >missing Tx completion interrupts observed on nfe(4).
> >
> > >
> > > Is there a knob or option in driver nfe(4) I can use to try classical
> > > polling or any 'lower' mode of operation?
> > >
> >
> >Add 'options DEVICE_POLLING' into kernel configuration file and
> >rebuild your kernel. Use ifconfig(8) to enable/disable polling(4)
> >feature.
> >See polling(4) for more detailed description and tuning parameters.
> >
>
> Thank you for this hint. I compiled my kernel with 'options
> DEVICE_POLLING' and reboot.
>
> For the first four hours I get no new watchdog timeouts. But then,
> without heavy load and without using usb devices, I get many timeouts.
>
> Obiously nfe(4) does not support this polling feature? Or we are looking
> at the wrong side ...
>
Did you enable polling feature with ifconfig(8)?
(e.g. ifconfig nfe0 polling)
You should see POLLING in flags field in ifconfig output.
> Rainer
--
Regards,
Pyun YongHyeon
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