Re: [RFC] Re: 2.6.20->2.6.21 - networking dies after random time

Jarek Poplawski
2007-08-09T15:32:23Z

On Thu, Aug 09, 2007 at 06:04:34PM +0200, Andi Kleen wrote:
> Jarek Poplawski <jarkao2@o2.pl> writes:
>
> > It seems, we can start to think about some preferred solutions,
> > already. Here are some of my preliminary conclusions and suggestions.
> >
> > The problem of timeouts with some 'older' network cards seems to hit
> > mainly x86_64 arch, and after diagnosing and testing (still beeing
> > done) it's caused by resending level type irqs.
>
> i386 interrupt code should be similar, except for the lack of
> per CPU irqs, but that shouldnt' affect resending.
>
> >
> > Possible solutions:
>
> We should probably at least add some statistic counters to the
> standard kernel to try to detect these cases.
>
> > It looks like these changes are needed for this x86_64 only,
>
> Why?

Maybe I missed something, but considering the popularity of i386
there was not so much of consistent reporting?! I was very surprised,
when I read a few days ago that Linus seems to think that this one
here is only an individual problem...

Jarek P.