Eric Anderson píše v út 22. 08. 2006 v 13:58 -0500: > On 08/22/06 13:53, Gleb Smirnoff wrote: > > On Tue, Aug 22, 2006 at 10:35:19AM -0500, Eric Anderson wrote: > > E> >E> >P> yongari 2006-08-22 02:32:48 UTC > > E> >E> >P> > > E> >E> >P> FreeBSD src repository > > E> >E> >P> > > E> >E> >P> Modified files: > > E> >E> >P> sys/dev/em if_em.c > > E> >E> >P> Log: > > E> >E> >P> It seems that em(4) misses Tx completion interrupts under > > certain > > E> >E> >P> conditions. The cause of missing Tx completion interrupts > > comes > > E> >from > > E> >E> >P> Tx interrupt moderation mechanism(delayed interrupts) or > > chipset > > E> >bug. > > E> >E> >P> If Tx interrupt moderation mechanism is the cause of false > > E> >watchdog > > E> >E> >P> timeout error we should have to fix all device drivers that > > have > > E> >Tx > > E> >E> >P> interrupt moderation capability. We may need more investigation > > E> >E> >P> for this issue. Anyway, the fix is the same for both cases. > > E> >E> >P> > > E> >E> >P> This should fix occasional watchdog timeout errors seen on a > > few > > E> >E> >P> systems. > > E> >E> >P> > > E> >E> >P> Reported by: -net, Patrick M. Hausen < hausen AT punkt DOT > > de > > > E> >E> >P> Tested by: Patrick M. Hausen < hausen AT punkt DOT de > > > E> >E> > > > E> >E> >This look like a workaround, not a fix the root of the problem. > > Several > > E> >E> >people on net said that this problem disappears if > > debug.mpsafenet=0. > > E> >E> >So I think there is a problem in FreeBSD or driver, not in chip. > > E> >E> > > E> >E> And it also worked perfectly for a very very long time until 6.x > > tree. > > E> >E> I went from 5-STABLE to 6-STABLE and started seeing it a lot ( a few > > E> >E> times per day) on a couple servers. > > E> > > > E> >In 5-STABLE the watchdog events were not logged, but the watchdog was > > E> >processed. > > E> > > E> But my interface never seemed to disappear (I page if the interface goes > > E> down), and I'd still notice a link up/down, correct? > > > > In 5-STABLE the interface up/down events were not logged, either. > > > > > Ok. Well, I just recalled that on a separate system (my workstation > actually), I went from 6.1-R to 6-STABLE as of about 8 days ago, and it > now exhibits the problem too, which hasn't happened before.
Yes, there was an MFC of new em driver to 6-STABLE after 6.1-RELEASE.
I was badly hit by it too. But it appears only on some revisions of the
silicon...
--
Pav Lucistnik <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]>
Like 'Do Notte Buye Betamacks.' That was a prediction for 1972.
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