em0: watchdog timeout ...

[Jack Vogel]

You have a Vidalia (82573), please do the eeprom dump and let me
see it.

Jack


On Nov 14, 2007 7:57 AM, Robert Noland <rnoland at 2hip.net> wrote:
>
> On Wed, 2007-11-14 at 10:15 -0500, Mike Tancsa wrote:
> > At 03:58 PM 10/31/2007, Mike Tancsa wrote:
> > >To: John Baldwin <jhb at freebsd.org>, freebsd-current at freebsd.org
> > >From: Mike Tancsa <mike at sentex.net>
> > >Subject: Re: em0: watchdog timeout ...
> > >
> > >At 04:21 PM 10/31/2007, John Baldwin wrote:
> > >> >
> > >> > em1 at pci1:0:1:   class=0x020000 card=0x115e8086 chip=0x105e8086
> > >> > rev=0x06 hdr=0x00
> > >> >      vendor     = 'Intel Corporation'
> > >> >      device     = 'PRO/1000 PT'
> > >> >      class      = network
> > >> >      subclass   = ethernet
> > >> >      cap 01[c8] = powerspec 2  supports D0 D3  current D0
> > >> >      cap 05[d0] = MSI supports 1 message, 64 bit
> > >> >      cap 10[e0] = PCI-Express 1 endpoint
> > >> >
> > >> > its also in FastE mode and not gigE. Not sure if that makes a
> > >> > difference or not.
> > >>
> > >>What if you use MSI?
> > >
> > >How do I enable that ?
> >
> >
> >
> > Just to follow up on this thread for the archives, enabling MSI does
> > indeed seem to stop, or at least mitigate watchdog timeouts.   Its
> > been almost 2 weeks on this one box and we have had zero watchdog timeouts.
>
> I'm still getting these with MSI...
>
> em0 at pci0:2:0:0: class=0x020000 card=0x02f61014 chip=0x108c8086 rev=0x03
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82573E Intel Corporation 82573E Gigabit Ethernet
> Controller (Copper)'
>     class      = network
>     subclass   = ethernet
>     cap 01[c8] = powerspec 2  supports D0 D3  current D0
>     cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
>     cap 10[e0] = PCI-Express 1 endpoint
>
> rnoland-ibm% vmstat -i
> interrupt                          total       rate
> irq1: atkbd0                       87456          0
> irq4: sio0                             2          0
> irq6: fdc0                            10          0
> irq14: ata0                      1896659         11
> irq15: ata1                       422846          2
> irq16: uhci3 drm0               10788636         63
> irq22: pcm0                     15730204         92
> irq23: uhci0 ehci0                258850          1
> cpu0: timer                    338437976       1999
> irq256: em0                      1363782          8
> cpu1: timer                    338430141       1999
> Total                          707416562       4180
>
> FreeBSD rnoland-ibm.acs.internap.com 8.0-CURRENT FreeBSD 8.0-CURRENT
> #112: Tue Nov  6 14:11:24 EST 2007
> root at rnoland-ibm.acs.internap.com:/usr/obj/usr/src/sys/IBM  i386
>
> em0: watchdog timeout -- resetting
> em0: link state changed to DOWN
> em0: link state changed to UP
> em0: watchdog timeout -- resetting
> em0: link state changed to DOWN
> em0: link state changed to UP
>
> It seems to occur when a new connection is being created, typically from
> some fairly heavyweight application.  For example starting the acroread
> plugin in firefox to download a PDF.  I haven't had time to try and
> investigate it thoroughly, so this is all anecdotal.  But it is still
> occurring with MSI.
>
> robert.
>
> >
> > # vmstat -i
> > interrupt                          total       rate
> > irq1: atkbd0                           6          0
> > irq4: sio0                         59020          0
> > irq17: em3                        225204          0
> > irq19: atapci1                    243645          0
> > cpu0: timer                   1985129675       1997
> > irq256: em0                   1460563078       1470
> > irq257: em1                      2360550          2
> > irq258: em2                   1300707554       1309
> > cpu1: timer                   1985084642       1997
> > Total                         6734373374       6777
> >
> > However, it *seems* to increase the amount of missed packets. But,
> > traffic patterns are a little higher, so I cant be certain.
> >
> > em0: Missed Packets = 5514
> > em0: Receive No Buffers = 1950
> > em0: RX overruns = 9
> > em2: Missed Packets = 220073
> > em2: Receive No Buffers = 29034
> > em2: RX overruns = 1498
> >
> >
> >          ---Mike
> >
>
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