amd64/96516: FreeBSD/amd64 intermittent Network-Problems

[John Baldwin]

On Saturday 29 April 2006 10:48, Ralf Folkerts wrote:
> Apr 29 15:07:05 beaster kernel: Interrupt storm detected on "irq21:"; throttling
>  interrupt source
> Apr 29 15:07:17 beaster kernel: xl0: watchdog timeout
> Apr 29 15:07:17 beaster kernel: xl0: link state changed to DOWN
> Apr 29 15:07:18 beaster kernel: nfs server boss:/share: not responding
> Apr 29 15:07:19 beaster kernel: xl0: link state changed to UP
> Apr 29 15:07:20 beaster kernel: nfs server boss:/share: not responding
> 
> i.e. first an Interrupt-Storm will be reported on irq21, then xl0 will stop working.
> 
> I already tried:
> - First replaced the NIC (a Broadcom one) with the 3C905. Didn't help.
> - Took the Mainboard to the Dealer and had it exchanged. Didn't help.
> - Placed a fan in front of the NIC.
> - Exchanged the Soundcard and
> - Exchanged the Graphics Card.
> - Updated the Baord's BIOS and FreeBSD (tracked RELENG_6). 
> Nothing helped.
> 
> I also installed Gentoo-Linux/amd64 on a free Partition and had that
> running for while, however, that never ran into a Problem. Now, I know
> this is no "proof" for error-free Hardware; hwoever, it seems to me
> that there is a slight problem in FreeBSD. Please also note that,
> except for the Network-hangs (which are very painfull, as I use NIS and
> NFS which means I cannot do much while the Network is down excepttrying
> to bring the machine down somewhat gracefully) I really enjoy
> FreeBSD/amd64!

Can you find out which IRQ Linux uses for the xl0 device?  Also, can you
try changing xl0 to use irq 21 by using the following tunable in the
loader:

hw.pci5.7.INTA.irq=21

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org