amd64/96516: FreeBSD/amd64 intermittent Network-Problems

[John Baldwin]

The following reply was made to PR amd64/96516; it has been noted by GNATS.

From: John Baldwin <jhb at freebsd.org>
To: freebsd-amd64 at freebsd.org
Cc: Ralf Folkerts <ralf.folkerts at gmx.de>, freebsd-gnats-submit at freebsd.org
Subject: Re: amd64/96516: FreeBSD/amd64 intermittent Network-Problems
Date: Mon, 1 May 2006 11:32:17 -0400

 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