amd64/96516: FreeBSD/amd64 intermittent Network-Problems

[Ralf Folkerts]

Am Dienstag, den 02.05.2006, 16:18 -0400 schrieb John Baldwin:

Hi John,

> On Tuesday 02 May 2006 14:02, Ralf Folkerts wrote:
> > Am Montag, den 01.05.2006, 14:11 -0400 schrieb John Baldwin:
> > 
> > Hi John,
> > 
> > > On Monday 01 May 2006 13:00, Ralf Folkerts wrote:
> > > > The following reply was made to PR amd64/96516; it has been noted by GNATS.
> > > > 
> > > > From: Ralf Folkerts <ralf.folkerts at gmx.de>
> > > > To: bug-followup at FreeBSD.org,  ralf.folkerts at gmx.de
> > > > Cc:  
> > > > Subject: Re: amd64/96516: FreeBSD/amd64 intermittent Network-Problems
> > > > Date: Mon, 01 May 2006 18:52:40 +0200
> > > > 
> > > >  This is a cryptographically signed message in MIME format.
> > > >  
> > > >  --------------ms080403000000010307050905
> > > >  Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> > > >  Content-Transfer-Encoding: 7bit
> > > >  
> > > >  Hi John,
> > > >  
> > > >  thanks for your reply! Here's an excerpt from Linux' lspci -v:
> > > >  
> > > >  05:07.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] 
> > > >  (rev 30
> > > >  )
> > > >          Subsystem: 3Com Corporation 3C905B Fast Etherlink XL 10/100
> > > >          Flags: bus master, medium devsel, latency 32, IRQ 22
> > > >          I/O ports at c880 [size=128]
> > > >          Memory at feaffc00 (32-bit, non-prefetchable) [size=128]
> > > >          Expansion ROM at 50000000 [disabled] [size=128K]
> > > >          Capabilities: [dc] Power Management version 1
> > > 
> > > Ok, so it's on IRQ 22.  Does linux have any other devices on IRQ 21?
> > > 
> > > >  When I put the "hw.pci5.7.INTA.irq=21" in the Loader I don't get any 
> > > >  Network at all:
> > > 
> > > Ok, so it's not that xl0 is actually on irq 21.
> > > 
> > > It would be helpful to know which device is suddently spouting
> > > interrupts.  Can you make it go away by removing the sound or
> > > USB drivers?
> > 
> > ok, I'll give that a try! Will it be sufficient to just remove the
> > Driver or should I remove the Sound Card and disable USB in BIOS? Also,
> > will Sound and USB be all? Should I also try another Graphics Card?
> 
> Just removing the driver should be fine.  Mostly I want to see if turning
> off the other devices listening on IRQ 21 helps.  If it does then I'd like
> you to try just turning one of them off at a time to see if it is related
> to one of the devices.
> 
> > However, as the problem just occurs intermittent (sometimes it doesn't
> > show for 2 - 3 weeks, then again it happens 3 times a day) it may take a
> > bit for me to get back to this; I'll try to run some "heavy" tests at
> > latest over this weekend...
> > 
> > Cheers,
> > _ralf_

well, I turned off Sound on the 2nd May and it seems it "cured" the
Problem; at least, also I ran several "stress"-tests, the machine ran
fine and didn't show the "Interrupt Storm" Error.

Now, how should I go on? I could enable Sound again and raise the
"Storm-Limit" via sysctl and close the PR. However, as I already
exchanged Sound Card, NIC and Mainboard (and all these Components
(except for the Mainboard) work fine in a i386 FreeBSD-machine) it seems
there is either something wrong woth the Chipset-Support in
FreeBSD/amd64 OR the Chipset itself may be buggy, the Board's Design
could be crap or something like this.

MTIA!
Cheers,
_ralf_


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