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Date:      Tue, 2 May 2006 16:18:15 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        Ralf Folkerts <ralf.folkerts@gmx.de>
Cc:        freebsd-amd64@freebsd.org
Subject:   Re: amd64/96516: FreeBSD/amd64 intermittent Network-Problems
Message-ID:  <200605021618.17308.jhb@freebsd.org>
In-Reply-To: <1146592920.1030.5.camel@beaster>
References:  <200605011700.k41H0W55054176@freefall.freebsd.org> <200605011411.44107.jhb@freebsd.org> <1146592920.1030.5.camel@beaster>

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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@gmx.de>
> > > To: bug-followup@FreeBSD.org,  ralf.folkerts@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_
> 
> 

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



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