APIC error on CPU0: 00(02)

APIC error on CPU0: 00(02)

[Ben Greear]

Kernel: 2.4.20-pre8

Machine: dual 1.66Ghz AMD machine, Tyan motherboard 64/66 PCI,
   2 Intel PRO/1000 MT nics,
   1 DFE-570tx 4-port tulip based NIC.
   2 built-in 3-com NICs.

I was running 20Mbps over each of the 4 tulip 100Mbps ports, and nothing over
the gigE ports...  Things ran fine, but I occasionally saw messages like
this:

[root@localhost lanforge]# eth7: (19541091) System Error occured (2)
eth7: (19547299) System Error occured (2)
eth6: (19163408) System Error occured (2)
[root@localhost lanforge]# eth6: (19167052) System Error occured (2)

[root@localhost lanforge]# eth6: (19171414) System Error occured (2)
eth7: (19560749) System Error occured (2)
eth6: (19187463) System Error occured (2)


I mounted another machine across NFS using one of the 3-com ports, and
started this command: tar -xvzf /mnt/blah/kernel.foo.tgz

At this point, the machine starts behaving extremely slowly, but after
a few fits and bursts, it finishes and I can get a response at the prompt
again.

I see more messages similar to those above, and I also see these errors:

[root@localhost lanforge]# eth6: (19773823) System Error occured (2)
APIC error on CPU0: 00(02)
APIC error on CPU1: 00(02)


If anyone has any ideas, or can suggest more debugging information I can
gather to make the problem easier to solve, please let me know!

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>       <Ben_Greear AT excite.com>
President of Candela Technologies Inc      http://www.candelatech.com
ScryMUD:  http://scry.wanfear.com     http://scry.wanfear.com/~greear

Re: APIC error on CPU0: 00(02)

[Mikael Pettersson]

On Sat, 28 Sep 2002 19:44:08 -0700, Ben Greear wrote:
>Kernel: 2.4.20-pre8
>
>Machine: dual 1.66Ghz AMD machine, Tyan motherboard 64/66 PCI,
>...
>APIC error on CPU0: 00(02)
>APIC error on CPU1: 00(02)

Receive Checksum Error on the APIC bus.

This indicates a hardware problem. Dual-Athlon boards
have a reputation for being unstable unless everything
is exactly right: power supply, cooling, not overclocked,
MP not XP CPUs, correct type memory modules. BIOS MP 1.1
or 1.4 settings may also be critical.

Also double-check all connectors between the mainboard and
the case: at least one board (the ASUS a7m266-d I think)
has or had bugs in its manual.

/Mikael

APIC ERRor on CPU0: 00(02) ...

[V.P.]

I have a Motherboard BP6 with two Celeron 500 (Not overclocked) and
Linux Kernel-2.4

and I have de message

APIC error on CPU0: 00(02)
APIC error on CPU1: 00(08)
APIC error on CPU1: 08(04)
APIC error on CPU0: 02(08)
APIC error on CPU0: 08(08)
APIC error on CPU1: 04(04)
APIC error on CPU0: 08(02)
APIC error on CPU1: 04(02)


What wrongs ?

 This message doesn 't  appears in Kernel-2.2.17 only in Kernel-2.4

  Any Help is apreciated


  V.P.                 ***  Linux **  Porto *** Portugal

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Re: APIC ERRor on CPU0: 00(02) ...

[Mark Hahn]

> I have a Motherboard BP6 with two Celeron 500 (Not overclocked) and
...
> APIC error on CPU1: 00(08)
...
> What wrongs ?

Abit designed the board wrong.  there are things you can do to reduce 
the incidence of this error: upgrading the bios, better cooling, more
powerful power supply, replacing an out-of-spec capacitor (if v1.1).
jeez, it's almost like a 12-step program for recovering from BP6ing ;)

>  This message doesn 't  appears in Kernel-2.2.17 only in Kernel-2.4

indeed: the error still happens in 2.2, but is simply not reported.
note also that this message is a *warning* - an inter-apic message 
was corrupted, and automatically retried.

regards, mark hahn.

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Re: APIC ERRor on CPU0: 00(02) ...

[Dr. Kelsey Hudson]

This is due to your piece of trash motherboard. The reason that the older
kernel didn't catch these errors is because (IIRC) it wasn't looking for
them; they were there even then. The BP6 is a low-end mainboard and was
engineered very poorly; these errors are due to that fact alone.

Talk to you later,

-Kelsey

On Fri, 12 Jan 2001, V.P. wrote:

> I have a Motherboard BP6 with two Celeron 500 (Not overclocked) and
> Linux Kernel-2.4
> 
> and I have de message
> 
> APIC error on CPU0: 00(02)
> APIC error on CPU1: 00(08)
> APIC error on CPU1: 08(04)
> APIC error on CPU0: 02(08)
> APIC error on CPU0: 08(08)
> APIC error on CPU1: 04(04)
> APIC error on CPU0: 08(02)
> APIC error on CPU1: 04(02)
> 
> 
> What wrongs ?
> 
>  This message doesn 't  appears in Kernel-2.2.17 only in Kernel-2.4
> 
>   Any Help is apreciated
> 
> 
>   V.P.                 ***  Linux **  Porto *** Portugal
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> Please read the FAQ at http://www.tux.org/lkml/
> 

-- 
 Kelsey Hudson                                           khudson@ctica.com 
 Software Engineer
 Compendium Technologies, Inc                               (619) 725-0771
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Re: APIC ERRor on CPU0: 00(02) ...

[Roeland Th. Jansen]

On Fri, Jan 12, 2001 at 02:27:07PM -0800, Dr. Kelsey Hudson wrote:
> 
> This is due to your piece of trash motherboard. The reason that the older
> kernel didn't catch these errors is because (IIRC) it wasn't looking for
> them; they were there even then. The BP6 is a low-end mainboard and was
> engineered very poorly; these errors are due to that fact alone.

you can say about the BP6 what you want but it appears that there are
(if your vision is right) many other low end SMP boards categorized
trash. there has been one mistake with it and that's the capacitor
behind a regulator that may have been mis-dimentioned due to the
partchange of that particular capacitor.

my 2.2 kernel running on the BP6 proves that it may work very well,
unless you think that uptimes of > 40 days is bad.

-- 
Grobbebol's Home                   |  Don't give in to spammers.   -o)
http://www.xs4all.nl/~bengel       | Use your real e-mail address   /\
Linux 2.2.16 SMP 2x466MHz / 256 MB |        on Usenet.             _\_v  
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Re: APIC ERRor on CPU0: 00(02) ...

[Dr. Kelsey Hudson]

On Sat, 13 Jan 2001, Roeland Th. Jansen wrote:

> you can say about the BP6 what you want but it appears that there are
> (if your vision is right) many other low end SMP boards categorized
> trash. there has been one mistake with it and that's the capacitor
> behind a regulator that may have been mis-dimentioned due to the
> partchange of that particular capacitor.

::nods:: Yes, I realize that there are other low-end SMP boards
categorized trash, but when someone asks me what low-end SMP motherboard
to get, the first thing I tell them is to /not/ get the BP6.

> my 2.2 kernel running on the BP6 proves that it may work very well,
> unless you think that uptimes of > 40 days is bad.

If you think that a stream of APIC retries is 'working very well,' then
I'm sorry to say, you've got another thing coming. :p Besides, a 40 day
uptime is *not* all that spectacular; I've had uptimes in excess of 200
days before, running on garbage hardware (worse than even the BP6).

anyways, the fact remains that it was your motherboard that is causing
these errors. The retries are still there in 2.2, they just aren't
reported.

ciau
-Kelsey

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