SMP Kernel Problem

SMP Kernel Problem

[Nic Wilson]

I received and error message telling me to send an email to this 
address. I'm using kernel 2.4.9-13 (ASPLinux) on a Dual P3 1Ghz and an 
ASUS CUV4X-D motherboard. The text around the error is as follows:

unexpected IO-APIC, please mail
to linux-smp@vger.kernel.org
...........done.
Using local APIC timer interrupts.
calibrating APIC timer...
.....CPU clock speed is 1004.4802Mhz.
.....host bus clock speed is 133.9308Mhz.
cpu:0, clocks:1339308, slice 446436
cpu:0<T0: 1339296, T1: 274960, D: 171464, S: 446436, C: 1339308>
cpu:1<T0: 1339296, T1: 274960, D: 171464, S: 446436, C: 1339308>
checking TSC synchronization across CPUs: passed.

There is some other stuff and then it just stops and the screen goes 
blank. Then I start hearing beeps come from my motherboard telling me 
that one of the CPUs is over heating. I'm going to try upgrading my 
kernel to 2.4.19 and see if this fixes the error. If there's anything 
you would like me to do let me know.

Nic Wilson

Re: SMP Kernel Problem

[Alan Cox]

On Wed, 2002-08-07 at 18:54, Nic Wilson wrote:
> I received and error message telling me to send an email to this 
> address. I'm using kernel 2.4.9-13 (ASPLinux) on a Dual P3 1Ghz and an 
> ASUS CUV4X-D motherboard. The text around the error is as follows:

That board will hang solid. Set the BIOS options to Intel MP1.1 not 1.4
and/or upgrade to a recent BIOS.

> There is some other stuff and then it just stops and the screen goes 
> blank. Then I start hearing beeps come from my motherboard telling me 
> that one of the CPUs is over heating. I'm going to try upgrading my 

We end up crashing with the CPU in a tight loop. That should not be
causing an overheat unless there is also a problem with your cooling

Re: SMP Kernel Problem

[Bruce M Beach]

On Wed, 7 Aug 2002, Nic Wilson wrote:


> There is some other stuff and then it just stops and the screen goes
> blank. Then I start hearing beeps come from my motherboard telling me
> that one of the CPUs is over heating. I'm going to try upgrading my
> kernel to 2.4.19 and see if this fixes the error. If there's anything
> you would like me to do let me know.
>
> Nic Wilson
>

  I had this problem on a Asus single 1Ghz cpu motherboard where it
  was saying that the CPU was overheating, in a situation where
  it couldn't possibly true( the computer was on for 2 minutes)
  I disabled temperature monitoring, set the cpu to a lower speed
  and got the thing up and going and used it for several months.
  The mother board (and I mean the motherboard) could not compile
  xwindows. It would build for a while and then eventually
  die with the most spectacular crash. (messages from the kernel
  about page faults and so on) I have two other machines, a slow
  cpu and a dual 2.2Ghz xeon P4 and they compile anything without
  problems.  The part I liked best was the instructions to short
  a jumper to reset the cmos memory. Smoke came out. I look very
  closely at the board at it seems that they forgot to put a pullup
  between the power supply and the Jumper. I solve all the problems by
  replacing it by a non-asus motherboard.

  Bruce

Re: SMP Kernel Problem

[Bruce M Beach]

On Thu, 8 Aug 2002, Nic Wilson wrote:

> Ok. Thanks. What kind of MB do you use for your Dual 2.2Ghz?
>
> Nic
>

  Sorry for the delay. I have a tyan motherboard Thunder i7500
  which seems to work okay. I've had it for a couple of months
  Currently I can build 122 core packages, (include gcc, xwindows, glib etc)
  in the following time.
        n_system.sh build_all=02:13:10
  I can get it down to less than a hour but my schedualler
  is unstable and get many segfaults and so on. If you want to have
  some fun try the following code and watch top

     main()
     {
       while (1)
       {
       }
     }
  compile it with
         gcc -O0 -o minimal minimal.c
  so that the loop doesn't get optimized out. I ran 2 instances of the
  above program in the background and got the following compile times

   n_system.sh build_all=03:40:00

  Bruce