Quite an adventure!...

> maxcpus didn't do the trick (don't know why), but I found a way
> of "hot-plugging" CPUs:
> 
> echo 0 >/sys/devices/system/cpu/cpuX/online 
> 
> will take cpuX off-line. 

Good stuff.

You can enable a cpu again by using:

echo 1 >/sys/devices/system/cpu/cpuX/online


> Running 3 threads of "small FFT test" works fine, nothing unusual to
> report.
> Running 3 threads of "large FFT test" makes the system hang after a
> couple of minutes.
> Running 3 threads of "blend" makes the system reboot after 30-60seconds. 

OK, the interesting bit is whether you get those same results
independent of _which_ core you disable.

Can you test for when you have core #0 disabled, then with core #1
disabled and so on?

The suspicions are that you might see core #2 fail sooner than the others...


I think the most useful tests will be when you have a known good
heatsink contact!

Good luck,
Martin

-- 
----------------
Martin Lomas
[EMAIL PROTECTED]
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