[Gllug] CPU exerciser?

[John Hearns]

On Mon, 2004-10-25 at 11:33, Richard Jones wrote:
> On Mon, Oct 25, 2004 at 09:51:15AM +0100, John Hearns wrote:
> > Does anyone know of such a thing as a CPU exerciser code?
> > ie. something which makes the CPU execute all instructions in turn.
> > I'm thinking along the lines of Memtest, which we use extensively.
> 
> Most instructions are never used (the original observation behind RISC
> computing).  I'm sure that doing some thing big and CPU intensive like
> compiling the kernel will quickly exercise those instructions which
> are used.
We do that - a 20x cycle of kernel compiles as a burn-in.
Also run a CPU torture test program to heat the CPUs
It just seems that the HPL benchmark is hitting the 'correct'
instruction to cause a complete halt.


> The nearest I can think of a true CPU tester would be 'crashme'.
> http://people.delphiforums.com/gjc/crashme.html
Thanks - I'll have a look at that.

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