[Shootout-list] fannkuch (timer resolution; HZ=1000?)

[Isaac Gouy]

--- Greg Buchholz <sleepingsquirrel@yahoo.com> wrote:
> --- Christophe TROESTLER <del-con@tiscali.be> wrote:
> > 
> > The point is that the variation is so big w.r.t. the running time
> > (25%) that it shows the program should run longer to avoid random
> > effects to take such an importance in the result.
> > 
> 
>     Quite a few people have been discussing the 0.01 second timing
> resolution that the shootout uses. 

We've been here before:

http://lists.alioth.debian.org/pipermail/shootout-list/2004-August/000083.html


> This sounds suspiciously like it
> might be limited by Linux's timer resolution.  The default value used
> to
> be 10ms (HZ 100), but I thought that changed with 2.6 kernels (to
> HZ=1000).  Is the debian 2.6.8 kernel that the shootout uses a stock
> one,
> or does debian do some munging of their own?  Is this a problem that
> could be solved by recompiling the kernel?
> 
> Anyone in the know?
> 
> Greg Buchholz



	
		
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