Re: HZ value changed from 250 to 1000 in the latest updated kernel

[Arjan van de Ven <arjan fenrus demon nl>]

On Tue, 2006-11-21 at 15:12 +0300, Dmitry Butskoy wrote:
> Dave Jones wrote:
> 
> >A coincidence I hope.  I'm not sure how increased timing resolution could
> >cause the drifting effects you've observed.  I've also not noticed
> >any other similar reports (yet?).
> >
> >		Dave
> >  
> >
> Dave,
> As you have appeared here, could you please comment why HZ was changed?
> 
> I have some confusion on this.
> First, the upstream kernel has this changed (since 2.6.13 ?) in backward 
> direction, i.e. from 1000 to 250.

actually the upstream kernel changed to offer a choice, with 3 options,
1000, 250 and 100. This was done after it was recognized that there are
different valid scenarios for either of those values.

> Second, why Fedora's change is implemented just now (in the middle of 
> life cycle), but not at distro release boundary?

does it matter? This is only internally visible to the kernel, not to
userspace (other than an improvement in accuracy)