HZ > 100 overhead

[est]

Paul Barton-Davis discourseth:
> >
> >Wouldn't you say that an HZ > 100 kernel is the cleanest solution?
> 
> its the cleanest, but not the best. HZ = 1000 adds about 8% overhead
> to IRQ processing *all the time*.

Are you *sure* about this?  I seem to remember there was some debate
about that figure on linux-kernel.

Eric