low HZ value causes "Time Warp Bug" (re: this Puny Pentium2 suddenly became 45% slower!)

[Daniel O'Connor]

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On Fri, 7 May 2004 10:25, P.D. Seniura wrote:
> > > It seems this bug happens when the HZ value goes below 16
> > > (either by compiling 'options HZ=' in kernel or setting
> > > sysctl 'kern.hz=' in /boot/loader.conf).  The computed
> > > 'ticks' value becomes too large for 2-byte int producing
> > > crazy overflowed numbers elsewhere.
> >
> > 16 is pretty low..
> > Then again it would be nice if it warned you or something similar when
> > you tried it :)
>
> Heh, I got HZ set to 20 while it does
> buildworld (~9 hours) and portupgrade overnight.
> The idea is "less slicing and more doing". ;)

Fair enough..
I wouldn't expect you'd notice the difference between 20 and 200 though..

- -- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
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