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SubjectRe: [patch] jiffies wraparound [Re: 2.1.125 Show stopper list: Draft]

On Mon, 19 Oct 1998 ralf@uni-koblenz.de wrote:

> > I guess it depends on your agenda. An OS that has to be rebooted every
> > 490 days isnt a very good embedded system large or small. "Please remember
> > to reboot your building airconditioning control system about next august" ;)
> >
> > View from on high noted, want me to take it off the list ?
>
> Some people are running kernel at a higher HZ which brings them much closer
> to the danger zone.

good point. Especially soft-RT-people like the choice of HZ=1000,
millisec-accuracy scheduling and timers. I remember someone even used
10000, to get 100 usec accuracy timers. Even a low-end PC can take HZ=10k.
That one wraps jiffies every 4 days!

-- mingo



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