what will happen when the jiffies overflow ?

Dave Hylands dhylands at gmail.com
Thu Sep 20 11:00:51 EDT 2012


On Thu, Sep 20, 2012 at 7:09 AM, Fan Yang <lljyangfan at gmail.com> wrote:
> hi all:
>        As far as I known, the var jiffies in the kernel will overflow after
> 497days as the Hz defined 100. So what waill happen when the jiffies
> overflow?

It will start back at zero.

Everything should continue to work as before.

In fact, jiffies are initialized to -300 seconds, so that it will
overflow 5 minutes after startup, just to verify that everything works

Dave Hylands
Shuswap, BC, Canada

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