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Re: PIT, HZ, and devices

On Mon, Feb 11, 2002 at 03:06:39PM -0700, Tom Bradley wrote:
> It doesn't sound like a good idea to me. For one, any timing that is 
> dependant upon this will be off. I do believe that uptime and sleep are 
> dependant on jiffies which is incremented by the PIT (correct me if I am 
> wrong).  It is also the interrupt that decrements your time quantum for 
> scheduling. By changing the HZ value you will be changing your systems 
> performance. 

jiffies is not incremented by the PIT. jiffies is an ordinary variable
which is incremented by the kernel's ISR for the timer interrupt.


Cheers,
Bill
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