Re: Gurus, a silly question for preemptive behavior

[jesse]

Paulo:
 
   I already said in the messsage that my user space
application has a low nice priority, i set it to 10.
since my application has low priority compared to
other user space applications, it is supposed to be
interrupted. but it is not.

 regards!

jesse


--- Paulo Marques <pmarques@xxxxxxxxxxxx> wrote:

> jesse wrote:
> > Con:
> > 
> >    thank you for your prompt reply in the holiday
> > season. 
> > 
> >    My point is: Even kernel 2.4 is not 
> > preemptive, the latence should be very
> > minimal.(<300ms)
> > why user space application with low nice priority
> > can't be effectively interrupted and holds the CPU
> > resource since all user space application is
> > preemptive?
> 
> If your process has got work to do and has a higher
> priority than other 
> processes, it gets to run. If you don't want this
> behavior, don't give 
> it such a high priority.
> 
> If you want low latency to do some quick high
> priority task, just do it 
> quickly and relinquish the processor, instead of
> hogging it.
> 
> What are you trying to accomplish, anyway?
> 
> -- 
> Paulo Marques - www.grupopie.com
> 
> "A journey of a thousand miles begins with a single
> step."
> Lao-tzu, The Way of Lao-tzu
> 

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