On Thu, 18 May 2000, Jason R Thorpe wrote:

>On Thu, May 18, 2000 at 02:13:22PM -0500, Ruibiao Qiu wrote:
>
> > So, I wonder if usleep() can get to less than 10 ms.  Does it has
> > anything to do with system clock resolution?  How can I find out
> > the current value of it?  How can I configure it? 
>
>Yes, in fact, it has everything to do with the system clock resolution.
>The system clock ticks every 10ms, so that is the minimum scheduling
>granularity.
>
>Try building your kernel with:
>
>options HZ=256
>
>That would make the granularity slightly less than 5ms, and might work
>on a PC.

I cant find this option in `man options`.  I am running a 1.4.1
GENERIC kernel.  What does this option mean?  Thanks.

          Regards

            Ruibiao