Pan Xing wrote:

>       Is it possible to control a program's CPU usage exactly to xx%( 
> a specified value)? 

No, or at least not without writing the application to specifically
maintain a particular CPU usage percentage.

There isn't really any practicaly reason to force a process to use
exactly x% of CPU time. If the system is otherwise idle, a process can
consume 100% CPU time, regardless of it's scheduling priority. Also,
it may be impossible to force a process to use its allotted CPU quota
(e.g. because it is limited by I/O).

-- 
Glynn Clements <[EMAIL PROTECTED]>

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