Subj : since ya'll are asking.
To   : Chris Hoppman
From : Jasen Betts
Date : Sat Dec 13 2003 11:50 am

Hi Chris.

11-Dec-03 13:21:44, Chris Hoppman wrote to All


 CH> Since ya'll are asking for someone to help.  Maybe you can help me with a 
 CH> 
 CH> problem I am having with a source code I am modifing.

 CH> It has timeslices built into it, but the CPU usage is still in the upper
 CH> limits (89-98%).  I sorta remember something I have read and wantted to
 CH> verify
 CH> it.  That the timeslices shouldn't be gave at anytime. Like say you do
 CH> this.

 CH> For A := 0 to 100 do
 CH>     begin
 CH>      {Do some stuff here}
 CH>      TimeSlice;
 CH>     end;

 CH> It would do 100 timeslices back to back.

first off check the documentation for "timeslice"  I don't find it
documented as a standard part of TP

What I'm guessing it does is inform a multitasker that the program is not
busy so that the multitasker can dedicate more cpu effort to running other
tasks.  (AFAIK windows OS/2 and Dessqview all do that in slightly different
ways (if you're using a dos compiler)

 CH> I have read that you should time them to be at least 55 ms apart
 CH> ( depending on the system ).  That if you do like I did above it will
 CH> accually make the application use more of the CPU.

I don't see how it could cause more CPU usage than putting some form of
delay loop between calls to timeslice.

 CH> Maybe someone could explain to me all about Time Slices.  Or point me in
 CH> the direction of a place I can read up on them.

OTOH if you want to delay for a long time there may be some sort of sleep
procedure avaialable. (but your code suggests to me that you want to
"do some stuff" between timeslices so probably you are doing it the best way.

 -=> Bye <=-



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 * Origin: Entropy isn't what it used to be. (3:640/1042)

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