Re: HP48 : recursion : more and more slower


"Andreas Möller" <andreas_moellerNOSPAM@xxxxxx> wrote in message
news:c050d2ce-6721-4e85-970a-d894045ad2a1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hello,

But why, when return stack grow up, is system slowing down ?
However Available memory are sufficient...

Because the system has to keep track of each pointer from the SYS-RPL-
ReturnStack and this "keeping track" takes longer if there are more
pointers to keep track off (uhh, what a sentence ;-)

The same with the RPL Data stack ( aka "normal stack" ): Put 5000
objects on the stack and you will notice how the whole calc slows
down, even if there is a lot of free memory available. Again, because
the system has to keep track of the pointers shown in the "normal
stack".

HTH,
Andreas
http://www.software49g.gmxhome.de

Yes !! Here is a clear answer :) Thanks

So, I've already another question : lol
When in the process, hp48 is keeping track ?

For exemple, if there are 5000 objects on
data stack, we push the SWAP button :
When is the 'keeping track' process running ?
Is it an internal operation of RPL operating system,
(Memory management etc..)
or is it an internal system call in any command ?


.