>VFP 6.0: I have problems with slowdowning the application, when it's running a longer time. I thought it's due to free memory, so I started to watch the sys(1016) function showing the memory used by user objects. I found out, that the amount of used memory is still increasing!
>Here's a simple example - you can try it too:
>
>I started newly VFP 6.0:
>sys(1016) shows 308 012 B.
>I execute m.O=CreateObject("Form") (new empty form)
>sys(1016) now shows 315 172 B. (form takes 7160 B of memory)
>now I do RELEASE m.O or i m.O.Release and then Release m.O, (doesn't matter)
>sys(1016) now shows 309 832 B - so part of used memory was released, but part of it remains used - 1820 B !
>
>Repeating creating and releasing objects (and that's what mostly applications do...), the used memory is still increasing and increasing and application is slowing down and slowing down...
>
>After doing CLEAR MEMO, sys(1016) shows 309768 (still 1756 B is somewhere). I tried also partial CLEARs, but with no effect. Only after CLEAR ALL shows 308 360 - remained only 348 B, but you never achieve the initial value 308 012 B).
>
>The question is: Where is the memory? What can I do to release the memory? Or I miss some setting?
>Help needed. Thanks.
>Petr


Petr,

VFP6.0 (SP3) is very stable and does not leak memory in this fashion. What you might have is what is called dangling references, that is, objects that are instantiated in your form but are not killed when you destroy your form. Also, don't trust the VFP memory functions too much... I also see strange things with SYS(1016), yet my apps are stable.
Another point that might get your attention is the reports, where a bad printer driver might leak memory.

By the way, I was in Prague last August, and enjoyed your city very much.

José