My program never releases the memory back. Why?

Question

I have a MDI program. When It starts it takes 2-3MB of RAM. Then, in this program I create about 260 MDI child windows (each has a TStringGrid, a bitmap and some other contr

Answer 1

Answer:

I just removed FastMM from my project and the program returned to few MB after freeing all those child windows. Many may argue that this is not a misbehavior and that FastMM is doing this in order to do some kind of kinky memory optimizations. They may be true. However, it may be good for MY application but it may not be good of other running applications.

So, at least we know who causes this. I worried to a whole day that may program is leaking RAM like an old bucket. I am relieved now.

UPDATE:

To confirm that this behavior is generated by FastMM (as suggested by Barry Kelly) I created a second program that allocated A LOT of RAM. As soon as Windows ran out of RAM, my program memory utilization returned to its original value.
(Note: I am not saying there is a bug in FastMM!)

My program is not leaking. Problem solved.