Re: Program is very large in memory. How to decrease ?

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#4661

From: Ed Mulroy
Date: Fri, 16 Dec 2005 16:28

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When Windows loads a program it assigns a stack size for that program.  The 
full size of that stack is not actually allocated but it is included in the 
reported memory use.  Only a small stack is allocated along with a protected 
'guard page' following it.  When the program uses enough stack that it 
access the guard page, Windows uses that access as a trigger to add another 
chunk of memory to the stack and allocate a guard page following that.

In other words, most of that reported memory usage is virtual memory, memory 
that is not physically allocated.

The linker options allow you to specify a stack size.

.  Ed

> MMX wrote in message
> news:43a27bfd@newsgroups.borland.com...
> Hi.
> I've wrote the service program using only WinAPI.  Compiled .exe file is 
> ~60
> kb on disk. But when it executing it tooks ~950 kb in memory even if do
> nothing just:
> while (true) Sleep(50);
>
> Why is it so big in memory and how to decrease it size.

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Subject: Re: Program is very large in memory. How to decrease ?
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