_beginthreadex fill up memory

VladEmilian (2)
Hello

I am having this test code:
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unsigned __stdcall thread_test(void *)
{
for(int i = 0; i < 10000; i++)
{
    i+=1;
    i-=1;
}//simulting processing

_endthreadex( 0 );
}

int main()
{
HANDLE hThread;
while(1)
{
    getchar();


    hThread = (HANDLE)_beginthreadex( NULL, 0, thread_test, 0, 0, NULL );
    CloseHandle( hThread );
}
}


The problem with it is that it is filling up(leaking) the memory RAM with 4k every time I press ENTER. I am seeing it via task manager. However, i tested it up and the memory stops filling up when it reach around 133.000K.
After discovering that it stops at that amount, I though that the memory is not actually used/leaked, but I noticed that when the memory is 133.000, the program runs like 4-5 time slower than it did at the beginning (higher the memory - slower the program runs).

This is only a test program, but I want to make a multithreading server (i've made the processing and sending and all the other stuffs; right now, instead of making a thread, i am calling the function that process stuffs) and I am stuck at this part, because I don't want my server to run 5 times slower after 15-20 mins. The design that I wanna use is the same as in the code above: in function main there is a loop that waits for connections; when it got one, it creates a thread that will process that connection.

So the question is: how can I make it not to take up memory after it exits?

I compiled it with codeblocks and visual studio. On both the memory is filling up (the max limit is for codeblocks, i don't know if visual studio have different limit).
Please don't suggest me the thread class.
kbw (9488)
I see no such behavior. There is no leak. I didn't measure performance over time.

I used VS2010 Express (32bit) on Windows 7 (64bit).

The is my complete code.
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#include <Windows.h>
#include <process.h>
#include <stdio.h>

unsigned __stdcall thread_test(void *)
{
	for(int i = 0; i < 10000; i++)
	{
		i+=1;
		i-=1;
	}//simulting processing

	_endthreadex(0);
	return 0;
}

int main()
{
	while (1)
	{
		getchar();

		HANDLE hThread = (HANDLE)_beginthreadex( NULL, 0, thread_test, NULL, 0, NULL );
		CloseHandle( hThread );
	}
}
VladEmilian (2)
I am using visual studio 2010 ultimate on windows 7 64 bit
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