That could perhaps be a useful if you had just enough memory to run a game, if not for other processes using it too. In that case background services should be

That could perhaps be a useful if you had just enough memory to run a game, if not for other processes using it too. In that case background services should be written to swap while running the game which will probably cause stutters. Doing it before starting the game instead would be better, if it has to be done. So such a utility might then be useful in some cases when someone couldn't afford enough RAM.