Now run the same code on a VZ/Virtuozzo instance, and malloc will fail much earlier, because VZ limits allocated memory and not dirty memory. In result a Xen s

Now run the same code on a VZ/Virtuozzo instance, and malloc will fail much earlier, because VZ limits allocated memory and not dirty memory. In result a Xen system with 128mb RAM can run much more than a VZ with 512MB.