On Mon, 17 Aug 2009 08:07:53 -0300, "Antonio Augusto (Mancha)" <mkha...@gmail.com> wrote:
> Obviously, the two VMs didn't use 4GB of RAM + 4GB of swap, since you > have your host running. So, some of this memory is used by the host. > Also, notice that, as all virtualization software there is an > overhead. So, if the guest is set to 2Gb it might endup using 2,2Gb or > even 2,5Gb (FWIK, the more memory you set the greater the overhead > is). That's just it - nothing was reading as using that much memory, the total used by the host was about 250MB, caches got squeezed down to maybe 10MB. Each VM was showing usage of about 2.3GB. Halting the guests, disabling nested paging and re-specing the VMs down to 1GB each made the problem go away, and there was no phantom doubling of memory usage any more. I'll try to re-create the situation tonight and see if I can pin down any one specific thing that the behaviour can be attributed to. > Also, as someone else pointed out: what host are you running? What is > the mem usage of the host before launching any VM? Linux. Memory usage on the host wasn't really significant compared to the 2GB guest allocation (200-300MB). Gordan _______________________________________________ vbox-users mailing list vbox-users@virtualbox.org http://vbox.innotek.de/mailman/listinfo/vbox-users
