Alexey Eremenko wrote: > The current version of VirtualBox (3.2.6) supports up to 16 GiB of RAM per VM. > > FreeBSD community man, HubTou wrote a patch to up the limit to 48 GiB of RAM. > http://forums.virtualbox.org/viewtopic.php?f=10&t=28215 > > I have tested it with 36 GiB of RAM on real hardware (RHEL5 Linux host). > > Host: Dual AMD Opteron Magny-cours (2x12) 24 core + 48 GB of RAM + > VBox 3.2.6 OSE with HubTou patches. > It was also tested on FreeBSD 8 host by HubTou. > > the following guest systems were able to boot and work: > -RHEL-5.4/32-bit (PAE) > -RHEL-5.4/64-bit > -Windows Server 2003/x64 > -Windows 7/x64 > -FreeBSD 8.0/64-bit (tested by HubTou) > > On Linux guests I have also put a load - ramdisk (via tmpfs). > Plus I have done the full "memtest86" test -- and it PASSED after 30 hours. > > After those tests I can recommend to evaluate the patch for inclusion > into VBox 3.3.x line. > Please evaluate the patch of 48 GiB RAM for guests. > > TODO: Test Guests: (for someone else) > -Mac OS X Server > -Solaris > -Windows Server 32-bit PAE > > TODO: Test Hosts: (for someone else, unless you provide me with remote > access into such a machine) > -Windows > -Mac > -Solaris > > TODO: Write: (for someone else) > -a similar patch for the Qt GUI. > > The patch is in the forum. > http://forums.virtualbox.org/viewtopic.php?f=10&t=28215 > > Forum also includes the VBox Log and my test results.
I explained on the forum why we have kept the limit at 16 GiB: http://forums.virtualbox.org/viewtopic.php?f=10&t=28215&start=15#p146689 Feel free to try track down and fix the performance issues, but drop me a hit first so we don't duplicate any work. :-) -- Kind regards / Mit freundlichen Gruessen / Vennlig hilsen, bird -- ORACLE Deutschland B.V. & Co. KG Knut St. Osmundsen Werkstrasse 24 Senior Staff Engineer, VirtualBox 71384 Weinstadt, Germany mailto:[email protected] Hauptverwaltung: Riesstr. 25, D-80992 Muenchen Registergericht: Amtsgericht Muenchen, HRA 95603 Komplementaerin: ORACLE Deutschland Verwaltung B.V. Rijnzathe 6, 3454PV De Meern, Niederlande Handelsregister der Handelskammer Midden-Niederlande, Nr. 30143697 Geschaeftsfuehrer: J. Kunz, M. van de Molen, A. van der Ven _______________________________________________ vbox-dev mailing list [email protected] http://vbox.innotek.de/mailman/listinfo/vbox-dev
