On Friday 26 August 2011 17:06:36 Ribhi Kamal wrote: > Assume that VirtualBox is running on a host (Windows/linux) without any > support for hardware virtualization (think netbooks). > > Is there anything I can do from a linux guest to improve performance? In > other words, does it matter how the guest linux kernel was compiled? If so, > what options can I enable/disable/adjust to improve performance?
Yes. Compile the kernel as non-SMP kernel and switch off as many options which are responsible for code patching as possible. Enabling SMP support is one option which uses code patching on recent Linux kernels (to improve performance on non-SMP systems). Code patching of the guest kernel always induces additional virtualization overhead. Kind regards, Frank -- Dr.-Ing. Frank Mehnert Senior Manager Software Development Desktop Virtualization, VirtualBox ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | 71384 Weinstadt, Germany Hauptverwaltung: Riesstr. 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Komplementärin: ORACLE Deutschland Verwaltung B.V. Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister der Handelskammer Midden-Niederlande, Nr. 30143697 Geschäftsführer: Jürgen Kunz, Marcel van de Molen, Alexander van der Ven
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