[libvirt] Need help for thesis on Xen - disabling HAP for benchmarking purposes
Daniel P. Berrange
berrange at redhat.com
Wed Mar 25 19:44:34 UTC 2009
On Tue, Mar 24, 2009 at 09:10:24AM +0100, Alexander Sascha wrote:
> Hi,
>
> I'm a German student, writing my thesis on "Virtualization with Xen.
> Analysis and Comparision of Different Techniques such as
> Paravirtualization, Full Virtualization, and Utilization of Hardware
> Support Provided by the Processor".
>
> I'd like to know how I can disable HAP/RVI/Nested Paging for
> benchmarking purposes. I read somewhere
> (http://markmail.org/message/bbnivuqx6vjz7jg4) that Xen developers
> decided to disable the global grub parameter introducing a per domain
> flag for HAP instead (hap=0/1).
There's no way to set this per domain in libvirt. IMHO it was crazy
to remove the global boot parameter for it :-(
On the other hand, XenD is all python code so trivially modified. So you
could easily edit the XenD python code to turn HAP on/off globally when
running your benchmarking tests.
Regards,
Daniel
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