On Thu, Mar 11, 2010 at 04:08:38PM +0000, Martin Lukasik wrote:
> Hello,
>
> Can somebody explain why the number of CPUs Xen can handle is limited to 32?
> I have a machine with 48 cores, and would love to virtualise it, but if
> I do it, I loose 16 CPUs, which isnt very good... :-(
> Where is this limit coming from? Or maybe it is possible to change it
> somewhere in the source files?
>
I think the number of virtual cpus (vcpus) per guest is (was) 32,
and now in Xen 4.0.0 you can have up to 64 vcpus per guest.
The max number of physical cpus is 128 or so..
-- Pasi
> Cheers,
> Martin
>
>
> This communication is from Cancer Research UK. Our website is at
> www.cancerresearchuk.org. We are a charity registered under number 1089464
> and a company limited by guarantee registered in England & Wales under number
> 4325234. Our registered address is 61 Lincoln's Inn Fields, London WC2A 3PX.
> Our central telephone number is 020 7242 0200.
>
> This communication and any attachments contain information which is
> confidential and may also be privileged. It is for the exclusive use of the
> intended recipient(s). If you are not the intended recipient(s) please note
> that any form of disclosure, distribution, copying or use of this
> communication or the information in it or in any attachments is strictly
> prohibited and may be unlawful. If you have received this communication in
> error, please notify the sender and delete the email and destroy any copies
> of it.
>
> E-mail communications cannot be guaranteed to be secure or error free, as
> information could be intercepted, corrupted, amended, lost, destroyed, arrive
> late or incomplete, or contain viruses. We do not accept liability for any
> such matters or their consequences. Anyone who communicates with us by
> e-mail is taken to accept the risks in doing so.
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
Home