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Re: [Xen-devel] Xen max supported memory per guest VM?

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Xen max supported memory per guest VM?
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Sat, 14 Aug 2010 22:46:10 +0100
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On 14/08/2010 22:30, "Pasi Kärkkäinen" <pasik@xxxxxx> wrote:

>>> In http://wiki.xensource.com/xenwiki/Xen4.0 we mention the following:
>>> "Better performance and scalability: 128 vcpus per guest, 1 TB of RAM per
>>> host, 128 physical CPUs per host (as a default, can be compile-time
>>> increased
>>> to lots more)."
>>> 
>>> But what's the max supported amount of memory for a (64bit) guest?
>> 
>> Allocating the whole 1TB should work. It's unlikely to have been tested
>> though.
>> 
> 
> Ok. I guess it might also have a difference if it's a PV or HVM guest..

I can't think of a reason we'd be limited to less for HVM or PV.

 -- Keir



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