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Old 07-29-2008, 06:54 PM
"John J. Culkin"
 
Default Xen bigmem SMP

What kernel would I use if I wanted to use Xen on a server with more
then 4GB of ram and 2 processors?


Can the Xen kernel handle this?

-- John C.

--
John J. Culkin Systems Administrator
John.Culkin@Scranton.edu The University of Scranton
Phone: (570) 941-7665

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Old 07-29-2008, 09:16 PM
"Jose R R"
 
Default Xen bigmem SMP

On Tue, Jul 29, 2008 at 11:54 AM, John J. Culkin <culkinj3@scranton.edu>wrote:

> What kernel would I use if I wanted to use Xen on a server with more then
> 4GB of ram and 2 processors?
>
> Can the Xen kernel handle this?
>

Yes, it can.

Prior to 64-bit release of Xen hypervisor (that is, before the summer of
2007), the 32bit-PAE version of Xen allowed the use of up to 16GB of memory.

You can leverage up to 128GB of memory with a current 64-bit Xen modified
GNU/Linux kernel.

Hope the info is useful.

Jose R Rodriguez
http://www.metztli-it.com
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Old 07-29-2008, 09:27 PM
"John J. Culkin"
 
Default Xen bigmem SMP

Thanks for the response

Just to be sure the RHEL Xen kernel (ex: 2.6.18-92.1.6.el5xen #1 SMP Fri
Jun 20 03:05:59 EDT 2008 i686 i686 i386 GNU/Linux) can handle over *4GB
of RAM *


*AND*

*over 2 processors?*

-- John C.

Jose R R wrote:

On Tue, Jul 29, 2008 at 11:54 AM, John J. Culkin <culkinj3@scranton.edu>wrote:



What kernel would I use if I wanted to use Xen on a server with more then
4GB of ram and 2 processors?

Can the Xen kernel handle this?




Yes, it can.

Prior to 64-bit release of Xen hypervisor (that is, before the summer of
2007), the 32bit-PAE version of Xen allowed the use of up to 16GB of memory.

You can leverage up to 128GB of memory with a current 64-bit Xen modified
GNU/Linux kernel.

Hope the info is useful.

Jose R Rodriguez
http://www.metztli-it.com



--
John J. Culkin Systems Administrator
John.Culkin@Scranton.edu The University of Scranton
Phone: (570) 941-7665

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Old 07-29-2008, 10:40 PM
"Jose R R"
 
Default Xen bigmem SMP

On Tue, Jul 29, 2008 at 2:27 PM, John J. Culkin <culkinj3@scranton.edu>wrote:

> Thanks for the response
>
> Just to be sure the RHEL Xen kernel (ex: 2.6.18-92.1.6.el5xen #1 SMP Fri
> Jun 20 03:05:59 EDT 2008 i686 i686 i386 GNU/Linux) can handle over *4GB of
> RAM *
>
> *AND*
>
> *over 2 processors?*
>
> Naturally! I believe that there is a limit of 32 physical CPU sockets with
up to 32 CPU cores.

Jose R Rodriguez
http://www.metztli-it.com
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