openSuSE 11.0 (with a Xen kernel) boots multi-cpu and shows 32 CPUs, and
Xen will give 8 (the max number of /sockets/ Win2k3ServerEnt. supports)
CPUs to the VM. So I need to know how to get Xen to, say, give 2 VCPUs
/per socket/ to the VM.
> ------------------------------
>
> Message: 3
> Date: Thu, 29 Jan 2009 11:38:33 -0500
> From: tmac <tmacmd@gmail.com>
> Subject: Re: [Xen-users] Re: Windows and Multiple CPUS?
> To: PattiMichelle <miche1@earthlink.net>
> Cc: xen-users@lists.xensource.com
> Message-ID:
> <73699aa30901290838r5d3e3f6apab23e02694ed3ef9@mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Have you tried looking in the BIOS?
>
> I have noticed that many boards have the "multi-core feature"
disabled
> by default.
>
> Probably worth a reboot/check?
>
> --tmac
>
> RedHat Certified Engineer #804006984323821 (RHEL4)
> RedHat Certified Engineer #805007643429572 (RHEL5)
>
> Principal Consultant
>
>
>
>
> On Thu, Jan 29, 2009 at 10:34 AM, PattiMichelle
<miche1@earthlink.net> wrote:
>
>> OK, I bought the paperback book "Running Xen" and the only
reference to this
>> issue I could find was hotplugging CPUs, which won''t work for
me since
>> Win2K3Server supports 8 sockets and I''m seeing now 8 CPUs
(obviously
>> 8 single-CPU processors). I need to set more CPUs per socket (I have
>> 8 quad-cores). I also searched for the example file:
>>
>> /etc/xen/ xmexample.hvm-stubdom
>>
>> but it was not in my root directory tree. The example *almost*
>> looks like a binary format but seems obscure. How would one set,
>> say 4 CPUs per socket for all CPUs?
>>
>> Thank You Very Much,
>> Patti :^)
>>
>>
================================================================>>
================================================================>>
>> To: "Andrew Lyon"
<andrew.lyon@xxxxxxxxx>,<Dustin.Henning@xxxxxxxxxxx>
>> Subject: RE: [Xen-users] Re: Windows and Multiple CPUS?
>> From: "Robert Dunkley" <Robert@xxxxxxxxx>
>> Date: Mon, 29 Sep 2008 15:02:13 +0100
>> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
>> Delivery-date: Mon, 29 Sep 2008 07:04:48 -0700
>> Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
>> List-help:
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>> References:
>>
<f4527be0809190639p55c70370yb809739422db36ed@xxxxxxxxxxxxxx><f4527be0809190646p1cfd103dj60e15abdeb4c57df@xxxxxxxxxxxxxx><f4527be0809280644w29ad82b0wa9496b27cb382d87@xxxxxxxxxxxxxx><5872164101243113643@unknownmsgid>
>> <f4527be0809290650jbbed5e7ie74fc00d24ecaf09@xxxxxxxxxxxxxx>
>> Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
>> Thread-index: AckiOj7K4pP/4wY5TjC446yZxU9N4wAAUFqA
>> Thread-topic: [Xen-users] Re: Windows and Multiple CPUS?
>>
>> Hi Andrew,
>>
>> Very interesting.
>>
>> The trouble is that I don''t understand the examples. Can
anyone advise
>> on how to make 2,3 and 4 AMD cpu assigned VMs appear as a single
>> multicore CPU? I''m interested in how doing this may affect
software
>> optimizations and NUMA type detection within HVMs.
>>
>> Thanks,
>>
>> Rob
>>
>> -----Original Message-----
>> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
>> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Andrew Lyon
>> Sent: 29 September 2008 14:51
>> To: Dustin.Henning@xxxxxxxxxxx
>> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
>> Subject: Re: [Xen-users] Re: Windows and Multiple CPUS?
>>
>> You need Xen 3.3, examples are shown in /etc/xen/
xmexample.hvm-stubdom:
>>
>> # Expose to the guest multi-core cpu instead of multiple processors
>> # Example for intel, expose a 8-core processor :
>> #cpuid=[''1:edx=xxx1xxxxxxxxxxxxxxxxxxxxxxxxxxxx,
>> # ebx=xxxxxxxx00010000xxxxxxxxxxxxxxxx'',
>> # ''4,0:eax=001111xxxxxxxxxxxxxxxxxxxxxxxxxx'']
>> # - CPUID.1[EDX][HT] : Enable HT
>> # - CPUID.1[EBX] : Number of vcpus * 2
>> # - CPUID.4,0[EAX] : Number of vcpus * 2 - 1
>> #vcpus=8
>>
>>
>>
>> I used a single line to set the cpuid:
>>
>>
cpuid=[''1:edx=xxx1xxxxxxxxxxxxxxxxxxxxxxxxxxxx,ebx=xxxxxxxx00010000xxxxx
>>
xxxxxxxxxxx'',''4,0:eax=001111xxxxxxxxxxxxxxxxxxxxxxxxxx'']
>> vcpus=8
>>
>> Andy
>>
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