Mailing List Archive

Yes

If you look at the VCPU_params(_live) field of the VM class you can
put a key "cpumap_$" ($ = vcpu num) with the value as a comma
seperated list of physical CPUs.

Cheers

Tom

On 12 Jul 2007, at 08:35, Saurabh Garg wrote:

> Hi,
>
> With the 3.1 Xen API(s), is it possible to set the vcpu to pcpu
> (physical cpu) mapping configuration.
>
> Thanks,
> Saurabh.
> _______________________________________________
> xen-api mailing list
> xen-api@lists.xensource.com
> http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-api

Thanks Tom,

Does it mean that it can be set only when the vm is running ? During creation time, it is possible to set cap and weight in the VCPU_params field, so if I set the cpumap values also, will this be effective ?

I guess if I'm not able to set it during the creation time, once the VM is created, I'll set it before starting the vm... will that work...

Thanks,
Saurabh.

Tom Wilkie wrote:

Yes
If you look at the VCPU_params(_live) field of the VM class you can put a key "cpumap_$" ($ = vcpu num) with the value as a comma seperated list of physical CPUs.
Cheers
Tom
On 12 Jul 2007, at 08:35, Saurabh Garg wrote:

Hi,

With the 3.1 Xen API(s), is it possible to set the vcpu to pcpu(physical cpu) mapping configuration.

Thanks,
Saurabh.
_______________________________________________ xen-api mailing list xen-api@lists.xensource.com http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-api"]http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-api

Yeah the idea is you write to VCPU_params when the VM is halted (or
at creation) and they take effect when booted. Any subsequent
changes to this (after booted) won't take effect until reboot, so we
have the VCPU_params_live field to dynamically change this (and
report it).

Cheers

Tom

On 12 Jul 2007, at 10:59, Saurabh Garg wrote:

> Thanks Tom,
>
> Does it mean that it can be set only when the vm is running ?
> During creation time, it is possible to set cap and weight in the
> VCPU_params field, so if I set the cpumap values also, will this be
> effective ?
>
> I guess if I'm not able to set it during the creation time, once
> the VM is created, I'll set it before starting the vm... will that
> work...
>
> Thanks,
> Saurabh.
>
> Tom Wilkie wrote:
>> Yes
>>
>> If you look at the VCPU_params(_live) field of the VM class you
>> can put a key "cpumap_$" ($ = vcpu num) with the value as a comma
>> seperated list of physical CPUs.
>>
>> Cheers
>>
>> Tom
>>
>> On 12 Jul 2007, at 08:35, Saurabh Garg wrote:
>>
>>> Hi,
>>>
>>> With the 3.1 Xen API(s), is it possible to set the vcpu to pcpu
>>> (physical cpu) mapping configuration.
>>>
>>> Thanks,
>>> Saurabh.
>>> _______________________________________________
>>> xen-api mailing list
>>> xen-api@lists.xensource.com
>>> http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-api
>>
>