Re: [Xen-users] XCP - Maximum CPU cores

[Todd Deshane <todd.deshane@xxxxxxx>]

On Tue, Mar 8, 2011 at 2:46 PM, AP Xen <apxeng@xxxxxxxxx> wrote:
> Technically, it is possible as XCP is open source. You would have to
> download the source ISO and rebuild Xen with nr_phys_cpus=128. Trying to
> replace Xen in XCP with the Xen 4.x might be more difficult.
>

True it is open source and should be possible. You're going to want to
make sure you use at least the 4.1 branch as it has better libxl
integration.

Do report any problems that you find to xen-devel. I think the
intention is that this should work, I'm just not sure how much
community testing we have gotten to this point. Do let us know if/when
you test it and how you progress.

Thanks,
Todd


>
>
> From: Outback Dingo [mailto:outbackdingo@xxxxxxxxx]
> Sent: Tuesday, March 08, 2011 11:08 AM
> To: Todd Deshane
> Cc: AP Xen; Tapas Mishra; xen-users; Boris Quiroz
>
> Subject: Re: [Xen-users] XCP - Maximum CPU cores
>
>
>
> well, i need 128 cores now on XCP :( so im hardware heavy and cant utilize
> 3/4 my cores on 2 systems, so how can one compensates for this
>
> is it possible to use xen 4.x on XCP 1.0 ?
>
> On Tue, Mar 8, 2011 at 1:42 PM, Todd Deshane <todd.deshane@xxxxxxx> wrote:
>
> On Tue, Mar 8, 2011 at 6:32 PM, AP Xen <apxeng@xxxxxxxxx> wrote:
>> It is called max_phys_cpus=<nr>
>>
>> http://xenbits.xensource.com/xen-unstable.hg/rev/d7cbcf5d7cd6
>>
>>
>>
>> BTW, the default is 128 for Xen 4.x
>>
>
> Just FYI, the plan will be to move to Xen 4.1+ starting with XCP 1.1
>
> We do also plan to track xen-unstable with an XCP unstable version as
> well. More to come on this.
>
> Thanks,
> Todd
>
>>
>>
>> Thanks,
>>
>> AP
>>
>>
>>
>> From: Tapas Mishra [mailto:mightydreams@xxxxxxxxx]
>> Sent: Tuesday, March 08, 2011 10:03 AM
>> To: xen-users
>> Cc: AP Xen; Boris Quiroz; Outback Dingo
>>
>> Subject: Re: [Xen-users] XCP - Maximum CPU cores
>>
>>
>>
>> Hi please elaborate as how the compilation method of hypervisor can
>> enhance
>> the number of CPU's to be pinned.
>>
>>
>>
>> On Tue, Mar 8, 2011 at 11:24 PM, AP Xen <apxeng@xxxxxxxxx> wrote:
>>
>> The default is 32, however you can up the limit to 64 with a compile time
>> option. So, It depends on how the hypervisor was compiled.
>>
>> Thanks,
>> AP
>>
>>> -----Original Message-----
>>> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
>>> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Boris Quiroz
>>> Sent: Tuesday, March 08, 2011 6:04 AM
>>> To: Outback Dingo
>>> Cc: xen-users
>>> Subject: Re: [Xen-users] XCP - Maximum CPU cores
>>>
>>> 2011/3/8 Outback Dingo <outbackdingo@xxxxxxxxx>:
>>> > Whats the maximum cpu cores XCP will see ?
>>> > _______________________________________________
>>> > Xen-users mailing list
>>> > Xen-users@xxxxxxxxxxxxxxxxxxx
>>> > http://lists.xensource.com/xen-users
>>> >
>>>
>>> Somewhere I read they were 32 cores maximum. I'm checking..
>>>
>>> Cheers.
>>>
>>> --
>>> @cereal_bars
>>>
>>> _______________________________________________
>>> Xen-users mailing list
>>> Xen-users@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-users
>>
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-users
>>
>>
>> --
>> http://mightydreams.blogspot.com
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-users
>>
>
>
> --
> Todd Deshane
> http://www.linkedin.com/in/deshantm
> http://www.xen.org/products/cloudxen.html
>
>



-- 
Todd Deshane
http://www.linkedin.com/in/deshantm
http://www.xen.org/products/cloudxen.html

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