[openstack-dev] [nova] schedule instance based on CPU frequency ?

Sylvain Bauza sbauza at redhat.com
Fri Jul 3 13:37:31 UTC 2015

Le 03/07/2015 15:25, Jay Pipes a écrit :
> On 07/03/2015 06:32 AM, Sylvain Bauza wrote:
>> Le 02/07/2015 21:40, Jay Pipes a écrit :
>>> On 07/01/2015 12:23 AM, ChangBo Guo wrote:
>>>> thanks Dan and Jay,  we don't need add new scheduler for that  :-),
>>>> what about provide cpu frequency to  api  /os-hypervisors, that  means
>>>> we can
>>>> report this value automatically,  the value can be used in high level
>>>> mange tools.
>>> Meh, I'm not too big of a fan of the os-hypervisors extension.
>>> Actually, one might say I despise that extension :)
>>> That said, I suppose it should be possible to include the output of
>>> the CPU frequency in the cpu_info field there...
>> Well, IMHO I don't like to have the Hypervisors API to be a Nagios-like
>> view of the hypervisors world and I don't really much benefits of pusing
>> the metrics up to the API.
>> On the other hand, those monitor metrics are already sent as
>> notifications on the bus [1] so a 3rd party tool can easily fetch them
>> without necessarly needing to extend the API.
> Yeah, the difference here is that CPU frequency really isn't a 
> metric... it's a static thing that doesn't change over time. Which is 
> why I think it's OK to put it in cpu_info.

Oh, you're right, it's a very static thing. If it's not a metric, then I 
would like to see it removed from the CPU monitor and provided in 
cpu_info then.


> Best,
> -jay
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