[openstack-dev] [nova] Proposal: Move CPU and memory allocation ratio out of scheduler

Scott Devoid devoid at anl.gov
Tue Jun 3 16:09:35 UTC 2014


>
> It may be useful to have an API query which tells you all the numbers you
> may need - real hardware values, values after using the configured
> overcommit ratios and currently used values.
>

+1 to an exposed admin-API for host resource state and calculations,
especially if this allowed you to dynamically change the ratios.


On Tue, Jun 3, 2014 at 10:20 AM, Jesse Pretorius <jesse.pretorius at gmail.com>
wrote:

> On 3 June 2014 15:29, Jay Pipes <jaypipes at gmail.com> wrote:
>
>> Move CPU and RAM allocation ratio definition out of the Nova scheduler
>> and into the resource tracker. Remove the calculations for overcommit out
>> of the core_filter and ram_filter scheduler pieces.
>
>
> Makes sense to me.
>
> I especially like the idea of being able to have different allocation
> ratios for host aggregates.
>
> It may be useful to have an API query which tells you all the numbers you
> may need - real hardware values, values after using the configured
> overcommit ratios and currently used values.
>
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