Open Stack

Ian Wienand <iwienand at redhat.com> writes:

> On 06/19/2014 01:18 AM, James E. Blair wrote:
>> (This requires tracking a bit more state across allocation runs).
>
> This seems to be the crux of the matter; once we have some state all
> sorts of things become possible.
>
> I've made a proposal in which seems like the most simple place to
> start; track if a label requested an allocation last time but didn't
> get any, and give them preference the next time around.
>
> This should ensure minimal forward progress?
>
> It could easily be expanded to track the last N times and round-robbin
> more fairly, or be expanded to percentage based, or a PID algorithm as
> suggested by clarkb, etc etc.  But I just wanted to start with the
> most simple thing I could think of.
>
> If the general idea is OK, I can work on it some more.  Particularly
> interested in where people are thinking the state should be stored.
>
> Thanks,
>
> -i
>
> [1] https://review.openstack.org/#/c/101110/

Thanks, I've left further comments in the review.

-Jim