Outdated scheduler documentation (costs are no longer used)

[Alvaro Lopez]

On Chapter 12 there is a section about "weights and costs", but costs are no longer used in the scheduler.

[Tom Fifield (fifieldt)]

Hi Laura,

Are you still working on this one?

[Ladquin (ladquin)]

Yes, Tom, sorry for stalling this.

My understanding is the current Scheduler code in nova has been simplified, so this section should be removed, but I think I could replace this for some Weights information, like in http://docs.openstack.org/developer/nova/devref/filter_scheduler.html
though I don't think the image will be consistent.

Let me know your thoughts, thanks!

[Anne Gentle (annegentle)]

I think there's a few patches that affected this and possibly it's related to cells?

See this for starters:

https://review.openstack.org/#/c/16221/

[Tom Fifield (fifieldt)]

HI, just noting the cells stuff is a red herring - effectively the old cells didn't have much in the way of proper scheduling (it has its own) and that patch just adds some stuff in.

[Simon Pasquier (simon-pasquier)]

Laura, any progress on this bug?

[Ladquin (ladquin)]

Simon, yes, sorry! I'm proposing a new patch.

https://review.openstack.org/#/c/16221/, I believe, needs to be added in the Cells chapter, which should be maybe in a separate patch (btw, is there a bug for it?). Thanks for pointing it!

This commit actually helped me understand where did all go: https://review.openstack.org/#/c/2606

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/30970
Committed: http://github.com/openstack/openstack-manuals/commit/faee88b2afd66a76d735b6ea7d189391fa1f8879
Submitter: Jenkins
Branch: master

commit faee88b2afd66a76d735b6ea7d189391fa1f8879
Author: ladquin <email address hidden>
Date: Fri Jul 5 02:22:18 2013 -0300

    Remove Costs from the 'Weights and Costs' Chapter

    Costs are no longer used in the scheduler, so Weights chapter is
    updated with the remaining ram_weight_multiplier option.

    Fixes bug 1172264

    Change-Id: Ic8c57b2107c1e334acb1adfe3498d33fde7b435d

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/grizzly
Review: https://review.openstack.org/36852

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/36852
Committed: http://github.com/openstack/openstack-manuals/commit/ec9cb1cde695cad9edd5f0873331171b3d65b18e
Submitter: Jenkins
Branch: stable/grizzly

commit ec9cb1cde695cad9edd5f0873331171b3d65b18e
Author: ladquin <email address hidden>
Date: Wed Jul 17 00:48:38 2013 -0300

    Remove Costs from the 'Weights and Costs' Chapter

    Costs are no longer used in the scheduler, so Weights chapter is
    updated with the remaining ram_weight_multiplier option.

    Fixes bug 1172264

    Cherry-picked from https://review.openstack.org/#/c/30970

    Change-Id: Ic8c57b2107c1e334acb1adfe3498d33fde7b435d