Open Stack

Hi.

Quick update is 1000 nodes and 7 million reqs/sec :) - and the number of
requests should be higher but we had some internal issues. We have a
submission for barcelona to provide a lot more details.

But a couple questions came during the exercise:

1. Do we really need a volume in the VMs? On large clusters this is a
burden, and local storage only should be enough?

2. We observe a significant delay (~10min, which is half the total time to
deploy the cluster) on heat when it seems to be crunching the kube_minions
nested stacks. Once it's done, it still adds new stacks gradually, so it
doesn't look like it precomputed all the info in advance

Anyone tried to scale Heat to stacks this size? We end up with a stack with:
* 1000 nested stacks (depth 2)
* 22000 resources
* 47008 events

And already changed most of the timeout/retrial values for rpc to get this
working.

This delay is already visible in clusters of 512 nodes, but 40% of the time
in 1000 nodes seems like something we could improve. Any hints on Heat
configuration optimizations for large stacks very welcome.

Cheers,
  Ricardo

On Sun, Jun 19, 2016 at 10:59 PM, Brad Topol <btopol at us.ibm.com> wrote:

> Thanks Ricardo! This is very exciting progress!
>
> --Brad
>
>
> Brad Topol, Ph.D.
> IBM Distinguished Engineer
> OpenStack
> (919) 543-0646
> Internet: btopol at us.ibm.com
> Assistant: Kendra Witherspoon (919) 254-0680
>
> [image: Inactive hide details for Ton Ngo---06/17/2016 12:10:33
> PM---Thanks Ricardo for sharing the data, this is really encouraging! T]Ton
> Ngo---06/17/2016 12:10:33 PM---Thanks Ricardo for sharing the data, this is
> really encouraging! Ton,
>
> From: Ton Ngo/Watson/IBM at IBMUS
> To: "OpenStack Development Mailing List \(not for usage questions\)" <
> openstack-dev at lists.openstack.org>
> Date: 06/17/2016 12:10 PM
> Subject: Re: [openstack-dev] [magnum] 2 million requests / sec, 100s of
> nodes
>
> ------------------------------
>
>
>
> Thanks Ricardo for sharing the data, this is really encouraging!
> Ton,
>
> [image: Inactive hide details for Ricardo Rocha ---06/17/2016 08:16:15
> AM---Hi. Just thought the Magnum team would be happy to hear :)]Ricardo
> Rocha ---06/17/2016 08:16:15 AM---Hi. Just thought the Magnum team would be
> happy to hear :)
>
> From: Ricardo Rocha <rocha.porto at gmail.com>
> To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Date: 06/17/2016 08:16 AM
> Subject: [openstack-dev] [magnum] 2 million requests / sec, 100s of nodes
> ------------------------------
>
>
>
> Hi.
>
> Just thought the Magnum team would be happy to hear :)
>
> We had access to some hardware the last couple days, and tried some
> tests with Magnum and Kubernetes - following an original blog post
> from the kubernetes team.
>
> Got a 200 node kubernetes bay (800 cores) reaching 2 million requests /
> sec.
>
> Check here for some details:
>
> *https://openstack-in-production.blogspot.ch/2016/06/scaling-magnum-and-kubernetes-2-million.html*
> <https://openstack-in-production.blogspot.ch/2016/06/scaling-magnum-and-kubernetes-2-million.html>
>
> We'll try bigger in a couple weeks, also using the Rally work from
> Winnie, Ton and Spyros to see where it breaks. Already identified a
> couple issues, will add bugs or push patches for those. If you have
> ideas or suggestions for the next tests let us know.
>
> Magnum is looking pretty good!
>
> Cheers,
> Ricardo
>
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