Open Stack

(Sorry Boris, now with correct CC list.)

Boris Pavlovic <boris at pavlovic.me> wrote:

> Hi stackers,
>
> Intro
> -------
>
> It's not a big secret that OpenStack is huge and complicated ecosystem of  
> different
> services that are working together to implement OpenStack API.
>
> For example booting VM is going through many projects and services:  
> nova-api, nova-scheduler, nova-compute, glance-api, glance-registry,  
> keystone, cinder-api, neutron-api... and many others.
>
> The question is how to understand what part of the request takes the most  
> of the time and should be improved. It's especially interested to get  
> such data under the load.
>
> To make it simple, I wrote OSProfiler which is tiny library that should  
> be added to all OpenStack
> projects to create cross project/service tracer/profiler.
>
> Demo (trace of CLI command: nova boot) can be found here:  
> http://boris-42.github.io/ngk.html
>
> This library is very simple. For those who wants to know how it works and  
> how it's integrated with OpenStack take a look here:  
> https://github.com/openstack/osprofiler/blob/master/README.rst
>
> What is the current status?
> -----------------------------------
>
> Good news:
> - OSprofiler is mostly done
> - OSprofiler is integrated with Cinder, Glance, Trove & Ceilometer
>
> Bad news:
> - OSprofiler is not integrated in a lot of important projects: Keystone,  
> Nova, Neutron

Any idea what it would imply for e.g. Neutron to get it integrated? How  
huge is the expected piece of code?

> - OSprofiler can use only Ceilometer + oslo.messaging as a backend
> - OSprofiler stores part of arguments in api-paste.ini part in  
> project.conf which is terrible thing
> - There is no DSVM job that check that changes in OSprofiler don't break  
> the projects that are using it
> - It's hard to enable OSprofiler in DevStack
>
> Good news:
> I spend some time and made 4 specs that should address most of issues:
> https://github.com/openstack/osprofiler/tree/master/doc/specs
>
> Let's make it happen in Mitaka!
>
> Thoughts?
> By the way somebody would like to join this effort?)
>
> Best regards,
> Boris Pavlovic
>
>
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