(Sorry Boris, now with correct CC list.)
Boris Pavlovic <bo...@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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