Open Stack

Hi again,

I've went on and created a proper pull request to websockify [0], comment
there if you think we need it :)

I also realized that there is another option, which is to include
python-numpy to files/debs/ironic and files/debs/nova (strangely it is
already present in rpms/ for nova, noVNC and spice services).
This should install a pre-compiled version from distro repos, and should
also speed things up.

Any comments welcome.

[0] https://github.com/kanaka/websockify/pull/212

Best regards,

On Thu, Nov 26, 2015 at 1:44 PM Pavlo Shchelokovskyy <
pshchelokovskyy at mirantis.com> wrote:

> Hi all,
>
> I was long puzzled why devstack is installing numpy. Being a fantastic
> package itself, it has the drawback of taking about 4 minutes to compile
> its C extensions when installing on our gates (e.g. [0]). I finally took
> time to research and here is what I've found:
>
> it is used only by websockify package (installed by AFAIK ironic and nova
> only), and there it is used to speed up the HyBi protocol. Although the
> code itself has a path to work without numpy installed [1], the setup.py of
> websockify declares numpy as a hard dependency [2].
>
> My question is do we really need those speedups? Do we test any feature
> requiring fast HyBi support on gates? Not installing numpy would shave 4
> minutes off any gate job that is installing Nova or Ironic, which seems
> like a good deal to me.
>
> If we decide to save this time, I have prepared a pull request for
> websockify that moves numpy requirement to "extras" [3]. As a consequence
> numpy will not be installed by default as dependency, but still possible to
> install with e.g. "pip install websockify[fastHyBi]", and package builders
> can also specify numpy as hard dependency for websockify package in package
> specs.
>
> What do you think?
>
> [0]
> http://logs.openstack.org/82/236982/6/check/gate-tempest-dsvm-ironic-agent_ssh/1141960/logs/devstacklog.txt.gz#_2015-11-11_19_51_40_784
> [1]
> https://github.com/kanaka/websockify/blob/master/websockify/websocket.py#L143
> [2] https://github.com/kanaka/websockify/blob/master/setup.py#L37
> [3]
> https://github.com/pshchelo/websockify/commit/0b1655e73ea13b4fba9c6fb4122adb1435d5ce1a
>
> Best regards,
> --
> Dr. Pavlo Shchelokovskyy
> Senior Software Engineer
> Mirantis Inc
> www.mirantis.com
>
-- 
Dr. Pavlo Shchelokovskyy
Senior Software Engineer
Mirantis Inc
www.mirantis.com
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