[users at bb.net] Nine performance worse than 0.8.14

[Pierre Tardy]

Hi Elliot,
Actually, after more investigation, the slowness of nine.bb.net I got was
just due to latencies between EU(where I am) and US (where buildbot.net
infra is)

I looked at your trace, I can only see one place with 100%cpu for a while,
and that is while fetching the list of builders.
How many builders do you have?

Pierre

Le sam. 14 janv. 2017 à 10:30, Pierre Tardy <tardyp at gmail.com> a écrit :

> Hi Elliot,
>
> I was looking at such slowdowns yesterday on nine.buildbot.net
> For example https://nine.buildbot.net/#/builders/2/builds/87278 take
> 300-600ms per http request. Which makes the full page load to 20s !
>
> I am not sure yet what is the reason, as when I built nine.bb.net in the
> first time, things were much much smoother.
> The DB now has 90k+ builds so this might be sqlite not scaling. I need to
> do more tests.
>
> An easy way to speed up the UI is to enable http2
> https://github.com/buildbot/buildbot-infra/pull/167/files
>
> You can also run https://github.com/tardyp/buildbot_profiler and tell us
> what you get.
>
> Regards,
> Pierre
>
> Le sam. 14 janv. 2017 à 09:31, Elliot Saba <staticfloat at gmail.com> a
> écrit :
>
> I have noticed that the web interface in Nine has significantly worse
> performance than in 0.8.14.  By significantly worse performance, I mean
> that when there are multiple builds going on, the web interface takes many
> seconds to load, and often times out so that I have to reload my browser a
> few times to get all the elements to load.  Sometimes I will open the
> "builders" page, and only a subset of all the builder rows will populate
> the lists because some of the requests will timeout.
>
> Could this be because of a misconfiguration, or is this simply part of the
> transition over to the new codebase?  I don't really know where to begin
> testing in order to narrow down what is causing the slowdowns.
>
> Thanks,
> -E
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