[Twisted-Python] Waiting time for tests running on Travis CI and Buildbot

[Jean-Paul Calderone]

On Mon, Aug 15, 2016 at 7:03 PM, Glyph Lefkowitz <glyph at twistedmatrix.com>
wrote:

>
> On Aug 15, 2016, at 2:11 PM, Jean-Paul Calderone <
> exarkun at twistedmatrix.com> wrote:
>
> On Mon, Aug 15, 2016 at 4:38 PM, Glyph Lefkowitz <glyph at twistedmatrix.com>
> wrote:
>
> There's a lot that we can do to make Travis almost that fast, with
> pre-built Docker images and cached dependencies.  We haven't done much in
> the way of aggressive optimization yet.  As recently discussed we're still
> doing twice as many builds as we need to just because we've misconfigured
> branch / push builds :).
>
>
> Hm... pre-built dockers also takes effort to keep them updated... and
> then we will have a KVM VM starting inside a docker in which we run
> the tests...
>
> ...and we would not be able to test the inotify part.
>
>
> Not true:
>>
>>
>>    1. We can have one non-containerized builder (sudo: true) for testing
>>    inotify; no need for KVM-in-Docker (also you can't do that without a
>>    privileged container, so, good thing)
>>
>> I'm curious about the details of how such a configuration would work.
> Since there is only one travis configuration per repository (well, per
> branch, technically, don't think that makes a difference here) and the sudo
> configuration is global (isn't it?), I always though either a project had
> to pick sudo or not sudo and you couldn't have a mix of builds with each.
>
>
> I had just assumed that it would be per-matrix-entry, and while it looks
> like I'm correct, it's much less obvious than I had thought.  If you look
> at the second example code block under this heading:
>
> https://docs.travis-ci.com/user/multi-os/#Example-Multi-OS-Build-Matrix
>
> you'll see that one of the matrix/include entries has a 'sudo: required'
> tag, which means "non-container-based" please.  Presumably you can mix
> those.
>

Ah, neat.  I hope that works (and wish I'd noticed that example a couple
months ago).

Jean-Paul


>
> The docs on "migrating to the container-based infrastructure" do make it
> sound like this is impossible though, and this isn't nearly as clear as I'd
> like, so it would be nice to actually experiment and see what happens...
>
> (Wonky quoting thanks to gmail's wonky web interface, sorry)
>
>
> It wasn't too bad - certainly well-worth suffering through for your
> contribution :).
>
> -glyph
>
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