The CI build time continue to rise alarmingly

[Torsten Baumann]

Hi David,

Thanks for raising the inefficiency.

>From what I understand there was a change introduced in and around June 1st
for https://bugs.launchpad.net/juju-core/+bug/1573294 that may have
increased the time again. :-( As regrettable as this is we did review this
with the tech board and it was accepted as part of the fix.


I discussed with a few people and there is some time we can shave off on
the tarball assembly (2-4 minutes) if we spent a few days work there.

I also believe we can save time if we ran the tests in LXC containers but
there may be some reliability issues there. we can always switch the jobs
to use lxc and see what happens?

Other than that I am open to seeing who else on this list has ideas as to
what we can do to reduce the time? I would rather we go after the most
important ones first if we can identify them.

thanks everyone,

Torsten



---------- Forwarded message ----------
From: David Cheney <david.cheney at canonical.com>
Date: Thu, Jun 2, 2016 at 9:49 PM
Subject: The CI build time continue to rise alarmingly
To: "juju-dev at lists.ubuntu.com" <Juju-dev at lists.ubuntu.com>


CI build times are now an average of 36 minutes. That means in a
typical 8 hour work day, assuming doing nothing other than landing
branches, less than 16 commits can be landed.

While bugs can be worked on and reviewed in parallel, landing is a
sequential action that blocks everyone, and given the landing bot is
batting less than 0.500, this limits the practical number of changes
that can be landed in a day, a sprint, a iteration, or a development
cycle.

I cannot make it any clearer than this, the speed of CI limits the
velocity of this team.

Dave

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