On 25/10/18 1:38 PM, William M Edmonds wrote:
Zane Bitter <zbit...@redhat.com> wrote on 10/22/2018 03:12:46 PM:
> On 22/10/18 10:33 AM, Thomas Goirand wrote:
> > On 10/19/18 5:17 PM, Zane Bitter wrote:
<snip>
> >> Integration Tests
> >> -----------------
> >>
> >> Integration tests do test, amongst other things, integration with
> >> non-openstack-supplied things in the distro, so it's important that we
> >> test on the actual distros we have identified as popular.[2] It's also
> >> important that every project be testing on the same distro at the
end of
> >> a release, so we can be sure they all work together for users.
> >
> > I find very disturbing to see the project only leaning toward these
only
> > 2 distributions. Why not SuSE & Debian?
>
> The bottom line is it's because targeting those two catches 88% of our
> users. (For once I did not make this statistic up.)
>
> Also note that in practice I believe almost everything is actually
> tested on Ubuntu LTS, and only TripleO is testing on CentOS. It's
> difficult to imagine how to slot another distro into the mix without
> doubling up on jobs.
I think you meant 78%, assuming you were looking at the latest User
Survey results [1], page 55. Still a hefty number.
I never know how to read those weird 3-way bar charts they have in the
user survey, but that actually adds up to 91% by the looks of it (I
believe you forgot to count RHEL). The numbers were actually slightly
lower in the full-year data for 2017 that I used (from
https://www.openstack.org/analytics - I can't give you a direct link
because Javascript <sigh>).
It is important to note that the User Survey lumps all versions of a
given OS together, whereas the TC reference [2] only considers the
latest LTS/stable version. If the User Survey split out latests
LTS/stable versions vs. others (e.g. Ubuntu 16.04 LTS), I expect we'd
see Ubuntu 18.04 LTS + Centos 7 adding up to much less than 78%.
This is true, although we don't know by how much. (FWIW I can almost
guarantee that virtually all of the CentOS/RHEL users are on 7, but I'm
sure the same is not the case for Ubuntu 16.04.)
[1] https://www.openstack.org/assets/survey/April2017SurveyReport.pdf
[2]
https://governance.openstack.org/tc/reference/project-testing-interface.html#linux-distributions
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