Thank you very much for sharing this data, Tyler (and to the team that
researched and analysed it, as well). I think it shows that the train has
been pretty successful in mitigating the issues it was intended to
improve.
I note the data points that show there has been a significant and clear
trend toward fewer comments per patch. This would be worth investigating
further. Iis the total number of reviews pretty consistent, or is it
increasing or decreasing? Is it possible that developers have become more
proficient at writing patches to standard, and thus fewer comments are
required? Or could it be that, because more time is invested in writing
patches (assuming that more patches = more time writing them), there is
less time for review?
I've always found the train to be very interesting, and in fact mentioned
it when being interviewed for a recently published article (in a positive
way). I'm pleased and perhaps a bit relieved to see that the research has
borne out my impression of how it has made such a big difference in the
deployment process.
Risker/Anne
On Wed, 16 Feb 2022 at 06:01, Tyler Cipriani <tcipriani(a)wikimedia.org>
wrote:
*tl;dr:* We have open data on Wikimedia production
deployments. Read Diving
into Deployment Data
<https://phabricator.wikimedia.org/phame/post/view/272/diving_into_our_deployment_data/>
to
learn more (or read on, I guess).
_____
If you’ve ever experienced the pride of seeing your name on MediaWiki's
contributor list, you've been involved in our deployment process.
This realization inspires questions – *we have *📈 *data to answer those
questions!*
- We wrote a blog (Research folks did the hard parts): ⚙️Phabricator:
Diving Into Our Deployment Data
<https://phabricator.wikimedia.org/phame/post/view/272/diving_into_our_deployment_data/>
- The data is open: 🦊 GitLab train-stats
<https://gitlab.wikimedia.org/thcipriani/train-stats>
- Play with the live data (if you'd rather dive into SQL): 💾
data.releng.team <https://data.releng.team/train>
Thanks!
Tyler Cipriani (he/him/his)
Engineering Manager, Release Engineering
Wikimedia Foundation
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