Thank you, Gilles!
This is a really, really helpful, particularly the overall network performance data broken
by percentiles.
If I understand this correctly, it looks like we’re well within our goals for images shown
in Media Viewer:
http://multimedia-metrics.wmflabs.org/graphs/mmv_performance_image_global
This global graph suggests that most images load within a second up to the 50th
percentile, and only in the 90th percentile do we start seeing 5-second load times, which
seems acceptable. Should we be adding API loads or any other data to that number, to get
the complete load times?
I’m also impressed by the comparison of the time it takes to open an image with Media
Viewer and on the File: page:
http://multimedia-metrics.wmflabs.org/dashboards/mmv#media_viewer_vs_file_p…
Could you share your views on why the File page mean (~3 seconds) appears to take longer
than the Media Viewer load (~2.6) on a cold cache? I would have expected the reverse to be
true, since Media Viewer is loading larger images files, plus the thumbnails.
And I love that you broke down the dashboards for different sites, which will make it a
lot easier for our community champions to track the data for each project.
Nicely done, my friend — we all send you a big round of virtual applause for this
important breakthrough :)
All the best,
Fabrice
On Apr 22, 2014, at 5:08 PM, Alolita Sharma <asharma(a)wikimedia.org> wrote:
Gilles,
This is pretty awesome. Thanks for sharing :-)
Best,
Alolita
Alolita Sharma
आलोलिता शर्मा
Director of Engineering
Internationalization & Localization
Wikimedia Foundation
On Tue, Apr 22, 2014 at 5:02 PM, Toby Negrin <tnegrin(a)wikimedia.org> wrote:
This looks really good -- nice presentation of the graphs. And that really is a horrid
SQL trick!
-Toby
On Tue, Apr 22, 2014 at 4:48 PM, Gilles Dubuc <gilles(a)wikimedia.org> wrote:
I've split up the Media Viewer limn dashboard into a global one and one dashboard per
pilot site. We'll shortly be adding more pilot site dashboards. For an up-to-date list
of Media Viewer's limn dashboards, visit
https://www.mediawiki.org/wiki/Multimedia/Metrics
Also in this update were new actions (no data yet since the change to record those
actions just hit master) and key percentiles, following Nuria's recommendation, which
I was able to generate with MariaDB thanks to a horrid trick described here:
http://web.performancerasta.com/metrics-tips-calculating-95th-99th-or-any-p…
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