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_pa...
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@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@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@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-pe...
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Fabrice Florin Product Manager Wikimedia Foundation