Reading/Multimedia/Metrics/Estimations

Analysis done on May 7th 2014, to be continued.

= API requests =

Everything looked fine on Friday, however there was an increase of total requests over the weekend. Unfortunately the per-API graphs are currently down, preventing us from verifying the influence of Media Viewer's API call in that weekend increase.

= Image Scalers =

A small increase seems to be seen after the French+Dutch pilot launch, but more time is needed to be certain that it's not something unrelated, as it's not a very well-defined jump and it doesn't exactly coincide with the launch.

Older data suggests that Media Viewer's impact can be seen, as Media Viewer's peak of thumbnail misses was between April 18th and April 21st, at what point the Image Scalers graph is actually lower than usual.

= Swift =

Swift also sees a slight increase over that period, but in previous weeks there were much higher peaks. However it seems like there is a strong correlation here between the peaks and the times when the Image Viewer thumbnail Varnish misses where at their highest. The good news is that the amount of misses has since then stabilized and seem unaffected by the most recent pilot launch.

My theory is that a lot of content comes from Commons and the best Commons content is likely to be used on several language wikis. Thus, but the time we get to bigger wikis, the smaller wikis have already taken care of the thumbnail generation for the majority of the best Commons content. I think that the gradual rollout is working in our favor.

= Upload Varnish =

There's a peak over the last few days, but the previous week saw peaks that were was just as high. And those don't correlate with the amount of thumbnail misses seen in Media Viewer.