On 12 May 2014 11:27, dan-nl <[email protected]> wrote:
> first, i suggest that we put off all large image uploads, > 10mb ( unless we 
> have a concrete value that would work ), until we resolve the thumbnail issue.
>
> during the zürich hackathon i spoke with aaron schultz, faiden liambotis, and 
> brion vibber regarding approaches to dealing with this issue. in summary, the 
> idea aaron came up with is to create initial thumbnails on download of the 
> original mediafile to the wiki. this should block the appearance of the title 
> on the new files page and anywhere else until the thumbnails and title 
> creation/edit have completed. aaron thought, and faidon and i agree, that 
> further throttling of gwtoolset will not help resolve the issue.
>
> i am currently looking into implementing this approach.
>
> with kind regards,
> dan

If you can set up an illustrative example (maybe doing it "by hand")
so we can see how the file history and so forth would look, then it
might be easier to discuss on-wiki. In the case of the Library of
Congress, their database has "webpage quality" jpgs available as well
as larger jpgs and tiffs. It might be possible to pass the GWT an xml
file with a link to a thumbnail image as well as the tiff rather than
relying on automated generation somewhere else. The tricky part (I
think) would be doing this for a mass tiff upload, which is actually
the only example we have of stressing the WMF servers, as the initial
file would have to be formatted as a tiff rather than a jpeg.

I agree, from what we have seen, this is not a simple throttling
issue. I suspect even 1 file every 5 minutes could cause an issue if
there is a backlog of thumbnail creation at peak times.

Let me know if you would like my last NYPL maps xml file to play
around with as an example (it can be emailed as it is only 750k).
These have yet to be uploaded are were the cause of the most recent
problem.

Fae
-- 
[email protected] https://commons.wikimedia.org/wiki/User:Fae

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