Denny Vrandečić, 14/01/2014 19:50:
The overreporting patch leads to a significant difference, as discussed in the first two pages, starting end of 2013. I wonder for the curve before the divergence, why does the patch have no effect? I.e. why is there only a divergence since mid-2013?
The overreporting was caused by some /wiki/Special:* requests added by SUL2 https://www.mediawiki.org/wiki/SUL2 of which you can see the deployment timeline... nowhere, apparently, gotta dig https://wikitech.wikimedia.org/wiki/Deployments/Archive/2013
Nemo