Last modified: 2014-07-21 11:21:52 UTC
I browsed a category using an obscure setting ( https://commons.wikimedia.org/wiki/Category:Uploaded_with_en.wp_upload_wizard?gallerymode=packed ) that made it show thumbnails in sizes not previously generated. About half way down I started to get: <html><head><title>Error generating thumbnail</title></head> <body> <h1>Error generating thumbnail</h1> <p> As an anti-spam measure, you are limited from performing this action too many times in a short space of time, and you have exceeded this limit. Please try again in a few minutes. </p> <!-- http://commons.wikimedia.org/w/thumb_handler.php/7/74/Tevfik_Cihan_Bulut.jpg/134px-Tevfik_Cihan_Bulut.jpg --> <!-- mw1156 --> -------------- I would expect the "anti-dos" measure to only kick in when doing something significantly more extreme than what could possibly happen during normal browsing.
That's set by [[mw:Manual:$wgRateLimits]]. WMF setting is 'renderfile' => array( // 1400 new thumbnails per minute 'ip' => array( 700, 30 ), 'user' => array( 700, 30 ), ), 'renderfile-nonstandard' => array( // 140 new thumbnails per minute 'ip' => array( 70, 30 ), 'user' => array( 70, 30 ), ), Given that categories show 200 images by default, maybe we should bump the nonstandard limit to 200/60?