To add more useful thumb widths to $wgUploadThumbnailRenderMap I generate a list of all thumb widths that are created because the thumb didn't exist yet.
Maybe it's useful to someone: MediaTransformOutput.php > hasFile()
public function hasFile() { // Generate statistics for most requested non-existing thumb widths // includes x1.5 and x2 global $wgUploadThumbnailRenderMap; if( $this->path != null // not when thumb size is >= original and original is returned && !$this->isError() // only if thumb is really created && !in_array( $this->width, $wgUploadThumbnailRenderMap ) // not if is in job list to be created ) { $file = '/path/to/thumbs_not_existing_on_request'; $current = file_get_contents($file); $current .= $this->width . "\n"; file_put_contents($file, $current); } // If TRANSFORM_LATER, $this->path will be false. // Note: a null path means "use the source file". return ( !$this->isError() && ( $this->path || $this->path === null ) ); }
After some hours / days grab the most requested thumb sizes:
sort /path/to/thumbs_not_existing_on_request | uniq -c | sort -rn | head -n 30
Example after some hours:
99 240 60 170 6 320 ...
>> Adding 240 and 170 to $wgUploadThumbnailRenderMap might be worth it.