In LocalisationCache.php,
// Disable APC caching Wikimedia\suppressWarnings(); $_apcEnabled = ini_set( 'apc.cache_by_default', '0' ); Wikimedia\restoreWarnings(); include $_fileName; Wikimedia\suppressWarnings(); ini_set( 'apc.cache_by_default', $_apcEnabled ); Wikimedia\restoreWarnings();
Except I can't find any place in php-apcu where that option is read from (did a quick grep), nor does it show up on phpinfo(), so I suspect it may have never been ported over in the apc->apcu migration?