Manual:WgBackendResponseTime

wgBackendResponseTime is the number of milliseconds consumed to serve the page. The value is contained in the HTML of a page similar to this example: if(window.mw){ mw.config.set({"wgBackendResponseTime":224,"wgHostname":"mw1170"}); } This has replaced the "served by mw1170 in 224 ms" HTML comment previously provided by MediaWiki, around 1.23.