performance.wikimedia.org
performance.wikimedia.org is the portal for Wikimedia Peformance, currenlty maintained by MediaWiki Engineering and SRE/Observability.
Service
Currently hosted on webperf003.
perfsite
See also Performance/Runbook/Webperf-processor services#perfsite.
Arc Lamp
MediaWiki collects stack traces using php-excimer and sends them to the Arc Lamp service, which then stores them as log files and also generates interactive SVG flame graphs using the FlameGraph tool. The perf site exposes these files from the Arc Lamp server via an Apache proxy.
XHGui
The XHGui web service is exposed via an Apache proxy.