Our goal is to lower the barrier to performance profiling. The WikimediaDebug browser extension for Firefox and Chromium, can now profile the backend MediaWiki PHP process, and turn it into an interactive flamegraph, powered by Excimer and Speedscope.

What are flamegraphs, when do you need it, and how does it work?

https://techblog.wikimedia.org/2023/06/08/flame-graphs-arrive-in-wikimediadebug/

#WebPerf #profiling #flamegraph #PerfMatters #PHP #MediaWiki #Excimer #Speedscope