PHP – [[WM:TECHBLOG]]

Flame graphs arrive in WikimediaDebug

The new “Excimer UI” option in WikimediaDebug generates flame graphs. What are flame graphs, and when do you need this?

Long exposure of highway with downtown skyscraper in the background of an unidentified city. There are green grass hills on both sides and a bright moon in the sky.

Perf Matters at Wikipedia in 2016

Looking back at our ups and downs.

Profiling PHP in production at scale

We built an efficient sampling profiler for PHP. It runs continually in production on live requests, and generates trace logs and flame graphs.

2020: The Year in Vue

A look back at a year of experiences of using Vue within the Structured Data team.

Impact of using HTTP connection pooling for PHP applications at scale

This post explores the challenges of running PHP applications at a large scale and discusses the effect of using Envoy on MediaWiki applications.

Celebrating 600,000 commits for Wikimedia

A reflection on the developer services we offer and our community of developers.

Parsoid in PHP, or there and back again

In December 2019, we replaced the original version of Parsoid, written in JavaScript, with a version written in PHP, the primary programming language of MediaWiki. This new version, called Parsoid/PHP, is roughly twice as fast on most requests as the original version Parsoid/PHP brings us one step closer to integrating Parsoid and other MediaWiki wikitext-handling code into a single system.

WikimediaDebug v2 is here!

WikimediaDebug is a set of tools for debugging and profiling MediaWiki web requests in a production environment. WikimediaDebug can be used through the accompanying browser extension, or from the command-line. This post highlights changes we made to WikimediaDebug over the past year, and explains more generally how its capabilities work.