Contributing to Speedometer 3.0: Capturing real-world challenges on the web (blogs.windows.com)
from tedu to webdev on 13 Mar 2024 19:10
https://azorius.net/g/webdev/p/mQJz1PMY29C5v911nj-Contributing-to-Speedometer-30-Capturing-realwor

These investigations have consistently shown that the complexity of the DOM and CSS rules is an important driver of end-user perceived latency. Inefficient patterns, often encouraged by popular frameworks, have exacerbated the problem, creating new performance cliffs within modern web applications. The new Complex DOM tests perform DOM mutations in the context of a large DOM tree, which trigger a cascade of costly CSS selector matching operations and style recalculations.

#perf #webdev