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> Am I just remembering incorrectly, or haven't they already declared "we're as fast as Chrome now" several times in the past. https://arewefastyet.com/ https:

> Am I just remembering incorrectly, or haven't they already declared "we're as fast as Chrome now" several times in the past. https://arewefastyet.com/ https://arewefastyet.com/ refers specifically and only to Firefox's javascript engine. It runs js benchmarks only, not whole websites, and doesn't test responsiveness or rendering performance. Javascript performance in firefox has been on par with competing browsers for a while now. The current initiative, called Quantum, is complementary to this effort. It is supposed to make the rest of the browser components fast, using among other things a new renderer, a CSS styling engine, and multiprocessing support.

sfink 9y ago
Not entirely true anymore. If you select eg "Quantum Reference (Windows, browser, x64)" and look at the Breakdown list, you'll see a couple of browser benchmarks that look at responsiveness and rendering. Speedometer and Unity WebGL, for example. But yeah, it's mainly all about JS. Since the Quantum effort started, the JS team has prioritized perf work higher, so quite a bit of perf-related improvements have been made in Spidermonkey for 57 as well. (And Quantum DOM needed some rearchitecting to re-multithread the engine in a limited way.) (Source: I work on Spidermonkey.)