Since then, across 13 Chrome releases, we’ve achieved our new highest Speedometer score of 491. Just over a year ago we shared details about how we increased our score from 100 to over 300 from Chrome version 40 to version 101. Speedometer measures the responsiveness of websites by putting various JavaScript UI frameworks through their paces. Maglev will start rolling out in Chrome version 114, which begins release on June 5. Our measurements show Maglev has provided a 7.5 percent improvement on Jetstream and a 5 percent improvement in Speedometer. It reduces overall CPU time to compile code while also saving battery life. Maglev is a just-in-time compiler that can quickly generate performant machine code for all relevant functions within the first one-hundredth of a second. We’re bringing a new mid-tier compiler to Chrome. Announcing our brand new mid-tier compiler: Maglev In today’s The Fast and the Curious post, we want to share just some of the ways we drove these improvements in Chrome. These gains were achieved through a combination of large projects and small improvements. Over the last year Chrome has invested in optimizing against these specific benchmarks and has just achieved our highest scores across all three.

The most relevant web benchmarks today are Speedometer, MotionMark, and Jetstream. Since the beginning of Chrome, benchmarks have been a key way by which we drive performance optimizations that benefit users.

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