The tech giant Google claims that Chrome has scored the highest on the Speedometer 3 test ever. The test evaluates the performance of browsers, and those built on Google’s open-source browser engine perform the best. The performance of Chrome has increased by 10% since August 2024. Google’s version of the benchmarking tool has been superseded by Speedometer 3.1, the most recent version.
The blog post said, “Today’s The Fast and the Curious post explores how Chrome achieved the highest score on the new Speedometer 3.0, an upgraded browser benchmarking tool to optimise the performance of Web applications.”
Google claims that by analysing Chrome‘s performance over time, it optimised it to obtain the highest Speedometer 3 score. The company has contributed to a 72% rise in Chrome’s Speedometer score since the benchmark’s launch in May 2022, which has improved user performance.
For those who don’t know, Google, Apple, Mozilla, Intel, and Microsoft collaborated to create Speedometer 3.0, a browser measurement tool, with the goal of making Chrome quicker for users.
To increase Chrome’s score, specific optimisations were implemented after analysing Chrome’s workloads and the most time-consuming features. The SpaceSplitString method was optimised to eliminate redundant bound tests and duplicated stylesheets. Memory allocations were optimised to decrease drawing path and arc expenses. Additionally, superfluous processing was discovered when constructing form editors. Common selectors were discovered inside querySelector, resulting in the establishment of a hot path for common selectors. These optimisations resulted in increased Chrome’s overall performance.
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The Chrome 137 stable version got 51.43 points in the Speedometer 3 benchmark test, while the beta and development versions earned 51.83 and 52.35 points, respectively, according to a company graph.
Google claims that it optimised innerHTML utilising fast paths for parsing, which was applied in WebKit and extended for a 1% increase in Speedometer 3. It also improved the way Chrome renders AAT fonts, such as those used in Apple Mac OS system fonts. Text is processed as a stream of Unicode characters, then converted into a glyph stream and sent via a state machine described in the AAT font. This optimisation enables it to identify glyph participation in the state machine rules, resulting in quicker processing times.
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According to Thomas Nattestad, Chrome Product Manager, Speedometer 3 has witnessed a 3% increase in garbage collection improvements. V8’s garbage collector makes use of renderer idle time to avoid interference with application code. Recent enhancements expand existing techniques to prioritise garbage collection during idle time on active renderers, such as DOM finalisation code that runs when objects are reclaimed. This reduces competition between conventional application code and CPU resources. V8 now allows a more compact layout for objects that encapsulate DOM components, which reduces memory burden and garbage collection time.
