![]() ![]() Worst case performance ensures web applications can run without hiccups. Fast startup times lead browsers to loading pages more quickly. These three metrics are crucial to running performant JavaScript Of any workload is usually more expensive than the rest.įor most of the JavaScript benchmarks in JetStream 2, individual scoresĮqually weigh startup performance, worst case performance, and average case Code that runs repeatedly gets optimized by the browser, so the first iteration For example, garbage collection runs periodically, making some iterations take longer than It's not enough to just measure the total running time of a workload.īrowsers may perform differently for the same JavaScript workload depending on how many times it JetStream 2 weighs eachīenchmark equally, taking the geometric mean over each individual benchmark's score to compute ![]() JetStream 2 rewards browsers that start up quickly, execute code quickly, and continue running smoothly.Įach benchmark in JetStream 2 computes its own individual score. Some benchmarks demonstrate tradeoffs, andĪggressive or specialized optimizations for one benchmark might make another benchmark slower. Technique is sufficient to speed up all benchmarks. JetStream 2 combines together a variety of JavaScript and Web Assembly benchmarks, covering a variety ofĪdvanced workloads and programming techniques, and reports a single score thatĮach benchmark measures a distinct workload, and no single optimization ![]()
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