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JSMeter: Comparing the Behavior of JavaScript Benchmarks With RealWeb Applications

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Executive Summary

JavaScript is widely used in web-based applications and is increasingly popular with developers. So-called browser wars in recent years have focused on JavaScript performance, specifically claiming comparative results based on benchmark suites such as SunSpider and V8. In this paper, the authors evaluate the behavior of JavaScript web applications from commercial web sites and compare this behavior with the benchmarks. They measure two specific areas of JavaScript runtime behavior: functions and code and events and handlers. They find that the benchmarks are not representative of many real web sites and that conclusions reached from measuring the benchmarks may be misleading.

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