This is SunSpider, a JavaScript benchmark. This benchmark tests the
+core JavaScript language only, not the DOM or other browser APIs. It
+is designed to compare different versions of the same browser, and
+different browsers to each other. Unlike many widely available
+JavaScript benchmarks, this test is:
+
+
+
Real World
+
This test mostly avoids microbenchmarks, and tries to focus on
+the kinds of actual problems developers solve with JavaScript today,
+and the problems they may want to tackle in the future as the language
+gets faster. This includes tests to generate a tagcloud from JSON
+input, a 3D raytracer, cryptography tests, code decompression, and
+many more examples. There are a few microbenchmarkish things, but they
+mostly represent real performance problems that developers have
+encountered.
+
+
Balanced
+
This test is balanced between different areas of the language and
+different types of code. It's not all math, all string processing, or
+all timing simple loops. In addition to having tests in many
+categories, the individual tests were balanced to take similar amounts
+of time on currently shipping versions of popular browsers.
+
+
Statistically Sound
+
One of the challenges of benchmarking is knowing how much noise
+you have in your measurements. This benchmark runs each test multiple
+times and determines an error range (technically, a 95% confidence
+interval). In addition, in comparison mode it tells you if you have
+enough data to determine if the difference is statistically
+significant.
+
+
+
+
Current version - sunspider-0.9.1:Start Now!
+(When you run the benchmark, be patient - it loops through all of the
+test cases five times and can take a minute or longer to complete.)