What is the best independent test suite for benchmarking JavaScript engines?
I'm looking for the best tool for benchmarking the speed of JavaScript interpreters. 

Preferably this shouldn't be a tool written by a conflicted party such as Mozilla or Google, although I understand that these might give the most accurate representation.
What is the best independent test suite for benchmarking JavaScript engines?
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I'm looking for the best tool for benchmarking the speed of JavaScript interpreters. 

Preferably this shouldn't be a tool written by a conflicted party such as Mozilla or Google, although I understand that these might give the most accurate representation.