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main_repo / deps / v8 / benchmarks / README.txt @ 40c0f755
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1 | 40c0f755 | Ryan | V8 Benchmark Suite |
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2 | ================== |
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3 | |||
4 | This is the V8 benchmark suite: A collection of pure JavaScript |
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5 | benchmarks that we have used to tune V8. The licenses for the |
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6 | individual benchmarks are included in the JavaScript files. |
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7 | |||
8 | In addition to the benchmarks, the suite consists of the benchmark |
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9 | framework (base.js), which must be loaded before any of the individual |
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10 | benchmark files, and two benchmark runners: An HTML version (run.html) |
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11 | and a standalone JavaScript version (run.js). |
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12 | |||
13 | |||
14 | Changes From Version 1 To Version 2 |
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15 | =================================== |
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16 | |||
17 | For version 2 the crypto benchmark was fixed. Previously, the |
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18 | decryption stage was given plaintext as input, which resulted in an |
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19 | error. Now, the decryption stage is given the output of the |
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20 | encryption stage as input. The result is checked against the original |
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21 | plaintext. For this to give the correct results the crypto objects |
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22 | are reset for each iteration of the benchmark. In addition, the size |
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23 | of the plain text has been increased a little and the use of |
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24 | Math.random() and new Date() to build an RNG pool has been removed. |
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25 | |||
26 | Other benchmarks were fixed to do elementary verification of the |
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27 | results of their calculations. This is to avoid accidentally |
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28 | obtaining scores that are the result of an incorrect JavaScript engine |
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29 | optimization. |
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30 | |||
31 | |||
32 | Changes From Version 2 To Version 3 |
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33 | =================================== |
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34 | |||
35 | Version 3 adds a new benchmark, RegExp. The RegExp benchmark is |
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36 | generated by loading 50 of the most popular pages on the web and |
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37 | logging all regexp operations performed. Each operation is given a |
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38 | weight that is calculated from an estimate of the popularity of the |
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39 | pages where it occurs and the number of times it is executed while |
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40 | loading each page. Finally the literal letters in the data are |
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41 | encoded using ROT13 in a way that does not affect how the regexps |
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42 | match their input. |