Browser Comparison - JavaScript Tests, July 2011
This page documents a comparison of browser performance in how each of them fares against the suite of JavaScript tests compiled by ECMAScript. The goal in this comparison is primarily to assess JavaScript compatibility, and not execution speed.
The tests were conducted on July 1, 2011. The results are given below for the browsers I tend to use. All the tests were run on an ACER Aspire 4730Z, Pentium Dual-core CPU T4200 @ 2.00 GHz with 3GB RAM and Windows Vista Home Premium Service Pack 2, 32-bit. It takes about 50 minutes to run the tests on each browser. [Browser Performance is tested against ECMA's Test262 Version 0.7.5.1, 30 June 2011, with 10934 tests]:
Tested version
Time to run (min.)
Passed tests
Failed tests
Did not load
Totals
12.0.742.112
55
10,427
507
0
5.0
42
10,662
262
0
9.0.8112.16421
20
10,634
300
0
11.50 Build 1074
46
6,995
3,873
66
5.0.5 (7533.21.1)
Crashes after ~300
~2,500
20
~8,414
A conspicuous item of note here is Apple Safari's inability to load, let alone pass or fail, all the tests. Opera did not load 66 of the tests. All of the others loaded all the 10,934 tests, but had varying degree of successful execution.