JavaScript 在XP SP2和Vista SP1上的基准测试对比

Vista之家（www.vista123.com）：浏览器JavaScript性能横向测试的报告已经有很多,相信大家都已经看腻了,接下来咱们不谈浏览器,只看看相同的浏览器在不同配置,不同操作系统上的性能差异.

这位朋友用一台3.2GHz的四核心系统+2GB RAM的高端机运行 Windows Vista SP1,用2.1GHz的双核处理器,256M的低端机运行XP SP2, 结果还是发现后者的数据有两项高于前者, 它们分别是Opera浏览器和FireFox 3.0 Beta版,这说明Vista 就是一个耗费资源的大户,而且在满足了用户视觉效果以后牺牲了自身的效率.真让人惊奇.

原文如下：

SunSpider JavaScript Benchmark - XP SP2 vs. Vista SP1

Is browser performance affected by OS, CPU and the amount of RAM available?

A comment made by dfolk in response to my Firefox 3.0 Beta 4 benchmarking post got me back to the lab to do some more benchmarking.  Here’s the comment that set it off:

Good test, but it would be nice if you did some testing on a more commonplace computer- something like an ordinary XP computer with 1 or 2 Gb of ram. This would be more meaningful to most of your readers- Vista is used only by a small minority of computer users at this time. I question the value of the test to most computer operators when the testing is conducted on Vista, and probably with a VERY high powered machine comparatively speaking. Would such a test have similar results on a more ordinary machine? Not to pick nits, I am simply wondering what applicability your testing would have to most users.

My initial testing was done on a 3.2GHz quad-core system with 2GB of RAM on Vista SP1 32-bit.  A high power system, but since I was comparing the browsers on a like-for-like system, it didn’t seem to matter.  Surely on a slower system the only difference would be that the overall scores would be higher indicating a slower system.

Well, I decided to take up the challenge.  I re-ran the SunSpider JavaScript benchmark but this time instead of running it on a quad-core beast I ran it on a Windows XP SP2 system with 256MB of RAM and a 2.1GHz dual-core CPU.  Would this make much of a difference?  Well, see for yourself:

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