IronJS Blog

All things IronJS and F#

IronJS is now faster than IE8

with 4 comments

We just hit a pretty major milestone in the dev branch of IronJS: We’ve surpassed IE8 in performance. I’ll try to keep this short and get straight to the point (the benchmarks), here is IronJS side-by-side to IE8, Jurassic and Jint (two other .NET based JavaScript runtimes).

Note the Jint failed on several tests and those have a zero as result. Click on the image for full size.

Sunspider 0.9.1

We’ve still got a long way to go until we reach our goal (within 300% of V8), but it’s looking good so far!

Update: Here’s the total test score also


Written by Fredrik Holmström

April 25, 2011 at 12:42 am

Posted in IronJS

4 Responses

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  1. Dude, that is some exciting stuff! Keep it up, man.

    Charles Strahan

    April 27, 2011 at 12:57 am

  2. This is impressive. I was using Jint, but I think I’ll switch to IronJS now.

    Though, I’d like to see a comparison with JavaScript .NET which is based on v8, here…

    Either way, good to see, keep it up!


    May 2, 2011 at 10:22 am

    • V8 looks very cool, except that it only supports one thread running one script at a time per process.

      James Hugard

      May 12, 2011 at 7:07 am

  3. Very cool!


    June 22, 2011 at 1:33 am

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