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Mozilla claims Firefox 4 will have superior JavaScript performance

Posted on Thursday, August 19 2010 @ 13:10:37 CEST by


Mozilla director of web platform Chris Blizzard claims the JavaScript performance of Firefox 4 will be "one generation" ahead of all other browsers.
The open source outfit is working to enhance the Firefox JavaScript engine via a new extension dubbed J├ĄgerMonkey. With the debut of Firefox 3.5 last year, Mozilla significantly juiced JavaScript performance with a "tracing" compiler known as TraceMonkey, but not all JavaScript code is suited to this technique, which works to convert code loops into speedy assembly language. J├ĄgerMonkey aims to improve performance when tracing doesn't apply.

"What we've seen is that in places where our Tracing-Engine gets used we are actually faster than anyone else, it's just in those cases where it doesn't fit that others do a lot better," Blizzard told derstandard.at during an interview at a Linux desktop conference in the Netherlands. "So we're trying to improve our baseline performance and combine that with the Tracing-JIT, with this we'll be one generation ahead of everyone else."
Additionally, Blizzard also claimed that the performance differences between current-gen JavaScript engines are very small, and he questioned the reliability of JavaScript benchmarks, stating that the numbers are mostly not influenced by real JavaScript performance anymore.



 



 

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