Most hazardous performance bottleneck misconceptions

Posted by David Murdoch on Stack Overflow See other posts from Stack Overflow or by David Murdoch
Published on 2010-04-20T22:36:57Z Indexed on 2010/04/20 22:43 UTC
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Filed under:

optimization

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Performance

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language-agnostic

The guys who wrote Bespin (cloud-based canvas-based code editor [and more]) recently spoke about how they re-factored and optimize a portion of the Bespin code because of a misconception that JavaScript was slow. It turned out that when all was said and done, their optimization produced no significant improvements.

I'm sure many of us go out of our way to write "optimized" code based on misconceptions similar to that of the Bespin team.

What are some common performance bottleneck misconceptions developers commonly subscribe to?

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