# Comprehensive performance guide?

**URL:** <https://forum.kirupa.com/t/comprehensive-performance-guide/295820>\
**Category:** flash\
**Created:** [September 5, 2009, 12:13am UTC](https://forum.kirupa.com/t/comprehensive-performance-guide/295820 "2009-09-05T00:13:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![JoeDurb](https://avatars.discourse-cdn.com/v4/letter/j/3e96dc/32.png) [@JoeDurb](https://forum.kirupa.com/u/JoeDurb)\
**Post date:** [September 5, 2009, 12:13am UTC](https://forum.kirupa.com/t/comprehensive-performance-guide/295820/1 "2009-09-05T00:13:59Z")

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I’ve looked for a good list of performance best-methods for AS3, and haven’t found much help. Does anyone know of a good writeup on the subject, I’m just buried now to research the dozens of things I’d like to know… (and mostly for things I won’t realize, like the whole silly appendText speedup)

For instance:

_ **Is it Quicker to Check for visibility, and change .visible on a MC if needed or just SET it?** _

_ **Whats the quickest way to tell if a movieclip is on a display list?** _

_ **Is swapChildren faster than 2 addChildAt’s?** _

_ **At how many usages is array-access notation slower than having made a pointer?** _

etc… etc…

I suppose the answer is I just need to be benchmarking all of these questions as I go back and Optimize, But I would think these would all be common Design questions… . So, must be a good list, somewhere??

Thanks much.  
-Joe