Skinner sez: Thou Shall Use Export Release Build!

December 10th, 2008 Chris Griffith Posted in Flex | 1 Comment »

Grant Skinner as post a great tip on his blog. When preparing a Flex project for release, make sure you use the Export Release Build menu item. The SWF that is generated when you run or debug your project contains a lot of extra byte code used for debugging and profiling your content.

This extra byte code has a very obvious effect on the size of your SWF (adding over 35% in some cases). It also has a less immediately obvious (but no less significant) effect on the performance of your application.

Grant points out that a 980kb SWF they built was reduced to 675kb, and some performance intensive code ran over 2.5x faster in the release build than in the debug version.

Thanks for the reminder!

 


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One Response to “Skinner sez: Thou Shall Use Export Release Build!”

  1. greg h Says:
    December 10th, 2008 at 10:50 pm

    Hi Chris,

    Absolutely correct regarding the importance of using “Export Release Build”.

    And equally important on getting SWF sizes down, is using the Framework caching too!

    One fellow’s positive experience here:
    http://tech.groups.yahoo.com/group/flexcoders/message/108149

    The how to in the docs here:
    http://livedocs.adobe.com/flex/3/html/rsl_09.html

    Also a Flexcoders thread on this topic here (follow threads at the bottom of this page):
    http://www.mail-archive.com/flexcoders@yahoogroups.com/msg103723.html

    Happy Flexing!

    g

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