TechNote (Archived)

Progress bar high CPU usage

Issue

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In Macromedia Flex, a ProgressBar with theindeterminate attribute set to true consumes approximately 1-5% of the CPU to run it's animation. Even when the ProgressBar's visible property is set to false, it can still consume the same amount of CPU. If you create a component that uses the mx:ProgressBar and this is used throughout your application, you can get an increasing amount of CPU usage (in some cases as high as 80%).

Reason

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This is due to the fact that the ProgressBar continues to run even though the visible attribute is set to false.

Solution

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Set the progress bar visible=false, but also setindeterminate=false.

For example:

<mx:ProgressBar visible="false" indeterminate="false"

Search Support

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