[PIVOT-860] CPU Usage at 100% when displaying an Expander

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.2
• Fix Version/s: 2.0.3
• Labels: performance
• Environment: Windows XP, reproduced on Java 6 (various versions) and Java 7
• Assignee: Roger Lee Whitcomb
• Reporter: Guillaume Deshors
• Created: 22/Jun/12 15:13
• Updated: 27/Jul/12 21:23
• Resolved: 27/Jul/12 20:19

Description

When displaying an Expander component, the CPU usage immediately goes up and stays at 100% as long as the component is displayed (even if the window is background, reduced or whatever).
To be precise, I really had 50% because I have a dual core : one of the core was 100%.

Reproduced on 3 different computers, all Windows XP, with Java 6 and 7.
Reproduced in applet and in standalone application shape.

Steps to reproduce :
1/ go to http://pivot.apache.org/tutorials/sample-application.html
-> CPU is normal, say 5%
2/ click on "navigation" to see the expander
-> CPU is at 100%, at least one of the cores.

Alternative : just go to http://pivot.apache.org/tutorials/expanders.html and expect the same.