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From "Sandro Martini (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIVOT-860) CPU Usage at 100% when displaying an Expander
Date Mon, 25 Jun 2012 15:10:43 GMT

     [ https://issues.apache.org/jira/browse/PIVOT-860?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sandro Martini updated PIVOT-860:
---------------------------------

    Attachment: pivot_kitchensink_expanders_profile_test_0.png

First test, simply attach JVisualVM, and see what happens.
It seems that Expanders are doing something that's causing too much GC overhead, and even
some memory leak.
For sure something that needs to be fixed.
                
> CPU Usage at 100% when displaying an Expander
> ---------------------------------------------
>
>                 Key: PIVOT-860
>                 URL: https://issues.apache.org/jira/browse/PIVOT-860
>             Project: Pivot
>          Issue Type: Bug
>    Affects Versions: 2.0.2
>         Environment: Windows XP, reproduced on Java 6 (various versions) and Java 7
>            Reporter: Guillaume Deshors
>            Assignee: Sandro Martini
>            Priority: Minor
>              Labels: performance
>             Fix For: 2.0.3
>
>         Attachments: pivot_kitchensink_expanders_profile_test_0.png
>
>
> 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.

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