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Home » Eclipse Projects » e(fx)clipse » Switch perspective is slow in e(fx)clipse(Have multiple perspectives in my app, If I open perspective A and then open perspective B, when I switch back to perspective A, the application's main thread will pause.)

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Switch perspective is slow in e(fx)clipse [message #1807847]

Tue, 11 June 2019 05:20

Zhendong Li

Messages: 10
Registered: October 2018

Junior Member

I tried to track this problem using VisualVM and found that javafx.scene.CssStyleHelper.createStyleHelper() took the most CPU time when I switched perspective A again.
Does this mean that the interface of perspective A has been redrawn?
If you switch between different parts in the same perspective, this problem will not occur.

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Re: Switch perspective is slow in e(fx)clipse [message #1807862 is a reply to message #1807847]

Tue, 11 June 2019 07:59

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

You are right there are 2 problems:
* at some time in JDK-8 Timeframe a performance fix for CSS processing was reverted
* we detach the active perspective on switching

We can (and should) do 2 things:
* apply a workaround we already use for eg detach to minimize the impact by detaching
* don't detach the node containing the perspective but keep it in the SG

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Re: Switch perspective is slow in e(fx)clipse [message #1807872 is a reply to message #1807862]

Tue, 11 June 2019 08:45

Zhendong Li

Messages: 10
Registered: October 2018

Junior Member

Thank you very much for your reply!
Looking forward to any progress~(●'◡'●)

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Re: Switch perspective is slow in e(fx)clipse [message #1819510 is a reply to message #1807872]

Thu, 16 January 2020 13:13

Zhendong Li

Messages: 10
Registered: October 2018

Junior Member

I'm back to the question. In the efx3.6 release note, I noticed that the second item had been fixed(we detach the active perspective on switching).
And I tried different versions of jdk and found that before jdk1.8_181 CSS was very good . Do you know anything about the first(CSS processing was reverted), Can I track the issue in the jdk repository.
Thank you very much for your work!

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