B4J Question CPU Load

jahswant

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• Jul 18, 2018

• #2

Your code will tell us what's wrong.

 

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Blueforcer

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• Jul 18, 2018

• #3

Nothing special

B4X:

t.Initialize("timer",100)
t.Enabled=True

Sub timer_tick
    angle=angle+2
    If angle = 360 Then angle =0
    CSSUtils.SetStyleProperty(Pane1, "-fx-rotate",angle)
End Sub

 

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jahswant

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• Jul 18, 2018

• #4

Try disable timer and see the results.

 

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Blueforcer

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• Jul 18, 2018

• #5

then there is no cpu load.
But i think a 100ms timer should not push a Quadcore so high?
Even 500ms need 40%

 

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jahswant

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• Jul 18, 2018

• #6

Try put to 1 sec

 

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Blueforcer

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• Jul 18, 2018

• #7

I am aware that a lower interval increases the CPU load. But 500ms should not be a problem for such a processor. especially since the timer runs in a thread.
With a raspberry 1 or 2 I wouldn't be too surprised, but not with such powerful hardware.

 

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Erel

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• Jul 18, 2018

• #8

This is not the correct way to create a rotation animation.

Correct way:

B4X:

Dim x As B4XView = YourView
x.SetRotationAnimated(18000, 360)

 

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