[Interest] QT Webkit performance

Allan Sandfeld Jensen kde at carewolf.com
Mon Sep 21 17:16:09 CEST 2015

On Monday 21 September 2015, Florin Maticu wrote:
> Hello,
> I have recently compiled *qt5.6* with the configuration bellow:
> *qt 5.6 configuration options*
> ./configure -v -opensource -arch arm -opengl es2 -egl -no-fontconfig
> -confirm-license -debug -verbose -device imx6 -device-option
> CROSS_COMPILE=arm-linux-gnu- -sysroot /home/fmaticu/sysroot
> -optimized-qmake -reduce-exports -gstreamer 1.0
> I have a simple browser that is using qtwebkit to display an url page.
> I am using Methanol benchmark tool (https://github.com/szeged/methanol) for
> testing the browser.
> The browser is writing to the linux framebuffer. While running the tests I
> have noticed that the cpu load is always higher than 50%.
> How can I improve the performance of the QtWebkit, in terms of cpu load?
> Is there support in the qtwebkit for GPU rendering?
Yes,  it should do it more or less automatically when using the QML API. If 
you are using QWebView, you should switch to QGraphicsWebView and set a 
QOpenGLWidget as the view on the hosting QGraphicsView. That way compositing
will be done using the GPU.


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