i.mx6q and Qt5 qml performances using eglfs

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i.mx6q and Qt5 qml performances using eglfs

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mralmond
Contributor II

Hi everyone,

I'm doing some graphics comparative tests between i.mx6s and i.mx6q.

My "benchmark" is an application written in Qt5.1.0/qml that does a lot of graphical transitions.

With the i.mx6s at 1080p HDMI the performances were not so good...and this was expected...then I tried with the quad core version (i.mx6q) and with my great surprise I noticed that in this case the performances were just a little better than with the solo version.

The main difference is that the CPU load is around 60-80% with the solo and around 10-30% with the quad.

Please can someone explain me why I'm not getting very good performances with the quad core?

Could it be a problem with DDR bandwidth?

Thanks.

mrA

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