Memory overflow with QT 5.1X and Intel GPU graphic

Norbert

Hello everyone,

We actually use QT 5.1X on Intel NUC with

Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz
Intel(R) HD Graphics (Coffeelake 3x8 GT3)
OpenGL ES 3.2 Mesa 17.2.3

The app display pictures using QML image: and QQuickImageProvider on 2 windows.
We are currently experiencing a big problem of memory consumption.(All memory is consume)

Has anyone ever encountered this problem with the Intel HD Graphics ?

Your help is really welcome !
Thanks !

SGaist

Hi,

Qt 5.1X is a bit vague, what exact version are you using ?
Can you show the code you are using ?
Did you try updating/downgrading your graphic card driver ?

Norbert

Hello, the versions :

Version : QT 5.10.1-0-201802092256
CentOS Linux release 7.5.1804
OpenGL version string: 3.0 Mesa 17.2.3
00:02.0 VGA compatible controller: Intel Corporation Device 3ea5 (rev 01)

OpenGL and Intel GPU seems to be strongly linked.
The intel driver goes with the Centos version.

SGaist

Can you check whether you have the same phenomenon with a more recent version of Qt ? And if not, with an older one ?

Norbert

Hello,

We have same problem with QT 5.8, Qt 5.11.0, QT5.11.1 in 2 screens and 2 windows

With 1 screen and 1 windows not problem.

SGaist

Is it not a problem or is the leak taking way longer to eat all the memory ?

Norbert

It is a big problem.
On2 screens only, each time a image is updated the memory is consume and not freed.
After 1 minutes 32 Go of mem are consume and after the swap and computer can not run.

SGaist

What I meant was: is it really "not a problem" with only 1 screen and 1 window or is it just the memory leak that is way slower in that setup ?

Norbert

With only 1 screen and 1 windows we don't see memory leak.