How to disable logs while running QML application

vamsi1992

I'm running a qml application on ti jacintos j6+ while the application is running it is generating continous logs which are affecting the speed of the speed transitions in the application so i need to disable them but i'm not able to do that can someone help me ?
here are the logs

qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.quick.dirty: QSGNode: QQuickImage(0x207c78, parent=0x1e8f28, geometry=-1280,0 1280x800) ChildrenStackingChanged|Visible
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=1
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=6, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 11ms, sync=4, render=1, swap=5 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=0ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 18ms, sync=0, render=0, swap=18 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=17, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: update from item QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: update from item QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=1
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 17ms, sync=0, render=1, swap=16 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.quick.dirty: QSGNode: QQuickImage(0x384660, parent=0x388470, geometry=0,0 128x128) Content
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=11, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.texture: atlastexture uploaded in: 0ms (250x210)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=1
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=2, swap=14 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=1
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=0ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=0ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=0ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=0ms, preprocess=0, updates=0, binding=0, rendering=0
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop: (RT) - rendering done
qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop in 16ms, sync=0, render=1, swap=15 - (on render thread)
qt.scenegraph.renderloop: (RT) --- begin processEvents()
qt.scenegraph.renderloop: (RT) WM_RequestSync
qt.scenegraph.renderloop: (RT) --- done processEvents()
qt.scenegraph.renderloop: (RT) syncAndRender()
qt.scenegraph.renderloop: (RT) - updatePending, doing sync
qt.scenegraph.renderloop: (RT) sync()
qt.quick.dirty: QQuickWindowPrivate::updateDirtyNodes():
qt.scenegraph.renderloop: (RT) - sync complete, waking Gui
qt.scenegraph.renderloop: (RT) - rendering started
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop: (RT) sceneGraphChanged
qt.scenegraph.renderloop: - advancing animations
qt.scenegraph.renderloop: update on window - on render thread QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - animations done..
qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, polish=0, lock=0, blockedForSync=10, animations=0 - (on Gui thread) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.time.renderer: time in renderer: total=1ms, preprocess=0, updates=0, binding=0, rendering=1
qt.scenegraph.renderloop: - polish and sync update request
qt.scenegraph.renderloop: polishAndSync (normal) QQuickApplicationWindow_QML_0(0x1e2130)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync

ODБOï

@vamsi1992
hi try to call

 QLoggingCategory::setFilterRules("qt.scenegraph.general=false");

after instantiating the app

vamsi1992

QLoggingCategory::setFilterRules("qt.scenegraph.general=false");

it didn't worked

Pradeep P N

Hi @vamsi1992

Try the below line in main.cpp for disabling QML logs.

qputenv("QT_LOGGING_RULES", "qml=false");

Do you have the below lines in your .pro file ?

   DEFINES += QT_NO_DEBUG_OUTPUT
   DEFINES += QT_NO_DEBUG

All the best.

vamsi1992

thanks for the reply @Pradeep-P-N the solution din't worked

aha_1980

Hi @vamsi1992,

Which Qt version is that?

Regards

vamsi1992

@aha_1980 its 5.9.1