Hello, the "CPU Load Monitor" widget causes ~10-20% CPU load in plasmashell all by itself (on a Core 2 Duo E8600), while the "System Load Viewer" widget instead causes no significant load. the gdb backtrace shows the Qt rendering engine and OpenGL/Nouveau as prime suspects: #0 0x00007fa04cd6991f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007fa0525ec569 in () at /usr/lib64/libxcb.so.1 #2 0x00007fa0525edb9f in () at /usr/lib64/libxcb.so.1 #3 0x00007fa0525edcb2 in xcb_wait_for_reply () at /usr/lib64/libxcb.so.1 #4 0x00007fa05284528f in _XReply () at /usr/lib64/libX11.so.6 #5 0x00007fa0490c6b13 in () at /usr/lib64/libGL.so.1 #6 0x00007fa0490c6e1b in () at /usr/lib64/libGL.so.1 #7 0x00007fa02f7133f2 in () at /usr/lib64/dri/nouveau_dri.so #8 0x00007fa02f710418 in () at /usr/lib64/dri/nouveau_dri.so #9 0x00007fa02f65480e in () at /usr/lib64/dri/nouveau_dri.so #10 0x00007fa02f655d91 in () at /usr/lib64/dri/nouveau_dri.so #11 0x00007fa02f622aa1 in () at /usr/lib64/dri/nouveau_dri.so #12 0x00007fa02f62913f in () at /usr/lib64/dri/nouveau_dri.so #13 0x00007fa05175df38 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib64/libQt5Quick.so.5 #14 0x00007fa05176422b in QSGBatchRenderer::Renderer::render() () at /usr/lib64/libQt5Quick.so.5 #15 0x00007fa05176e994 in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib64/libQt5Quick.so.5 #16 0x00007fa05176eddb in QSGRenderer::renderScene(unsigned int) () at /usr/lib64/libQt5Quick.so.5 #17 0x00007fa05177c39e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib64/libQt5Quick.so.5 #18 0x00007fa0517c5154 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib64/libQt5Quick.so.5 #19 0x00007fa051796ef6 in () at /usr/lib64/libQt5Quick.so.5 #20 0x00007fa0517978e5 in () at /usr/lib64/libQt5Quick.so.5 #21 0x00007fa04f384aec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5 #22 0x00007fa04f389940 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5 #23 0x00007fa04e02f4b5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5 #24 0x00007fa04e08620d in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5 #25 0x00007fa04e086531 in () at /usr/lib64/libQt5Core.so.5 #26 0x00007fa049c57c74 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0 #27 0x00007fa049c57ec8 in () at /usr/lib64/libglib-2.0.so.0 #28 0x00007fa049c57f6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0 #29 0x00007fa04e0867fc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5 #30 0x00007fa04e02d40b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5 #31 0x00007fa04e034a96 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5 #32 0x0000000000433278 in main(int, char**) (argc=4, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.3.1/shell/main.cpp:154 Should I report this upstream and/or provide callgrind data? Regards, Ingmar -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org