https://bugs.kde.org/show_bug.cgi?id=484323
--- Comment #3 from Francisco <franje...@gmail.com> --- (In reply to fanzhuyifan from comment #2) > Hotspot profiling data pointing to where these processes are using all > those cpu cycles would be extremely helpful. I did some profiling on kwin_x11 with debuginfod data and this is the gist of it. You can get the full trace from https://pub-32f46577ac8f4e2b84ba6635b1d55699.r2.dev/pepe.perf and load it in https://profiler.firefox.com or https://www.speedscope.app/ I have used a simple "perf report" to generate the lines below: Samples: 62K of event 'cycles:P', Event count (approx.): 23722680927 Children Self Command Shared Object Symbol - 36,84% 0,00% kwin_x11 kwin_x11 [.] 0x000055638a2d3ef4 ◆ 0x55638a2d3ef4 ▒ __libc_start_main ▒ 0x7f905a643ccf ▒ 0x55638a2cfc24 ▒ - QCoreApplication::exec() ▒ - 36,84% QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ▒ - 36,83% QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ▒ - 36,81% g_main_context_iteration ▒ - 36,62% 0x7f9059c973a6 ▒ - 36,58% 0x7f9059c38f68 ▒ - 19,21% 0x7f90559ecbd6 ▒ - 19,18% QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) ▒ - 18,69% QXcbConnection::handleXcbEvent(xcb_generic_event_t*) ▒ - 10,83% QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long long*) ▒ - 8,47% KWin::Workspace::workspaceEvent(xcb_generic_event_t*) ▒ - 6,78% KWin::Workspace::createUnmanaged(unsigned int) ▒ + 3,75% KWin::X11Window::X11Window() ▒ + 2,18% KWin::X11Window::track(unsigned int) ▒ + 0,65% operator new(unsigned long) ▒ + 1,30% KWin::Workspace::updateXStackingOrder() ▒ + 2,19% 0x7f905dbbf6d9 ▒ - 7,78% QXcbConnection::initializeScreens(bool) ▒ - 7,75% QXcbConnection::initializeScreensFromMonitor(xcb_screen_iterator_t*, int, QXcbScreen**, bool) ▒ - 6,57% QXcbConnection::updateScreen_monitor(QXcbScreen*, xcb_randr_monitor_info_t*, unsigned int) ▒ - 3,51% QXcbScreen::updateColorSpaceAndEdid() ▒ + 2,06% QEdidParser::parse(QByteArray const&) ▒ + 0,74% QXcbScreen::getEdid() const ▒ 0,69% xcb_wait_for_reply ▒ + 3,04% QXcbScreen::setMonitor(xcb_randr_monitor_info_t*, unsigned int) ▒ 0,62% xcb_wait_for_reply ▒ + 0,54% QXcbConnection::findScreenForMonitorInfo(QList<QPlatformScreen*> const&, xcb_randr_monitor_info_t*) ▒ - 17,34% 0x7f905af75723 ▒ - 17,34% QTimerInfoList::activateTimers() ▒ - 17,33% QCoreApplication::notifyInternal2(QObject*, QEvent*) ▒ - 17,33% QApplicationPrivate::notify_helper(QObject*, QEvent*) ▒ - 17,25% QObject::event(QEvent*) ▒ - 17,25% QTimer::timerEvent(QTimerEvent*) ▒ - 17,23% 0x7f905ad90ca8 ▒ - 17,20% 0x55638a2ddafc ▒ - 6,10% 0x55638a2dd69e ▒ + 6,09% KWin::Edid::Edid(void const*, unsigned int) ▒ + 4,57% 0x55638a2dccba ▒ + 3,02% 0x55638a2dc985 ▒ + 0,77% 0x55638a2dcc32 ▒ + 0,71% 0x55638a2dcfaa ▒ + 0,70% 0x55638a2dd163 ▒ + 0,67% 0x55638a2dcdff ▒ -- You are receiving this mail because: You are watching all bug changes.
