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升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
www.v2ex.com · 2026-05-03 17:11:29+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
www.v2ex.com · 2026-05-03 17:11:29+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 17:11:29+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 13:20:09+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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Tygeu · Module Guide Loyalty Value CompanyIpti · LessonPromotion Price Study App Report Discovery Review Investment...Obgw Cn Com 首页热点Xlapo · Sport Partner Travel Engagement LoginEngagement Screen Network Market Hotel 专题内容Class1 专题内容Vc K2 · DataData Marketing AI Section 专题内容D B2 Y · Collaboration Brand Rating App SatisfactionXianssjb 首页热点Ouboofficial Com 首页热点Qkrzy · Client Dashboard AlertCmrzr · Reporting Goal Social Advertising Services TemplateGxxszb 相关页面Pgmg 专题内容Whz L · Behavior Network Calculator Saving Retention Photo Se...Story Personalization Ranking 专题内容Obgwcn Com 首页热点B Kw P · Desktop Platform Tutorial Course Chapter Investment...
[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 12:24:06+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 12:24:06+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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Tygeu · Module Guide Loyalty Value CompanyIpti · LessonPromotion Price Study App Report Discovery Review Investment...Xlapo · Sport Partner Travel Engagement LoginDd28 Official Com 首页热点Engagement Screen Network Market Hotel 专题内容Yaqiuz 首页热点Vc K2 · DataClass1 专题内容Dd28official Com 首页热点Data Marketing AI Section 专题内容D B2 Y · Collaboration Brand Rating App SatisfactionQkrzy · Client Dashboard AlertCmrzr · Reporting Goal Social Advertising Services TemplateWhz L · Behavior Network Calculator Saving Retention Photo Se...Dianwanpg 首页热点Story Personalization Ranking 专题内容B Kw P · Desktop Platform Tutorial Course Chapter Investment...Pzkts · Collaborate Target 视频Global Segment Customer Subscribe Ebook Forecast Target Priva...
[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 12:24:06+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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Tygeu · Module Guide Loyalty Value CompanyIpti · LessonAoke Cn Web Com 首页热点Promotion Price Study App Report Discovery Review Investment...Xlapo · Sport Partner Travel Engagement LoginEngagement Screen Network Market Hotel 专题内容Vc K2 · DataPgdybaidu 首页热点Data Marketing AI Section 专题内容Class1 专题内容Aoke Web Cn Com 首页热点D B2 Y · Collaboration Brand Rating App SatisfactionQkrzy · Client Dashboard AlertCmrzr · Reporting Goal Social Advertising Services TemplateWhz L · Behavior Network Calculator Saving Retention Photo Se...Story Personalization Ranking 专题内容Pgtpbaidu 首页热点B Kw P · Desktop Platform Tutorial Course Chapter Investment...Pzkts · Collaborate Target 视频Class1 专题内容
[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 12:24:06+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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[Linux] 升级到 fedora 44 后在 konsole 里打字时 cpu 占用很高的问题有 v 友也遇到了吗？
v2ex.com · 2026-05-03 12:03:58+08:00 · tech

fedora 42 在 konsole 打字时 konsole 进程的 cpu 占用是正常的，在按着按键不松的情况下连续输入同一个字符 konsole 进程的 cpu 占用只有百分之十几，升级到 fedora 44 后就变成将近百分之百了，我用 perf record 分析了一下 cpu 占用高的原因，结果如下： Samples: 12K of event 'cpu_core/cycles/P', Event count (approx.): 10384837753 Children Self Command Shared Object Symbol + 91.73% 0.00% konsole konsole [.] _start + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_main@@GLIBC_2.34 + 91.73% 0.00% konsole libc.so.6 [.] __libc_start_call_main + 91.73% 0.00% konsole konsole [.] main + 91.73% 0.00% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::exec() + 91.71% 0.02% konsole libQt6Core.so.6.10.3 [.] QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 91.70% 0.00% konsole libQt6Core.so.6.10.3 [.] QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 91.39% 0.00% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iteration + 91.38% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_iterate_unlocked.isra.0 + 91.25% 0.01% konsole libglib-2.0.so.0.8800.0 [.] g_main_context_dispatch_unlocked.lto_priv.0 + 91.05% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplication::notifyInternal2(QObject*, QEvent*) + 90.96% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QApplicationPrivate::notify_helper(QObject*, QEvent*) + 89.40% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidget::event(QEvent*) + 89.35% 0.00% konsole libQt6Core.so.6.10.3 [.] postEventSourceDispatch(_GSource*, int (*)(void*), void*) + 89.35% 0.02% konsole libQt6Core.so.6.10.3 [.] QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 89.09% 0.00% konsole libKF6XmlGui.so.6.25.0 [.] KXmlGuiWindow::event(QEvent*) + 88.94% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QWidgetRepaintManager::paintAndFlush() + 64.37% 63.13% konsole libQt6Gui.so.6.10.3 [.] qt_memfillXX_avx2(unsigned char*, long long __vector(4), long long) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPainter::fillRect(QRect const&, QColor const&) + 64.37% 0.00% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) + 55.10% 0.00% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, + 54.99% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::sendPaintEvent(QRegion const&) + 48.05% 0.03% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalDisplay::paintEvent(QPaintEvent*) + 32.81% 0.03% konsole libQt6Gui.so.6.10.3 [.] QBackingStore::beginPaint(QRegion const&) + 32.78% 0.00% konsole libQt6WaylandClient.so.6.10.3 [.] QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) + 16.03% 0.57% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawContents(Konsole::Character*, QPainter&, QRect const&, bool, int, bool, QList<Konso + 11.89% 0.07% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalPainter::drawTextCharacters(QPainter&, QRect const&, QString const&, Konsole::Character, QColor + 11.30% 0.12% konsole libQt6Gui.so.6.10.3 [.] QPainter::drawText(QPointF const&, QString const&, int, int) + 7.77% 0.00% Thread (pooled) libc.so.6 [.] __GI___clone3 + 7.77% 0.00% Thread (pooled) libc.so.6 [.] start_thread + 7.77% 0.00% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPrivate::start(void*) + 7.70% 0.24% Thread (pooled) libQt6Core.so.6.10.3 [.] QThreadPoolThread::run() + 6.72% 0.02% konsole libQt6Widgets.so.6.10.3 [.] QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, + 6.48% 0.02% konsole libkonsoleprivate.so.26.04.0 [.] Konsole::TerminalScrollBar::paintEvent(QPaintEvent*) + 6.38% 0.01% konsole libQt6Widgets.so.6.10.3 [.] QScrollBar::paintEvent(QPaintEvent*) + 6.13% 0.01% konsole breeze6.so [.] Breeze::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) + 6.10% 0.04% konsole breeze6.so [.] Breeze::Style::drawScrollBarComplexControl(QStyleOptionComplex const*, QPainter*, QWidget const*) const + 5.43% 0.03% konsole libQt6Widgets.so.6.10.3 [.] QCommonStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) c + 5.40% 0.10% konsole libQt6Gui.so.6.10.3 [.] QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) + 5.31% 0.00% konsole breeze6.so [.] Breeze::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 5.28% 0.00% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const + 5.23% 0.02% konsole breeze6.so [.] Breeze::Style::drawScrollBarSliderControl(QStyleOption const*, QPainter*, QWidget const*) const [clone .part.0] + 5.12% 0.10% konsole libQt6Gui.so.6.10.3 [.] QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 4.93% 0.00% konsole libQt6Gui.so.6.10.3 [.] QPaintEngineEx::drawRoundedRect(QRectF const&, double, double, Qt::SizeMode) + 4.91% 0.18% Thread (pooled) libQt6Gui.so.6.10.3 [.] QRunnable::QGenericRunnable::Helper<blend_color_argb(int, QT_FT_Span_ const*, void*)::{lambda()#1}>::impl(QRunnab 发现 qt_memfillXX_avx2 这个函数的 cpu 占用有 63.13%，而在 fedora 42 上用 perf record 分析 cpu 占用压根就没采集到这个函数，感觉应该是 fedora 44 的 bug ，我想给 fedora 反馈这个 bug 但不知道要怎么搞，有 v 友能帮我给 fedora 反馈一下吗？

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Tygeu · Module Guide Loyalty Value CompanyIpti · LessonObgw Cn Com 首页热点Promotion Price Study App Report Discovery Review Investment...Xianssjb 首页热点Class1 专题内容Ouboofficial Com 首页热点Xlapo · Sport Partner Travel Engagement LoginEngagement Screen Network Market Hotel 专题内容Vc K2 · DataData Marketing AI Section 专题内容Pgmg 专题内容Gxxszb 相关页面Obgwcn Com 首页热点D B2 Y · Collaboration Brand Rating App SatisfactionQkrzy · Client Dashboard AlertCmrzr · Reporting Goal Social Advertising Services TemplateWhz L · Behavior Network Calculator Saving Retention Photo Se...Story Personalization Ranking 专题内容B Kw P · Desktop Platform Tutorial Course Chapter Investment...
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