https://bugs.kde.org/show_bug.cgi?id=422336
--- Comment #11 from Martin Steigerwald <mar...@lichtvoll.de> --- (In reply to Martin Steigerwald from comment #10) > Marc, thank you a lot for your analysis in comment #2. I just noticed it > now. I bet it can be valuable help for the developers to pinpoint the issue. I can confirm your finding with perf top: Samples Overhead Shared Object Symbol 65,66% libQt5Core.so.5.12.5 [.] QMetaObjectPrivate::disconnect 5,87% [kernel] [k] 0xffffffff81737191 2,07% libQt5Core.so.5.12.5 [.] QMetaObject::activate 1,58% i965_dri.so [.] linear_to_ytiled_faster 0,66% libKF5MessageList.so.5.14.1.abi1 [.] MessageList::Core::Item::parent 0,59% libQt5WebEngineCore.so.5.12.5 [.] exec_ops 0,48% libQt5Gui.so.5.12.5 [.] qt_alphamapblit_argb32 0,39% libKF5MessageList.so.5.14.1.abi1 [.] MessageList::Core::Item::indexOfChildItem 0,35% libQt5Gui.so.5.12.5 [.] qt_memfill32 0,31% libKF5MessageList.so.5.14.1.abi1 [.] MessageList::Core::Item::type 0,25% libc-2.30.so [.] _int_malloc Samples Overhead Shared Object Symbol 72,54% libQt5Core.so.5.12.5 [.] QMetaObjectPrivate::disconnect 4,87% [kernel] [k] 0xffffffff81737191 1,72% libQt5Core.so.5.12.5 [.] QMetaObject::activate 0,74% libKF5MessageList.so.5.14.1.abi1 [.] MessageList::Core::Item::parent 0,56% libKF5MessageList.so.5.14.1.abi1 [.] MessageList::Core::Item::indexOfChildItem 0,52% perf_5.6 [.] 0x000000000033fe21 0,48% perf_5.6 [.] 0x0000000000275703 0,36% i965_dri.so [.] linear_to_ytiled_faster 0,30% libQt5Core.so.5.12.5 [.] QAbstractItemModelPrivate::rowsAboutToBeInserted 0,30% libQt5Core.so.5.12.5 [.] QAbstractItemModelPrivate::rowsAboutToBeRemoved 0,23% libQt5Core.so.5.12.5 [.] bm_find -- You are receiving this mail because: You are watching all bug changes.