LeechCraft

Оно точно в какой-нибудь там своп не сваливается?

У меня что-то аналогичное на ноуте происходит, грешу на кривые настройки ядра с некорректным io-шедулером.

# swapon -s
Filename                                Type            Size    Used    Priority
/dev/sda4                               partition       10759168        0       0
/dev/zram0                              partition       6291452 1830764 10

Ну, у меня в своп тоже не уходит, а при eix-sync или конпеляции gcc (даже с /var/tmp/portage в tmpfs, что интересно) тоже подтормаживает.

Так что, может. даже и не в ФС дело, хз. Если лаги достаточно большие, этак с секунду, можно запустить lc из-под gdb, добиться лага, быстренько alt-tab-нуться в консоль и нажать Ctrl+C, и посмотреть, где оно висит.

трейсы при лагах >0.5с
1.

(gdb) bt
#0  0x00007ffff4af2c97 in ftruncate64 () from /lib64/libc.so.6
#1  0x00007ffff5d33090 in QFSFileEngine::setSize(long long) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5cd6dc7 in QFile::resize(long long) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff5d1fd5e in QConfFileSettingsPrivate::syncConfFile(int) () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff5d20221 in QConfFileSettingsPrivate::sync() () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5d16d32 in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff5d16d9d in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007ffff5439639 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() [clone .local.550] (this=0x55555b075f90)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:147
#8  0x00007ffff545d5cf in __base_dtor (this=0x7fffffffa778) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:558
#9  __base_dtor (this=0x7fffffffa770) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:813
#10 __base_dtor (this=0x7fffffffa770) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr.h:93
#11 LeechCraft::Util::BaseSettingsManager::event (this=0x7fffe05918c0 <LeechCraft::Azoth::XmlSettingsManager::Instance()::xsm>, e=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/xmlsettingsdialog/basesettingsmanager.cpp:155
#12 0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007ffff6b04c0b in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, 
    obj=0x7fffe05918c0 <LeechCraft::Azoth::XmlSettingsManager::Instance()::xsm>, event=0x7fffffffada0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#15 0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#16 0x00007ffff5d815bb in QObject::setProperty(char const*, QVariant const&) () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007fffe023ecb5 in LeechCraft::Azoth::(anonymous namespace)::SetExpanded (idx=..., expanded=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:934
#18 0x00007fffe030859b in LeechCraft::Azoth::MainWidget::qt_metacall (this=0x5555561f1c30, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffffffafc0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_mainwidget.cpp:178
#19 0x00007ffff5d7d5c3 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#20 0x00007ffff71626b2 in QTreeView::expanded(QModelIndex const&) () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007ffff716ec6b in QTreeView::expand(QModelIndex const&) () from /usr/lib64/qt4/libQtGui.so.4
#22 0x00007fffe0244463 in LeechCraft::Azoth::MainWidget::handleCLMode (this=0x5555561f1c30, mucMode=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:825
#23 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007ffff6af9092 in QAction::toggled(bool) () from /usr/lib64/qt4/libQtGui.so.4
#25 0x00007ffff6afa845 in QAction::setChecked(bool) () from /usr/lib64/qt4/libQtGui.so.4
#26 0x00007fffe02401f9 in LeechCraft::Azoth::MainWidget::handleEntryLostCurrent (this=0x5555561f1c30)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:779
#27 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#28 0x00007fffe0301c62 in LeechCraft::Azoth::ChatTabsManager::entryLostCurrent (this=this@entry=0x55555618dc80, _t1=0x55555a4175b0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattabsmanager.cpp:181
#29 0x00007fffe0303ed8 in LeechCraft::Azoth::ChatTabsManager::qt_static_metacall (_o=0x55555618dc80, _c=<optimized out>, _id=<optimized out>, _a=0x7fffffffb6f0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattabsmanager.cpp:79
#30 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#31 0x00007fffe0301872 in LeechCraft::Azoth::ChatTab::entryLostCurrent (this=<optimized out>, _t1=0x55555a4175b0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattab.cpp:327
#32 0x00007fffe0257b60 in LeechCraft::Azoth::ChatTab::TabLostCurrent (this=0x55555a35aa00)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/chattab.cpp:377
#33 0x00005555555f3c68 in LeechCraft::TabManager::handleCurrentChanged(int) (this=0x555555b3e2d0, index=3)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/tabmanager.cpp:318
#34 0x000055555562237f in qt_static_metacall (_o=0x555555b3e2d0, _c=<optimized out>, _id=13, _a=0x7fffffffb8f0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_tabmanager.cpp:90
#35 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
---Type <return> to continue, or q <return> to quit--- 
#36 0x0000555555591fc1 in LeechCraft::SeparateTabWidget::currentChanged(int) (this=<optimized out>, _t1=3)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_separatetabwidget.cpp:191
#37 0x00005555555e673b in LeechCraft::SeparateTabWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x555555b3f160, _c=<optimized out>, _id=10, 
    _a=0x7fffffffbab0) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_separatetabwidget.cpp:100
#38 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#39 0x00007ffff70376fe in QTabBar::currentChanged(int) () from /usr/lib64/qt4/libQtGui.so.4
#40 0x00007ffff703ded5 in QTabBar::mousePressEvent(QMouseEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#41 0x00005555555eb0bd in _ZN10LeechCraft14SeparateTabBar15mousePressEventEP11QMouseEvent.part.11 (event=0x7fffffffc4e0, this=0x555555b618c0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/separatetabbar.cpp:189
#42 LeechCraft::SeparateTabBar::mousePressEvent(QMouseEvent*) (this=0x555555b618c0, event=0x7fffffffc4e0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/separatetabbar.cpp:179
#43 0x00007ffff6b666fe in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#44 0x00007ffff7041372 in QTabBar::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#45 0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#46 0x00007ffff6b056ed in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#47 0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, obj=0x555555b618c0, event=0x7fffffffc4e0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#48 0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#49 0x00007ffff6b08aed in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib64/qt4/libQtGui.so.4
#50 0x00007ffff6b9a76e in QETWidget::translateMouseEvent(_XEvent const*) () from /usr/lib64/qt4/libQtGui.so.4
#51 0x00007ffff6b994e1 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#52 0x00007ffff6bc9212 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtGui.so.4
#53 0x00007ffff3381fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#54 0x00007ffff3382318 in ?? () from /usr/lib64/libglib-2.0.so.0
#55 0x00007ffff338240c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#56 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#57 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#58 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#59 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#60 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#61 0x000055555558eba5 in main (argc=1, argv=0x7fffffffd268) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40

(gdb) bt
#0  0x00007ffff2eecca9 in png_write_row () from /usr/lib64/libpng16.so.16
#1  0x00007ffff2f05eff in png_write_rows () from /usr/lib64/libpng16.so.16
#2  0x00007ffff6c2d256 in QPNGImageWriter::writeImage(QImage const&, int, QString const&, int, int) () from /usr/lib64/qt4/libQtGui.so.4
#3  0x00007ffff6c2deff in QPngHandler::write(QImage const&) () from /usr/lib64/qt4/libQtGui.so.4
#4  0x00007ffff6bf650a in QImageWriter::write(QImage const&) () from /usr/lib64/qt4/libQtGui.so.4
#5  0x00007ffff6be008e in operator<<(QDataStream&, QImage const&) () from /usr/lib64/qt4/libQtGui.so.4
#6  0x00007ffff6c0521b in operator<<(QDataStream&, QPixmap const&) () from /usr/lib64/qt4/libQtGui.so.4
#7  0x00007ffff6bce3d4 in QPixmapIconEngine::write(QDataStream&) const () from /usr/lib64/qt4/libQtGui.so.4
#8  0x00007ffff6bcdf13 in operator<<(QDataStream&, QIcon const&) () from /usr/lib64/qt4/libQtGui.so.4
#9  0x00007fffb90014c2 in LeechCraft::TabSessManager::Plugin::GetCurrentSession (this=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-tabsessmanager-9999/work/lc-tabsessmanager-9999/src/plugins/tabsessmanager/tabsessmanager.cpp:207
#10 0x00007fffb9005228 in saveDefaultSession (this=this@entry=0x555555df91d0)
    at /var/tmp/portage/app-leechcraft/lc-tabsessmanager-9999/work/lc-tabsessmanager-9999/src/plugins/tabsessmanager/tabsessmanager.cpp:523
#11 0x00007fffb9005928 in qt_static_metacall (_o=0x555555df91d0, _c=<optimized out>, _id=8, _a=0x7fffffffc640)
    at /var/tmp/portage/app-leechcraft/lc-tabsessmanager-9999/work/lc-tabsessmanager-9999_build/moc_tabsessmanager.cpp:80
#12 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#13 0x00007ffff5d880b3 in QSingleShotTimer::timerEvent(QTimerEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#14 0x00007ffff5d82dac in QObject::event(QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#15 0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#16 0x00007ffff6b04c0b in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#17 0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, obj=0x55555b4da070, event=0x7fffffffcda0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#18 0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#19 0x00007ffff5da0072 in QTimerInfoList::activateTimers() () from /usr/lib64/qt4/libQtCore.so.4
#20 0x00007ffff5d9b5cd in timerSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4
#21 0x00007ffff3381fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#22 0x00007ffff3382318 in ?? () from /usr/lib64/libglib-2.0.so.0
#23 0x00007ffff338240c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#24 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#25 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#26 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#27 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#28 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#29 0x000055555558eba5 in main (argc=1, argv=0x7fffffffd268) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40

(gdb) bt
#0  0x00007ffff4af2c97 in ftruncate64 () from /lib64/libc.so.6
#1  0x00007ffff5d33090 in QFSFileEngine::setSize(long long) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5cd6dc7 in QFile::resize(long long) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff5d1fd5e in QConfFileSettingsPrivate::syncConfFile(int) () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff5d20221 in QConfFileSettingsPrivate::sync() () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5d16d32 in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff5d16d9d in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007ffff5439639 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() [clone .local.550] (this=0x55555b31ba00)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:147
#8  0x00007ffff545d5cf in __base_dtor (this=0x7fffffffa778) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:558
#9  __base_dtor (this=0x7fffffffa770) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:813
#10 __base_dtor (this=0x7fffffffa770) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr.h:93
#11 LeechCraft::Util::BaseSettingsManager::event (this=0x7fffe05918c0 <LeechCraft::Azoth::XmlSettingsManager::Instance()::xsm>, e=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/xmlsettingsdialog/basesettingsmanager.cpp:155
#12 0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007ffff6b04c0b in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, 
    obj=0x7fffe05918c0 <LeechCraft::Azoth::XmlSettingsManager::Instance()::xsm>, event=0x7fffffffada0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#15 0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#16 0x00007ffff5d815bb in QObject::setProperty(char const*, QVariant const&) () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007fffe023ecb5 in LeechCraft::Azoth::(anonymous namespace)::SetExpanded (idx=..., expanded=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:934
#18 0x00007fffe030859b in LeechCraft::Azoth::MainWidget::qt_metacall (this=0x5555561f1c30, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffffffafc0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_mainwidget.cpp:178
#19 0x00007ffff5d7d5c3 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#20 0x00007ffff71626b2 in QTreeView::expanded(QModelIndex const&) () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007ffff716ec6b in QTreeView::expand(QModelIndex const&) () from /usr/lib64/qt4/libQtGui.so.4
#22 0x00007fffe0244463 in LeechCraft::Azoth::MainWidget::handleCLMode (this=0x5555561f1c30, mucMode=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:825
#23 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007ffff6af9092 in QAction::toggled(bool) () from /usr/lib64/qt4/libQtGui.so.4
#25 0x00007ffff6afa845 in QAction::setChecked(bool) () from /usr/lib64/qt4/libQtGui.so.4
#26 0x00007fffe02401f9 in LeechCraft::Azoth::MainWidget::handleEntryLostCurrent (this=0x5555561f1c30)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:779
#27 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#28 0x00007fffe0301c62 in LeechCraft::Azoth::ChatTabsManager::entryLostCurrent (this=this@entry=0x55555618dc80, _t1=0x55555a7772c0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattabsmanager.cpp:181
#29 0x00007fffe0303ed8 in LeechCraft::Azoth::ChatTabsManager::qt_static_metacall (_o=0x55555618dc80, _c=<optimized out>, _id=<optimized out>, _a=0x7fffffffb6f0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattabsmanager.cpp:79
#30 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#31 0x00007fffe0301872 in LeechCraft::Azoth::ChatTab::entryLostCurrent (this=<optimized out>, _t1=0x55555a7772c0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattab.cpp:327
#32 0x00007fffe0257b60 in LeechCraft::Azoth::ChatTab::TabLostCurrent (this=0x55555aac6150)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/chattab.cpp:377
#33 0x00005555555f3c68 in LeechCraft::TabManager::handleCurrentChanged(int) (this=0x555555b3e2d0, index=4)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/tabmanager.cpp:318
#34 0x000055555562237f in qt_static_metacall (_o=0x555555b3e2d0, _c=<optimized out>, _id=13, _a=0x7fffffffb8f0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_tabmanager.cpp:90
#35 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
---Type <return> to continue, or q <return> to quit---
#36 0x0000555555591fc1 in LeechCraft::SeparateTabWidget::currentChanged(int) (this=<optimized out>, _t1=4)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_separatetabwidget.cpp:191
#37 0x00005555555e673b in LeechCraft::SeparateTabWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x555555b3f160, _c=<optimized out>, _id=10, 
    _a=0x7fffffffbab0) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_separatetabwidget.cpp:100
#38 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#39 0x00007ffff70376fe in QTabBar::currentChanged(int) () from /usr/lib64/qt4/libQtGui.so.4
#40 0x00007ffff703ded5 in QTabBar::mousePressEvent(QMouseEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#41 0x00005555555eb0bd in _ZN10LeechCraft14SeparateTabBar15mousePressEventEP11QMouseEvent.part.11 (event=0x7fffffffc4e0, this=0x555555b618c0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/separatetabbar.cpp:189
#42 LeechCraft::SeparateTabBar::mousePressEvent(QMouseEvent*) (this=0x555555b618c0, event=0x7fffffffc4e0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/separatetabbar.cpp:179
#43 0x00007ffff6b666fe in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#44 0x00007ffff7041372 in QTabBar::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#45 0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#46 0x00007ffff6b056ed in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#47 0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, obj=0x555555b618c0, event=0x7fffffffc4e0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#48 0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#49 0x00007ffff6b08aed in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib64/qt4/libQtGui.so.4
#50 0x00007ffff6b9a76e in QETWidget::translateMouseEvent(_XEvent const*) () from /usr/lib64/qt4/libQtGui.so.4
#51 0x00007ffff6b994e1 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#52 0x00007ffff6bc9212 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtGui.so.4
#53 0x00007ffff3381fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#54 0x00007ffff3382318 in ?? () from /usr/lib64/libglib-2.0.so.0
#55 0x00007ffff338240c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#56 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#57 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#58 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#59 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#60 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#61 0x000055555558eba5 in main (argc=1, argv=0x7fffffffd268) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40

хм, теперь и мне видно.
при переключении на и из вкладки азота создается очень много потоков, например:

[New Thread 0x7fff1103d700 (LWP 27216)]
[New Thread 0x7fff137ff700 (LWP 27218)]
[New Thread 0x7fff1203f700 (LWP 27219)]
[New Thread 0x7fff1003b700 (LWP 27220)]
[New Thread 0x7fff2cc27700 (LWP 27221)]
[New Thread 0x7fff1b530700 (LWP 27222)]
[Thread 0x7fff1103d700 (LWP 27216) exited]
[New Thread 0x7fff1103d700 (LWP 27225)]
[New Thread 0x7fff12ffe700 (LWP 27227)]
[New Thread 0x7fff1183e700 (LWP 27228)]
[New Thread 0x7fff1083c700 (LWP 27229)]
[Thread 0x7fff2cc27700 (LWP 27221) exited]
[New Thread 0x7fff2cc27700 (LWP 27230)]
[New Thread 0x7fff0f83a700 (LWP 27231)]
[New Thread 0x7fff0f039700 (LWP 27232)]
[Thread 0x7fff1b530700 (LWP 27222) exited]
[New Thread 0x7fff1b530700 (LWP 27233)]
[New Thread 0x7fff0e838700 (LWP 27234)]
[New Thread 0x7fff0e037700 (LWP 27235)]
[New Thread 0x7fff0d836700 (LWP 27236)]
[New Thread 0x7fff0d035700 (LWP 27237)]
[Thread 0x7fff1003b700 (LWP 27220) exited]
[New Thread 0x7fff0c834700 (LWP 27238)]
[New Thread 0x7fff1003b700 (LWP 27239)]
[New Thread 0x7fff0c033700 (LWP 27241)]
[New Thread 0x7fff0b832700 (LWP 27242)]
[New Thread 0x7fff0b031700 (LWP 27244)]
[New Thread 0x7fff0a830700 (LWP 27246)]
[New Thread 0x7fff0a02f700 (LWP 27247)]
[New Thread 0x7fff0982e700 (LWP 27248)]
[New Thread 0x7fff0902d700 (LWP 27249)]
[New Thread 0x7fff0882c700 (LWP 27250)]
[New Thread 0x7fff07439700 (LWP 27251)]
[New Thread 0x7fff06c38700 (LWP 27252)]
[New Thread 0x7fff06437700 (LWP 27254)]
[New Thread 0x7fff05c36700 (LWP 27257)]
[New Thread 0x7fff05435700 (LWP 27258)]
[New Thread 0x7fff04c34700 (LWP 27260)]
[Thread 0x7fff06437700 (LWP 27254) exited]
[Thread 0x7fff0902d700 (LWP 27249) exited]
[Thread 0x7fff0a830700 (LWP 27246) exited]
[Thread 0x7fff05c36700 (LWP 27257) exited]
[Thread 0x7fff06c38700 (LWP 27252) exited]
[Thread 0x7fff04c34700 (LWP 27260) exited]
[Thread 0x7fff05435700 (LWP 27258) exited]
[Thread 0x7fff0a02f700 (LWP 27247) exited]
[Thread 0x7fff0982e700 (LWP 27248) exited]
[Thread 0x7fff0882c700 (LWP 27250) exited]
[Thread 0x7fff07439700 (LWP 27251) exited]
[Thread 0x7fff0b031700 (LWP 27244) exited]
[Thread 0x7fff0b832700 (LWP 27242) exited]
[Thread 0x7fff0d035700 (LWP 27237) exited]
[Thread 0x7fff0c834700 (LWP 27238) exited]
[Thread 0x7fff0c033700 (LWP 27241) exited]
[Thread 0x7fff1003b700 (LWP 27239) exited]
[Thread 0x7fff0e838700 (LWP 27234) exited]
[Thread 0x7fff0d836700 (LWP 27236) exited]
[Thread 0x7fff1b530700 (LWP 27233) exited]
[Thread 0x7fff0e037700 (LWP 27235) exited]
[Thread 0x7fff2cc27700 (LWP 27230) exited]
[Thread 0x7fff0f039700 (LWP 27232) exited]
[Thread 0x7fff1183e700 (LWP 27228) exited]
[Thread 0x7fff1083c700 (LWP 27229) exited]
[Thread 0x7fff0f83a700 (LWP 27231) exited]
[Thread 0x7fff1103d700 (LWP 27225) exited]
[Thread 0x7fff12ffe700 (LWP 27227) exited]
[Thread 0x7fff137ff700 (LWP 27218) exited]
[Thread 0x7fff1203f700 (LWP 27219) exited]

ну торадиционно трейс

(gdb) bt
#0  0x00007ffff45e4d90 in __nptl_create_event () from /lib64/libpthread.so.0
#1  0x00007ffff45e67b3 in pthread_create@@GLIBC_2.2.5 () from /lib64/libpthread.so.0
#2  0x00007ffff4e7f258 in std::thread::_M_start_thread(std::shared_ptr<std::thread::_Impl_base>) () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/libstdc++.so.6
#3  0x00007ffff54376e4 in std::thread::__base_ctor (this=0x7fffffffa6e0, __f=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/thread:133
#4  0x00007ffff545788b in LeechCraft::Util::BaseSettingsManager::event(QEvent*) (this=0x7fffd94c48c0 <LeechCraft::Azoth::XmlSettingsManager::Instance()::xsm>, 
    e=<optimized out>) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/xmlsettingsdialog/basesettingsmanager.cpp:160
#5  0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#6  0x00007ffff6b04c0b in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#7  0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, 
    obj=0x7fffd94c48c0 <LeechCraft::Azoth::XmlSettingsManager::Instance()::xsm>, event=0x7fffffffad90)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#8  0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#9  0x00007ffff5d815bb in QObject::setProperty(char const*, QVariant const&) () from /usr/lib64/qt4/libQtCore.so.4
#10 0x00007fffd9171cb5 in LeechCraft::Azoth::(anonymous namespace)::SetExpanded (idx=..., expanded=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:934
#11 0x00007fffd923b59b in LeechCraft::Azoth::MainWidget::qt_metacall (this=0x5555561fa530, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffffffafb0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_mainwidget.cpp:178
#12 0x00007ffff5d7d5c3 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#13 0x00007ffff71626b2 in QTreeView::expanded(QModelIndex const&) () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00007ffff716ec6b in QTreeView::expand(QModelIndex const&) () from /usr/lib64/qt4/libQtGui.so.4
#15 0x00007fffd9177525 in LeechCraft::Azoth::MainWidget::handleCLMode (this=0x5555561fa530, mucMode=<optimized out>)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:832
#16 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007ffff6af9092 in QAction::toggled(bool) () from /usr/lib64/qt4/libQtGui.so.4
#18 0x00007ffff6afa845 in QAction::setChecked(bool) () from /usr/lib64/qt4/libQtGui.so.4
#19 0x00007fffd91731f9 in LeechCraft::Azoth::MainWidget::handleEntryLostCurrent (this=0x5555561fa530)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/mainwidget.cpp:779
#20 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#21 0x00007fffd9234c62 in LeechCraft::Azoth::ChatTabsManager::entryLostCurrent (this=this@entry=0x555556195620, _t1=0x55555fddf3b0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattabsmanager.cpp:181
#22 0x00007fffd9236ed8 in LeechCraft::Azoth::ChatTabsManager::qt_static_metacall (_o=0x555556195620, _c=<optimized out>, _id=<optimized out>, _a=0x7fffffffb6e0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattabsmanager.cpp:79
#23 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007fffd9234872 in LeechCraft::Azoth::ChatTab::entryLostCurrent (this=<optimized out>, _t1=0x55555fddf3b0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999_build/moc_chattab.cpp:327
#25 0x00007fffd918ab60 in LeechCraft::Azoth::ChatTab::TabLostCurrent (this=0x55555fdfbcf0)
    at /var/tmp/portage/app-leechcraft/lc-azoth-9999/work/lc-azoth-9999/src/plugins/azoth/chattab.cpp:377
#26 0x00005555555f3c68 in LeechCraft::TabManager::handleCurrentChanged(int) (this=0x555555cd33c0, index=2)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/tabmanager.cpp:318
#27 0x000055555562237f in qt_static_metacall (_o=0x555555cd33c0, _c=<optimized out>, _id=13, _a=0x7fffffffb8e0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_tabmanager.cpp:90
#28 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#29 0x0000555555591fc1 in LeechCraft::SeparateTabWidget::currentChanged(int) (this=<optimized out>, _t1=2)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_separatetabwidget.cpp:191
#30 0x00005555555e673b in LeechCraft::SeparateTabWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x555555bc4d50, _c=<optimized out>, _id=10, 
    _a=0x7fffffffbaa0) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999_build/core/moc_separatetabwidget.cpp:100
#31 0x00007ffff5d7d35f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/qt4/libQtCore.so.4
#32 0x00007ffff70376fe in QTabBar::currentChanged(int) () from /usr/lib64/qt4/libQtGui.so.4
#33 0x00007ffff703ded5 in QTabBar::mousePressEvent(QMouseEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#34 0x00005555555eb0bd in _ZN10LeechCraft14SeparateTabBar15mousePressEventEP11QMouseEvent.part.11 (event=0x7fffffffc4d0, this=0x555555b25610)
---Type <return> to continue, or q <return> to quit---
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/separatetabbar.cpp:189
#35 LeechCraft::SeparateTabBar::mousePressEvent(QMouseEvent*) (this=0x555555b25610, event=0x7fffffffc4d0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/separatetabbar.cpp:179
#36 0x00007ffff6b666fe in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#37 0x00007ffff7041372 in QTabBar::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#38 0x00007ffff6b01b55 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#39 0x00007ffff6b056ed in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#40 0x00005555555faab5 in LeechCraft::Application::notify(QObject*, QEvent*) (this=<optimized out>, obj=0x555555b25610, event=0x7fffffffc4d0)
    at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/application.cpp:323
#41 0x00007ffff5d6353e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#42 0x00007ffff6b08aed in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib64/qt4/libQtGui.so.4
#43 0x00007ffff6b9a76e in QETWidget::translateMouseEvent(_XEvent const*) () from /usr/lib64/qt4/libQtGui.so.4
#44 0x00007ffff6b994e1 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#45 0x00007ffff6bc9212 in x11EventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtGui.so.4
#46 0x00007ffff3380fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#47 0x00007ffff3381318 in ?? () from /usr/lib64/libglib-2.0.so.0
#48 0x00007ffff338140c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#49 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#50 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#51 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#52 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#53 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#54 0x000055555558eba5 in main (argc=1, argv=0x7fffffffd258) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40

Судя по тому, что потоки все завершаются, похоже, сильно потом, всё упирается в IO. почему при этом тормозит UI, я не знаю :( Попробую ещё кое-что, stay tuned.

Нуждается в более тщательном тестировании. Завтра добью.
По предварительным тестам, субъективно вроде стало шустрее.

хм... ок, определенно стало чуть лучше, в смысле, в отсутствии дополнительной нагрузки на CPU и IO переключение вкладок азота занимает 0.3<=(0.43;0.55)<=0.7с на powersave. Для сравнения переключение в аналогичных условиях между вкладками пошуку занимает в среднем 0.1-0.2с, а в других браузерах и того меньше (chrome, fx, qupzilla).

(gdb) bt
#0  0x00007ffff5d222de in QMap<QSettingsKey, QVariant>::detach_helper() () from /usr/lib64/qt4/libQtCore.so.4
#1  0x00007ffff5d181b6 in QConfFile::mergedKeyMap() const () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5d1fa2d in QConfFileSettingsPrivate::syncConfFile(int) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff5d20221 in QConfFileSettingsPrivate::sync() () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff5d16d32 in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5d16d9d in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff5442942 in _M_release (this=0x5555623c9980) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:147
#7  __base_dtor (this=0x5555610576d8) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:558
#8  __base_dtor (this=0x5555610576d0) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:813
#9  __base_dtor (this=0x5555610576d0) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr.h:93
#10 qMetaTypeDeleteHelper<std::shared_ptr<QSettings> >(std::shared_ptr<QSettings>*) [clone .local.676] (t=0x5555610576d0) at /usr/include/qt4/QtCore/qmetatype.h:134
#11 0x00007ffff5d71af2 in QMetaType::destroy(int, void*) () from /usr/lib64/qt4/libQtCore.so.4
#12 0x00007ffff5d779bc in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib64/qt4/libQtCore.so.4
#13 0x00007ffff5d77a4d in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib64/qt4/libQtCore.so.4
#14 0x00007ffff5d67422 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/qt4/libQtCore.so.4
#15 0x00007ffff5d9be37 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4
#16 0x00007ffff3380fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#17 0x00007ffff3381318 in ?? () from /usr/lib64/libglib-2.0.so.0
#18 0x00007ffff338140c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#19 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#20 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#22 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#23 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#24 0x000055555558ea95 in main (argc=1, argv=0x7fffffffd268) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40

(gdb) bt
#0  0x00007ffff5d16813 in QSettingsPrivate::iniEscapedString(QString const&, QByteArray&, QTextCodec*) () from /usr/lib64/qt4/libQtCore.so.4
#1  0x00007ffff5d16907 in QSettingsPrivate::iniEscapedStringList(QStringList const&, QByteArray&, QTextCodec*) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5d1ef55 in QConfFileSettingsPrivate::writeIniFile(QIODevice&, QMap<QSettingsKey, QVariant> const&) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff5d2004c in QConfFileSettingsPrivate::syncConfFile(int) () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff5d20221 in QConfFileSettingsPrivate::sync() () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5d16d32 in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff5d16d9d in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007ffff5442942 in _M_release (this=0x555560bc8290) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:147
#8  __base_dtor (this=0x55555aff3bf8) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:558
#9  __base_dtor (this=0x55555aff3bf0) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:813
#10 __base_dtor (this=0x55555aff3bf0) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr.h:93
#11 qMetaTypeDeleteHelper<std::shared_ptr<QSettings> >(std::shared_ptr<QSettings>*) [clone .local.676] (t=0x55555aff3bf0) at /usr/include/qt4/QtCore/qmetatype.h:134
#12 0x00007ffff5d71af2 in QMetaType::destroy(int, void*) () from /usr/lib64/qt4/libQtCore.so.4
#13 0x00007ffff5d779bc in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib64/qt4/libQtCore.so.4
#14 0x00007ffff5d77a4d in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib64/qt4/libQtCore.so.4
#15 0x00007ffff5d67422 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/qt4/libQtCore.so.4
#16 0x00007ffff5d9be37 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007ffff3380fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#18 0x00007ffff3381318 in ?? () from /usr/lib64/libglib-2.0.so.0
#19 0x00007ffff338140c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#20 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#21 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#22 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#23 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#25 0x000055555558ea95 in main (argc=1, argv=0x7fffffffd268) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40

(gdb) bt
#0  0x00007ffff5c3c215 in QByteArray::toLongLong(bool*, int) const () from /usr/lib64/qt4/libQtCore.so.4
#1  0x00007ffff5c3c31d in QByteArray::toInt(bool*, int) const () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5d16299 in QSettingsPrivate::iniUnescapedKey(QByteArray const&, int, int, QString&) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff5d1c961 in QConfFileSettingsPrivate::readIniSection(QSettingsKey const&, QByteArray const&, QMap<QSettingsKey, QVariant>*, QTextCodec*) ()
   from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff5d1d80f in QConfFileSettingsPrivate::ensureAllSectionsParsed(QConfFile*) const () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5d1fa1d in QConfFileSettingsPrivate::syncConfFile(int) () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff5d20221 in QConfFileSettingsPrivate::sync() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007ffff5d16d32 in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#8  0x00007ffff5d16d9d in QSettings::~QSettings() () from /usr/lib64/qt4/libQtCore.so.4
#9  0x00007ffff5442942 in _M_release (this=0x55555b243f20) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:147
#10 __base_dtor (this=0x55555e6532d8) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:558
#11 __base_dtor (this=0x55555e6532d0) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr_base.h:813
#12 __base_dtor (this=0x55555e6532d0) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/include/g++-v4/bits/shared_ptr.h:93
#13 qMetaTypeDeleteHelper<std::shared_ptr<QSettings> >(std::shared_ptr<QSettings>*) [clone .local.676] (t=0x55555e6532d0) at /usr/include/qt4/QtCore/qmetatype.h:134
#14 0x00007ffff5d71af2 in QMetaType::destroy(int, void*) () from /usr/lib64/qt4/libQtCore.so.4
#15 0x00007ffff5d779bc in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib64/qt4/libQtCore.so.4
#16 0x00007ffff5d77a4d in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib64/qt4/libQtCore.so.4
#17 0x00007ffff5d67422 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/qt4/libQtCore.so.4
#18 0x00007ffff5d9be37 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4
#19 0x00007ffff3380fb5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#20 0x00007ffff3381318 in ?? () from /usr/lib64/libglib-2.0.so.0
#21 0x00007ffff338140c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#22 0x00007ffff5d9c026 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#23 0x00007ffff6bc9356 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#24 0x00007ffff5d6142f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#25 0x00007ffff5d617a8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#26 0x00007ffff5d68638 in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#27 0x000055555558ea95 in main (argc=1, argv=0x7fffffffd268) at /var/tmp/portage/app-leechcraft/lc-core-9999/work/lc-core-9999/src/core/main.cpp:40