https://bugs.kde.org/show_bug.cgi?id=364061
Bug ID: 364061 Summary: plasmashell using 100% CPU time Product: plasmashell Version: 5.5.5 Platform: Fedora RPMs OS: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: general Assignee: k...@davidedmundson.co.uk Reporter: c...@redhat.com CC: bhus...@gmail.com, plasma-b...@kde.org Randomly plasmashell will start using 100% CPU time, causing noticeable performance and usability issues (such as the mouse skipping around). Restarting plasmashell tends to fix the issue until it happens again. I don't use any "3rd-party" widgets, only those that come with plasma-workstation, on the default panel. I do, however, have two extra panels, which provide a simple task manager for my 2nd and 3rd displays. Reproducible: Sometimes Steps to Reproduce: Issue seems to occur randomly Actual Results: Plasmashell hordes CPU time Expected Results: Plasmashell shouldn't be hording CPU time Backtrace taken while it was happening: (gdb) thread apply all bt Thread 8 (Thread 0x7f00e8596700 (LWP 3412)): #0 0x00000037952f757d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000003798e0a182 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f00e8595bc0) at /usr/include/bits/poll2.h:46 #2 0x0000003798e0a182 in _xcb_conn_wait (c=c@entry=0x1444760, cond=cond@entry=0x14447a0, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:459 #3 0x0000003798e0bc77 in xcb_wait_for_event (c=0x1444760) at xcb_in.c:648 #4 0x00007f00e9493da9 in QXcbEventReader::run() (this=0x1452cb0) at qxcbconnection.cpp:1255 #5 0x0000003a65ea33de in QThreadPrivate::start(void*) (arg=0x1452cb0) at thread/qthread_unix.cpp:331 #6 0x0000003795a07555 in start_thread (arg=0x7f00e8596700) at pthread_create.c:333 #7 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 7 (Thread 0x7f00e602f700 (LWP 3539)): #0 0x00000037952f757d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000003797649dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f00d8003070, timeout=<optimized out>, context=0x7f00d8000990) at gmain.c:4103 #2 0x0000003797649dbc in g_main_context_iterate (context=context@entry=0x7f00d8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803 #3 0x0000003797649ecc in g_main_context_iteration (context=0x7f00d8000990, may_block=may_block@entry=1) at gmain.c:3869 #4 0x0000003a660daeaf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f00d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #5 0x0000003a66081eca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f00e602eca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x0000003a65e9e434 in QThread::exec() (this=this@entry=0x1534b60) at thread/qthread.cpp:503 #7 0x0000003a730d99b5 in QQmlThreadPrivate::run() (this=0x1534b60) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141 #8 0x0000003a65ea33de in QThreadPrivate::start(void*) (arg=0x1534b60) at thread/qthread_unix.cpp:331 #9 0x0000003795a07555 in start_thread (arg=0x7f00e602f700) at pthread_create.c:333 #10 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 6 (Thread 0x7f00dcc9c700 (LWP 3556)): #0 0x0000003795a0c540 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f00dfa066da in radeon_drm_cs_emit_ioctl (mtx=0x1661120, cond=0x1661148) at ../../../../../include/c11/threads_posix.h:154 #2 0x00007f00dfa066da in radeon_drm_cs_emit_ioctl (sema=0x1661120) at ../../../../../src/gallium/auxiliary/os/os_thread.h:259 #3 0x00007f00dfa066da in radeon_drm_cs_emit_ioctl (param=param@entry=0x1660df0) at radeon_drm_winsys.c:636 #4 0x00007f00dfa05e37 in impl_thrd_routine (p=<optimized out>) at ../../../../../include/c11/threads_posix.h:87 #5 0x0000003795a07555 in start_thread (arg=0x7f00dcc9c700) at pthread_create.c:333 #6 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7f00d4a2c700 (LWP 3563)): #0 0x00000037952f757d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000003797649dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f00d0002e70, timeout=<optimized out>, context=0x7f00d0000990) at gmain.c:4103 #2 0x0000003797649dbc in g_main_context_iterate (context=context@entry=0x7f00d0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803 #3 0x0000003797649ecc in g_main_context_iteration (context=0x7f00d0000990, may_block=may_block@entry=1) at gmain.c:3869 #4 0x0000003a660daeaf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f00d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #5 0x0000003a66081eca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f00d4a2bca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x0000003a65e9e434 in QThread::exec() (this=this@entry=0x172a110) at thread/qthread.cpp:503 #7 0x0000003a730d99b5 in QQmlThreadPrivate::run() (this=0x172a110) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141 #8 0x0000003a65ea33de in QThreadPrivate::start(void*) (arg=0x172a110) at thread/qthread_unix.cpp:331 #9 0x0000003795a07555 in start_thread (arg=0x7f00d4a2c700) at pthread_create.c:333 #10 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7f00cf059700 (LWP 3573)): #0 0x00000037952f757d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000003797649dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f00c8003070, timeout=<optimized out>, context=0x7f00c8000990) at gmain.c:4103 #2 0x0000003797649dbc in g_main_context_iterate (context=context@entry=0x7f00c8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803 #3 0x0000003797649ecc in g_main_context_iteration (context=0x7f00c8000990, may_block=may_block@entry=1) at gmain.c:3869 #4 0x0000003a660daeaf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f00c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #5 0x0000003a66081eca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f00cf058ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x0000003a65e9e434 in QThread::exec() (this=this@entry=0x17c83f0) at thread/qthread.cpp:503 #7 0x0000003a730d99b5 in QQmlThreadPrivate::run() (this=0x17c83f0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141 #8 0x0000003a65ea33de in QThreadPrivate::start(void*) (arg=0x17c83f0) at thread/qthread_unix.cpp:331 #9 0x0000003795a07555 in start_thread (arg=0x7f00cf059700) at pthread_create.c:333 #10 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f00cd6f4700 (LWP 3582)): #0 0x0000003795a0c540 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000003a75f85514 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x3a7626de80) at /usr/src/debug/qtscript-opensource-src-5.5.1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359 #2 0x0000003a75f85559 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at /usr/src/debug/qtscript-opensource-src-5.5.1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464 #3 0x0000003795a07555 in start_thread (arg=0x7f00cd6f4700) at pthread_create.c:333 #4 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f0046fbb700 (LWP 3748)): #0 0x00000037952f757d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000003797649dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f0040003120, timeout=<optimized out>, context=0x7f0040000990) at gmain.c:4103 #2 0x0000003797649dbc in g_main_context_iterate (context=context@entry=0x7f0040000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803 #3 0x0000003797649ecc in g_main_context_iteration (context=0x7f0040000990, may_block=may_block@entry=1) at gmain.c:3869 #4 0x0000003a660daecb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f00400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420 #5 0x0000003a66081eca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0046fbac50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x0000003a65e9e434 in QThread::exec() (this=this@entry=0x1af20d0) at thread/qthread.cpp:503 #7 0x0000003a73ef68d6 in QQuickPixmapReader::run() (this=0x1af20d0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/quick/util/qquickpixmapcache.cpp:760 #8 0x0000003a65ea33de in QThreadPrivate::start(void*) (arg=0x1af20d0) at thread/qthread_unix.cpp:331 #9 0x0000003795a07555 in start_thread (arg=0x7f0046fbb700) at pthread_create.c:333 #10 0x0000003795302ded in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f00f0173900 (LWP 3410)): #0 0x00000037952f757d in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000003797649dbc in g_main_context_iterate (priority=2147483647, n_fds=9, fds=0x28758c0, timeout=<optimized out>, context=0x7f00e00016f0) at gmain.c:4103 #2 0x0000003797649dbc in g_main_context_iterate (context=context@entry=0x7f00e00016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803 #3 0x0000003797649ecc in g_main_context_iteration (context=0x7f00e00016f0, may_block=may_block@entry=1) at gmain.c:3869 #4 0x0000003a660daeaf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x149a000, flags=...) at kernel/qeventdispatcher_glib.cpp:418 #5 0x0000003a66081eca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffe9e02d2d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204 #6 0x0000003a66089fac in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229 #7 0x0000003a674e756c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1527 #8 0x0000003a68d50855 in QApplication::exec() () at kernel/qapplication.cpp:2976 #9 0x00000000004314da in main(int, char**) (argc=2, argv=<optimized out>) at ../../shell/main.cpp:181 -- You are receiving this mail because: You are watching all bug changes.