[Bug 707313] Re: [natty] virt-manager use 100% CPU
This bug may have been fixed in Natty, but it's back in Oneiric. I've opened a new bug: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/874474 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pygtk/+bug/707313/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
I think the poll is a red herring...the new version of virt-manager actually does have a 1000ms timeout when I strace it. So, oddly the issue doesn't pop up with virt-manager --debug...and looking though the code, when --debug is not used, it calls this: def drop_tty(): # We fork and setsid so that we drop the controlling # tty. This prevents libvirt's SSH tunnels from prompting # for user input if SSH keys/agent aren't configured. if os.fork() != 0: os._exit(0) os.setsid() As soon as it forks, CPU goes up to 100%. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
Whoops, I typoed the bug number in the changelog...anyway: This bug was fixed in the package virt-manager - 0.8.6-1ubuntu2 --- virt-manager (0.8.6-1ubuntu2) natty; urgency=low * debian/patches/fork_before_using_gconf.patch: fork earlier to resolve cpu usage issue and appindicator issue. (LP: #720724, LP: #707303) -- Marc Deslauriers marc.deslauri...@ubuntu.com Thu, 24 Feb 2011 21:15:18 -0500 ** Changed in: virt-manager (Ubuntu Natty) Status: Confirmed = Fix Released ** Changed in: pygtk (Ubuntu Natty) Status: New = Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
** Changed in: virt-manager (Ubuntu Natty) Milestone: None = natty-alpha-3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
I believe this is a dupe of: https://bugs.launchpad.net/ubuntu/+source/pygtk/+bug/664920 Which has more information. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
I don't believe it is the same issue. I rebuilt pygtk packages with the patch in gnome bug #640738, and although they fix the issue in that bug, they don't seem to fix the issue with virt-manager. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
Oops, sorry about the noise, the symptoms and location were extremely similar: python + gtk + main loop + poll = 100% cpu! Maybe the cause is similar too? (poll misused?) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
I think this may be related to pygtk... note the backtrace (repeated many times, always stuck at this point: 0x7fe7811dc4b3 in __poll (fds=value optimized out, nfds=value optimized out, timeout=value optimized out) at ../sysdeps/unix/sysv/linux/poll.c:87 87 in ../sysdeps/unix/sysv/linux/poll.c (gdb) bt #0 0x7fe7811dc4b3 in __poll (fds=value optimized out, nfds=value optimized out, timeout=value optimized out) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x7fe77e6f7260 in g_main_context_poll (context=0x2742530, block=value optimized out, dispatch=1, self=value optimized out) at /build/buildd/glib2.0-2.27.91/glib/gmain.c:3404 #2 g_main_context_iterate (context=0x2742530, block=value optimized out, dispatch=1, self=value optimized out) at /build/buildd/glib2.0-2.27.91/glib/gmain.c:3086 #3 0x7fe77e6f7b3a in g_main_loop_run (loop=0x30f1490) at /build/buildd/glib2.0-2.27.91/glib/gmain.c:3299 #4 0x7fe77ce0adf7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0 #5 0x7fe77d4e8f04 in ?? () from /usr/lib/pymodules/python2.7/gtk-2.0/gtk/_gtk.so #6 0x004abfc0 in call_function (f=value optimized out, throwflag=value optimized out) at ../Python/ceval.c:3996 #7 PyEval_EvalFrameEx (f=value optimized out, throwflag=value optimized out) at ../Python/ceval.c:2665 #8 0x004acffd in fast_function (f=value optimized out, throwflag=value optimized out) at ../Python/ceval.c:4098 #9 call_function (f=value optimized out, throwflag=value optimized out) at ../Python/ceval.c:4033 #10 PyEval_EvalFrameEx (f=value optimized out, throwflag=value optimized out) at ../Python/ceval.c:2665 #11 0x004ae006 in PyEval_EvalCodeEx (co=0x2136630, globals=value optimized out, locals=value optimized out, args=value optimized out, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3252 #12 0x004ae112 in PyEval_EvalCode (co=value optimized out, globals=value optimized out, locals=value optimized out) at ../Python/ceval.c:666 #13 0x004d35a4 in run_mod (fp=0x217da70, filename=value optimized out, closeit=1, flags=0x7fff58544e80) at ../Python/pythonrun.c:1346 #14 PyRun_FileExFlags (fp=0x217da70, filename=value optimized out, closeit=1, flags=0x7fff58544e80) at ../Python/pythonrun.c:1332 #15 PyRun_SimpleFileExFlags (fp=0x217da70, filename=value optimized out, closeit=1, flags=0x7fff58544e80) at ../Python/pythonrun.c:936 #16 0x00418ce9 in Py_Main (argc=value optimized out, argv=value optimized out) at ../Modules/main.c:599 #17 0x7fe781127d1e in __libc_start_main (main=0x417ff0 main, argc=2, ubp_av=0x7fff58544fa8, init=value optimized out, fini=value optimized out, rtld_fini=value optimized out, stack_end=0x7fff58544f98) at libc-start.c:226 #18 0x00417f29 in _start () python-gtk2: Installed: 2.22.0-0ubuntu1 Candidate: 2.22.0-0ubuntu1 Version table: *** 2.22.0-0ubuntu1 0 500 http://us.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages 100 /var/lib/dpkg/status ** Also affects: pygtk (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
** Also affects: virt-manager (Ubuntu Natty) Importance: High Status: Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
** Changed in: virt-manager (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/707313 Title: [natty] virt-manager use 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 707313] Re: [natty] virt-manager use 100% CPU
Marking Confirmed, I have experienced this too, and it seemed to start
only when I updated about 24 hours ago.
Seems to be polling the sockets for each VM defined over and over
without a 0 millisecond timeout. According to man 2 poll, a negative
timeout is infinite, but it does not state that 0 is, so I can only
assume that this is an error in some library call that should be
specifying a timeout.
$ sudo strace -p 20110
Process 20110 attached - interrupt to quit
restart_syscall(... resuming interrupted call ...) = 1
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
recvfrom(28,
\0\0\0\4\0\240\0\363\0\20\0\v\0\0\0\7P\1\1\0\0\0\250\250\250\t\302g\17\0\0...,
4096, 0, NULL, NULL) = 131
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=14,
events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=17,
events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=22, events=POLLIN},
{fd=19, events=POLLIN}, {fd=27, events=POLLIN}, {fd=26, events=POLLIN}, {fd=23,
events=POLLIN}, {fd=18, events=POLLIN}], 12, 0) = 0 (Timeout)
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
poll([{fd=4, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=4, revents=POLLOUT}])
writev(4,
[{H\2\266\0uF`\5\207+`\5\20\0\v\0\240\0\363\0\0\30`\5\250\250\250\377\250\250\250\377...,
728}, {NULL, 0}, {, 0}], 3) = 728
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=14,
events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=17,
events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=22, events=POLLIN},
{fd=19, events=POLLIN}, {fd=27, events=POLLIN}, {fd=26, events=POLLIN}, {fd=23,
events=POLLIN}, {fd=18, events=POLLIN}], 12, 0) = 0 (Timeout)
poll([{fd=4, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=4, revents=POLLOUT}])
writev(4, [{5\30\4\0v\335`\5%+`\5\20\0\v\0\0\7\0uF`\5%+`\5\207+`\5..., 52},
{NULL, 0}, {, 0}], 3) = 52
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=14,
events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=17,
events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=22, events=POLLIN},
{fd=19, events=POLLIN}, {fd=27, events=POLLIN}, {fd=26, events=POLLIN}, {fd=23,
events=POLLIN}, {fd=18, events=POLLIN}], 12, 0) = 0 (Timeout)
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
poll([{fd=4, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=4, revents=POLLOUT}])
writev(4,
[{H\2\246\0uF`\5\207+`\5\20\0\n\0\260\0\364\0\0\30`\5\250\250\250\377\250\250\250\377...,
664}, {NULL, 0}, {, 0}], 3) = 664
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=14,
events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=17,
events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=22, events=POLLIN},
{fd=19, events=POLLIN}, {fd=27, events=POLLIN}, {fd=26, events=POLLIN}, {fd=23,
events=POLLIN}, {fd=18, events=POLLIN}], 12, 0) = 0 (Timeout)
poll([{fd=4, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=4, revents=POLLOUT}])
writev(4, [{5\30\4\0w\335`\5%+`\5\20\0\n\0\0\7\0uF`\5%+`\5\207+`\5..., 52},
{NULL, 0}, {, 0}], 3) = 52
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=14,
events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=17,
events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=22, events=POLLIN},
{fd=19, events=POLLIN}, {fd=27, events=POLLIN}, {fd=26, events=POLLIN}, {fd=23,
events=POLLIN}, {fd=18, events=POLLIN}], 12, 0) = 0 (Timeout)
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], [], 8) = 0
poll([{fd=4, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=4, revents=POLLOUT}])
writev(4,
[{H\2\206\0uF`\5\207+`\5\20\0\10\0\220\0\366\0\0\30`\5\250\250\250\377\0\0\0\377...,
536}, {NULL, 0}, {, 0}], 3) = 536
read(4, 0x2e28f44, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}, {fd=14,
events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=17,
events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=22,
