[Bug 612907] Re: 100% CPU usage on exit
Thomas Antepoth
612907 at bugs.launchpad.net
Sun Dec 5 17:46:22 UTC 2010
I also experience the 100%-CPU-on-exit-Bug.
A "strace -tttvp <PID>" of a hung thunderbird process gives:
1291570615.512403 read(3, 0x7fe302066074, 4096) = -1 EAGAIN (Resource temporarily unavailable)
1291570615.512427 poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN},
{fd=8, events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=13,
events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=18,
events=POLLIN}, {fd=10, events=POLLIN|POLLPRI}, {fd=32, events=POLLIN},
{fd=33, events=POLLIN}, {fd=35, events=POLLIN}, {fd=19, events=POLLIN}],
12, 0) = 0 (Timeout)
1291570615.512468 read(3, 0x7fe302066074, 4096) = -1 EAGAIN (Resource
temporarily unavailable)
1291570615.512491 poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN},
{fd=8, events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=13,
events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=18,
events=POLLIN}, {fd=10, events=POLLIN|POLLPRI}, {fd=32, events=POLLIN},
{fd=33, events=POLLIN}, {fd=35, events=POLLIN}, {fd=19, events=POLLIN}],
12, 0) = 0 (Timeout)
1291570615.512533 write(20, "\372", 1) = 1
1291570615.512556 read(3, 0x7fe302066074, 4096) = -1 EAGAIN (Resource
temporarily unavailable)
1291570615.512579 poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN},
{fd=8, events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=13,
events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=18,
events=POLLIN}, {fd=10, events=POLLIN|POLLPRI}, {fd=32, events=POLLIN},
{fd=33, events=POLLIN}, {fd=35, events=POLLIN}, {fd=19, events=POLLIN}],
12, 0) = 1 ([{fd=19, revents=POLLIN}])
1291570615.512630 read(19, "\372", 1) = 1
1291570615.512653 read(3, 0x7fe302066074, 4096) = -1 EAGAIN (Resource
temporarily unavailable)
1291570615.512677 poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN},
{fd=8, events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=13,
events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=18,
events=POLLIN}, {fd=10, events=POLLIN|POLLPRI}, {fd=32, events=POLLIN},
{fd=33, events=POLLIN}, {fd=35, events=POLLIN}, {fd=19, events=POLLIN}],
12, 0) = 0 (Timeout)
1291570615.512718 read(3, 0x7fe302066074, 4096) = -1 EAGAIN (Resource
temporarily unavailable)
1291570615.512742 poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=8, events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=13, events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=18, events=POLLIN}, {fd=10, events=POLLIN|POLLPRI}, {fd=32, events=POLLIN}, {fd=33, events=POLLIN}, {fd=35, events=POLLIN}, {fd=19, events=POLLIN}], 12, 0 <unfinished ...>
Process 11856 detached
The failed read() call is on the file descriptor #3.
The open file descriptor #3 of the hung process is:
thunderbi 11856 t_antepoth 3u unix 0xffff88003cc049c0
0t0 398985827 socket
:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid
enigmail is installed but disabling the plugin does not alleviate the problem.
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https://bugs.launchpad.net/bugs/612907
Title:
100% CPU usage on exit
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