mythbackend processes continue to run after preview generator completes

[skd5aner <skd5aner@…>]

After upgrading to .23-fixes (r24035), I noticed several mythbackend processes in ps, releated to preview generation. The recordings were good, and the previews showed up as expected, but the processes never stopped. This is on my slave backend. My master backend does not appear to show any extra mythbackend processes.

I'm attaching a backtrace from one of the attached processes (pid 8813) and the output of ps aux | grep mythbackend.

Please let me know if there's any additional information you'd like me to provide.

ps aux | grep mythbackend
mythtv    6059  0.1  1.9 573852 40864 ?        Ssl  Apr10   4:11 /usr/local/bin/mythbackend -d --logfile /var/log/mythtv/mythbackend.log --pidfile /var/run/mythtv/mythbackend.pid
mythtv    8812  0.0  0.0   4004   560 ?        SN   Apr10   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4774 --starttime 20100410180000
mythtv    8813  0.0  1.6 288240 34656 ?        SNl  Apr10   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4774 --starttime 20100410180000
mythtv    8919  0.0  0.0   4004   556 ?        SN   Apr10   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv    8921  0.0  0.0   4004   560 ?        SN   Apr10   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv    8922  0.0  1.6 288240 34652 ?        SNl  Apr10   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv    8923  0.0  1.6 288240 34648 ?        SNl  Apr10   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv   10058  0.0  0.0   4004   556 ?        SN   Apr10   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4356 --starttime 20100324203000
mythtv   10062  0.0  1.6 288240 34648 ?        SNl  Apr10   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4356 --starttime 20100324203000
mythtv   11316  0.0  0.0   4004   556 ?        SN   Apr10   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv   11317  0.0  1.6 288240 34648 ?        SNl  Apr10   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv   11596  0.0  0.0   4004   560 ?        SN   Apr10   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv   11597  0.0  1.6 288240 34648 ?        SNl  Apr10   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4401 --starttime 20100410190000
mythtv   12775  0.0  0.0   4004   560 ?        SN   Apr11   0:00 sh -c /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4774 --starttime 20100411150000
mythtv   12776  0.0  1.6 288272 34660 ?        SNl  Apr11   0:00 /usr/local/bin/mythbackend --generate-preview 0x0 --chanid 4774 --starttime 20100411150000
root     14282  0.0  0.0   7336   868 pts/1    R+   18:35   0:00 grep mythbackend

mythbackend --version
Please include all output in bug reports.
MythTV Version   : 24035
MythTV Branch    : branches/release-0-23-fixes
Network Protocol : 56
Library API      : 0.23.20100314-1
QT Version       : 4.5.2
Options compiled in:
 linux profile using_oss using_alsa using_pulse using_pulseoutput using_backend using_directfb using_dvb using_firewire using_frontend using_hdhomerun using_hdpvr using_iptv using_ivtv using_joystick_menu using_libfftw3 using_lirc using_mheg using_opengl_video using_opengl_vsync using_qtdbus using_qtwebkit using_v4l using_x11 using_xrandr using_xv using_bindings_perl using_bindings_python using_opengl using_vdpau using_ffmpeg_threads using_libavc_5_3 using_live using_mheg

[robertm]

Would be worth seeing if this still occurs now that preview generation has changed so substantially.

[stuartm]

Turns out to be a QT bug resolved in 4.6.x