Bugzilla Bug 157457

My mythbackend runs fine when i just start the program. After a while (can be
an hour, can be a day) the usage rises to 99% cpu-power. When i restart the
program it is fine again (for a while). I have the same problem with different
kernels.
The problem can occur before any recording took place. Same problem with
different versions of mythtv, i tried all of the 0.20 branch (up until
0.20_p11626). I have 'repaired' the mythtv database (mythconverg) but that
didnt seem to do the trick. I was unable to find any related problem on the
mythtv-mailing list.

The logfile of mythtv doesnt show anything strange, at least not to me.


portage 2.1.2_rc2-r5 (default-linux/x86/2006.1/desktop, gcc-4.1.1,
glibc-2.4-r4, 2.6.18-gentoo-r2-skas3-v9-pre9 i686)
=================================================================
System uname: 2.6.18-gentoo-r2-skas3-v9-pre9 i686 Intel(R) Pentium(R) 4 CPU
2.80GHz
Gentoo Base System version 1.12.6
Last Sync: Thu, 07 Dec 2006 18:00:01 +0000
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632)
[disabled]
ccache version 2.3 [disabled]
dev-java/java-config: 1.3.7, 2.0.30
dev-lang/python:     2.4.3-r4
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     2.3
sys-apps/sandbox:    1.2.17
sys-devel/autoconf:  2.13, 2.61
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2
sys-devel/binutils:  2.16.1-r3
sys-devel/gcc-config: 1.3.13-r4
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.17-r2
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium4 -fomit-frame-pointer -pipe -msse2 -mmmx"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /opt/glftpd/etc /opt/glftpd/ftp-data /usr/kde/3.5/env
/usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/lib/mozilla/defaults/pref
/usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/init.d
/etc/java-config/vms/ /etc/revdep-rebuild /etc/splash /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-O2 -march=pentium4 -fomit-frame-pointer -pipe -msse2 -mmmx"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo
http://ftp.snt.utwente.nl/pub/os/linux/gentoo
ftp://ftp.easynet.nl/mirror/gentoo/"
LDFLAGS="-Wl,-z,now"
LINGUAS="en en_US en_GB nl"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage
/usr/portage/local/layman/java-experimental"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 X a52 aac aalib alsa alsa_cards_cs46xx alsa_cards_intel8x0 apache2
arts automount bash-completion berkdb bitmap-fonts bluetooth branding bzip2
cairo caps cdb cdr cli cracklib crypt cups curl curlwrappers dbus dlloader dri
dvd dvdr dvdread eds elibc_glibc emboss encode esd examples fam fbcon ffmpeg
firefox flac font-server fortran gd gdbm gif glitz gmp gnokii gnome gpm
graphviz gstreamer gtk gtk2 hal iconv input_devices_keyboard
input_devices_mouse ipv6 isdnlog jack java jpeg kde kdeenablefinal
kdehiddenvisibility kernel_linux ldap libcaca libg++ linguas_en linguas_en_GB
linguas_en_US linguas_nl lirc lirc_devices_none lua mad matroska mhash mikmod
mjpeg mmx mp3 mpeg mysql mythtv ncurses netboot nls nptl nptlonly nsplugin
nvidia ogg openexr opengl oss pam pcre pdf perl pic png ppds pppd python qt3
qt4 quicktime readline real reflection rtc samba sdl session spell spl sqlite
sse sse2 ssl svg svga tcl tcltk tcpd theora threads transcode truetype
truetype-fonts type1-fonts udev unicode usb userland_GNU utempter v4l v4l2
video_cards_nvidia vorbis win32codecs x264 xcomposite xine xml xorg xprint xv
xvid zlib"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL,
PORTAGE_RSYNC_EXTRA_OPTS

It's most likely a UPnP issue. Try disabling UPnP, add --noupnp to the init
script's start up.

(In reply to comment #1)
> It's most likely a UPnP issue. Try disabling UPnP, add --noupnp to the init
> script's start up.
> 

Thanks! I am running it now for a couple of days, and the processor usage
hasn't gone up since. Maybe this kind of info is worth mentioning after
emerging mythtv  :)

Fixed in mythtv-0.20_p12172 as well.