I've been running mythfrontend for over a year on my AMD64 machine. In general, through numerous revisions of myth, it's never used more than roughly 15% of CPU as measured in top. Following the upgrade to gcc-4.1.1 myth is now using over 90% CPU. The machine is nearly unusable as a desktop machine when myth is running: top - 17:00:39 up 13 min, 2 users, load average: 2.14, 0.75, 0.31 Tasks: 90 total, 2 running, 88 sleeping, 0 stopped, 0 zombie Cpu(s): 91.0% us, 9.0% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 1025944k total, 497976k used, 527968k free, 11124k buffers Swap: 2008084k total, 0k used, 2008084k free, 167356k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7366 mark 15 0 283m 128m 22m S 90.5 12.8 0:53.38 mythfrontend 6262 root 19 0 128m 65m 13m R 7.0 6.5 0:16.38 X 812 root -49 -5 0 0 0 S 0.7 0.0 0:00.29 IRQ 8 912 root -42 -5 0 0 0 S 0.7 0.0 0:01.08 IRQ 217 I don't have a clue where to look when it comes to a problem like this. I'll hope a developer is interested and can give me some direction. NOTE: I cannot say for sure but it also seems to me that post gcc-4.1.1 that the system is now using FAR more memory than it used to. I used to have only 512MB in this system and had no problems running Myth and something like Firefox at the same time. Now it seems that sometimes memory usage goes up quite high, although the listing above does not show this. I'll keep an eye out for what might cause that. lightning ~ # emerge -pv mythtv These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild R ] media-tv/mythtv-0.19_p10505 USE="alsa dvd frontendonly jack opengl vorbis (-altivec) -backendonly -dbox2 -debug -dvb -ieee1394 -joystick -lcd -lirc (-mmx) -xvmc" VIDEO_CARDS="-i810 -nvidia -via" 0 kB Total size of downloads: 0 kB lightning ~ # lightning ~ # emerge --info Portage 2.1.1 (default-linux/amd64/2005.1, gcc-4.1.1, glibc-2.4-r3, 2.6.17-rt5 x86_64) ================================================================= System uname: 2.6.17-rt5 x86_64 AMD Athlon(tm) 64 Processor 3000+ Gentoo Base System version 1.12.5 Last Sync: Sat, 16 Sep 2006 14:00:01 +0000 app-admin/eselect-compiler: [Not Present] dev-java/java-config: 1.2.11-r1 dev-lang/python: 2.3.5-r2, 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.59-r7 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-r3 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/lib64/mozilla/defaults/pref /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-march=k8 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://mirror.tucdemonic.org/gentoo/ ftp://ftp.gtlib.cc.gatech.edu/pub/gentoo http://mirror.gentoo.gr.jp http://www.zentek-international.com/mirrors/gentoo/" LINGUAS="" 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/pro-audio /usr/portage/local/layman/pro-audio" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 X alsa apache2 audiofile avi berkdb bitmap-fonts cdr cjk cli crypt cups dlloader dri dvd dvdr dvdread elibc_glibc emboss encode flac fluidsynth foomaticdb fortran gif gimp gimpprint gnome gpm gstreamer gtk gtk2 i8x0 imlib input_devices_evdev input_devices_keyboard input_devices_mouse ipv6 isdnlog jack jack-tmpfs java jpeg kde kernel_linux ladspa lzw lzw-tiff mjpeg mp3 mpeg mysql mythtv ncurses nls nptl nptlonly ogg opengl pam pcre pdflib perl png ppds pppd python qt3 qt4 quicktime radeon readline reflection sdl session sndfile spell spl ssl tcltk tcpd tiff truetype truetype-fonts type1-fonts unicode usb userland_GNU v4l v4l2 video_cards_fglrx video_cards_radeon video_cards_vesa vorbis xorg xpm xscreensaver xv xvid zlib" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS lightning ~ #
This appears to be some combination of GCC-4 and ati-drivers. I switched back to the kernel's radeon driver and CPU usage is back to normal.
There's something else going on there with your configs or your OpenGL being screwy or something. I'd go through and check your configs.
Not likely I'll spend any time on this. It's some corner case. I'm happy for now using the radeon driver. It's just a report. The problem was repeatable. Anyway, no more work to be done on this unless a developer shows and interest. thanks!
