I first thought this is a problem of ALSA because everytime when I started to play some music, my system crashed very shortly after (sometimes after ~5 minutes). Though it crashed not immediatly and playing videos or some short sound files also didn't hurt. But when playing some music (in Amarok), it was for sure that the system would freeze which was very annoying. After replacing the kernel ALSA by alsa-modules and trying much other things and getting more and more annoyed, I get the idea that perhaps the sysprof-module could cause these freezes because this module runs more or less since the same time when the problem occured firstly. I have now unloaded the module and I am playing music for hours now without any crash.
Now I am using the kernel ALSA again. This is my kernel: Linux macbook 2.6.24-gentoo-r8 #4 SMP Mon Jun 9 12:19:32 CEST 2008 i686 Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz GenuineIntel GNU/Linux My soundcard: 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
Created attachment 156079 [details] current kernel config
macbook ~ # emerge --info Portage 2.1.4.4 (default-linux/x86/2007.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.24-gentoo-r8 i686) ================================================================= System uname: 2.6.24-gentoo-r8 i686 Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz Timestamp of tree: Sun, 08 Jun 2008 13:00:02 +0000 distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] app-shells/bash: 3.2_p33 dev-java/java-config: 1.3.7, 2.1.6 dev-lang/python: 2.4.4-r13 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.23-r3 ACCEPT_KEYWORDS="x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=nocona -pipe -ggdb" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-O2 -march=nocona -pipe -ggdb" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks metadata-transfer parallel-fetch sandbox sfperms splitdebug unmerge-orphans userfetch" GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ ftp:///ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ ftp://ftp6.uni-erlangen.de/pub/mirrors/gentoo ftp://vlaai.snt.ipv6.utwente.nl/pub/os/linux/gentoo/ ftp://mirror.nutsmaas.nl/gentoo/" LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" LINGUAS="de" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/private" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="7zip X a52 aac acl acpi alsa altenburgcards amarok amr amuled apm applet async asyncns atm automount avahi bash-completion berkdb bluetooth bonjour bookmarks bzip2 cairo cdr cli cracklib crypt cups d dbus dedicated deskbar dga dhcp divx dri dv dvd dvdr dvdread dvi eap-tls enblend encode evo exif extra-algorithms fam fasttrack ffmpeg flac ftp galago gd gdbm german gif glib glitz gmedia gnome gnutella gnutls gphoto2 gpm gsf gtk h323 hal haskell hddtemp hfs iconv icu id3 id3tag ieee1394 imlib injection inkjar ipv6 irda isdnlog isight jabber java javascript jit jpeg jpeg2k kde kig-scripting kqemu latex lcms libnotify lirc lm_sensors lua lzo macbook mad madwifi maps mdnsresponder-compat midi mmap mmx mng mozdevelop mp2 mp3 mp4 mpeg mtp mudflap musicbrainz nautilus ncurses net network networking networkmanager njb nls nntp nptl nptlonly nsplugin ntfs ogg opengl openmp oss pam pascal pch pcre pdf perl pidgin plotutils pmu png pnm posix postgres postscript ps pth pulseaudio python qt3support qt4 quicktime rar rc5 rdesktop readline real realmedia reflection reiser4 reiserfs rtc samba screen sdl sdl-image sdl-sound sdlaudio server session sftp sharedmem sift slp smp sockets socks5 solver sourceview speex spell spl sse sse2 ssl ssse3 startup-notification subversion svg tetex theora threads threadsafe tiff timidity tk trayicon truetype unicode unzip usb v4l2 valgrind vcd video vorbis weak-algorithms wifi win32codecs wma wmp wxwindows x264 x86 xanim xattr xcomposite xext xface xine xml xmlreader xorg xrandr xscreensaver xulrunner xv xvid zip zlib zsh-completion" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CAMERAS="sony_dscf1 sony_dscf55" ELIBC="glibc" INPUT_DEVICES="keyboard mouse synaptics evdev wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="de" LIRC_DEVICES="inputlirc macmini" USERLAND="GNU" VIDEO_CARDS="i810 vesa" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
First off, sorry for this old bug staying here unattended. However I've never experienced any crashes of anything with sysprof module loaded, so it's hard to do anything about it myself without some debugging of your own :( However, does it still happen to you these days with 6 months newer kernel and other system stuff?
I just tested it again and it crashed right now again with this kernel: Linux acompneu 2.6.27-gentoo-r8 #1 SMP Tue Jan 20 21:07:44 CET 2009 i686 Intel(R) Core(TM)2 CPU E8500 @ 3.16GHz GenuineIntel GNU/Linux
Sorry for any delays on replies again. I haven't been able to reproduce this unfortunately. I guess you still experience it? :( I only know of playing music potentially skewing the profiling results due to some complex interactions or whatnot, but not of crashing. Though because of that it's not advisable to be playing music on the same machine where some sample based (e.g sysprof) profiling is done, unless profiling the music playing. It shouldn't crash though...
The last time I tried (perhaps a month ago), it still crashed. Perhaps you can give me some instructions how to debug this? I haven't done any Kernel debugging yet.
Still valid with 1.1.8-r1?
sysprof doesn't use its own kernel module since v1.1, but relies on the kernel perf counters and infrastructure instead. So this is obsolete for many years now, closing. Thanks
