Plugin memory consumption continuously grows, and after some days it consumes some GBs of memory. After process killing memory is freed, and growing starts again. I have quad-core CPU, AMD64 OS arch. I noticed leakage not so early because mostly I used console mode on this PC (it's a home server), and not so long time I need GUI apps that runs for a days.
Once you have some meaningful data to attach here, reopen the bug: http://wiki.xfce.org/howto/panel_plugin_debug#debug_with_valgrind_full_example
Created attachment 313459 [details] requested valgrind log
Created attachment 313759 [details] Valgrind log of cpufreq plugin I have the same problem. I attached the valgrind output from wrapping cpufreq as described on the (old?) wiki page. One caveat: the wrapped plugin complained with the message "(xfce4-cpufreq-plugin:27899): CRITICAL **: _xpp_provider_signal: assertion `GDK_IS_WINDOW (window)' failed" in the terminal in which I started xfce4-panel. I didn't see the actual plugin running on the panel, and I had to kill the process from the console. I don't know if that messes up the valgrind output or not.
Use the "See also: " field in this bug and file a new bug at http://bugzilla.xfce.org/ with the valgrind information attached (and anything else they will ask)
Created attachment 313769 [details] compressed output of cpugraph run through valgrind This valgrind output is for cpugraph. The previous one was cpufreq, which wasn't the plugin in question. (Sorry about that). I also uploaded this one to xfce's bug tracker (bug https://bugzilla.xfce.org/show_bug.cgi?id=8521).
a tempororay fix if you want to continue to use the plugin is to send an INT signal to it: kill -s INT $(ps -eo pid,comm= | grep 'panel-.*-cpu' | awk '{print $1}') you should be able to throw that in a nightly cron
Created attachment 322252 [details, diff] Patch suggested in upstream bug 8521 Upstream's suggested patch fixes the issue for me using xfce4-cpugraph-plugin and "Xfce" style appearance. No leak for 48 hours.
Patch added as =x11-themes/gtk-engines-xfce-3.0.0-r201:0
