Red Hat Bugzilla – Bug 457845
Excessive spawning of new console-kit-daemon processes
Last modified: 2009-10-28 20:20:30 EDT
Description of problem:
I have upgraded a new F9 system to Rawhide. Whereas other recent bugs related to switching runlevels, I have seen the creation of lots of console-kit-daemon processes when going straight into runlevel 5. As of this writing, there are 62 such processes on the system, which has been up 30 minutes.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
excerpt of pstree output:
This is not a bug, it is working around the limitiations of the linux vt system.
These are threads, one for each vt, sleeping in VT_WAITACTIVE.
Created attachment 336537 [details]
Patch for ConsoleKit 0.30 to remove so many threads
This patch changes ConsoleKit to use an new VT ioctl and wait on a terminal switch without requiring a thread for every possible VT.
Created attachment 336538 [details]
Kernel patch to add new VT ioctl.
This patch must be added to the kernel to support the previous patch for ConsoleKit. Basically we add a VT_WAITSWITCH ioctl which sleeps until any virtual console switch occurs; this allows ConsoleKit to only use one thread to wait, and it uses the VT_GETSTATE ioctl to determine the active VT (as with Solaris implementation).
FYI: I'm seeing the same thing in F12. (63 console-kit-daemon processes)