Landscape Client

high cpu usage on intrepid

Bug #250876 reported by Andreas Hasenack on 2008-07-22

	Status	Importance	Assigned to	Milestone
Landscape Client	Fix Released	Medium	Unassigned
Landscape Server	Fix Released	Medium	Unassigned	Landscape Server thames-pre-6
PyGTK	Fix Released	Medium	gnome-bugs #481569
pygobject (Ubuntu)	Fix Released	Undecided	Unassigned

Bug Description

The client part of landscape has a very high CPU usage when run on intrepid:

5611 landscap 20 0 34080 13m 4204 R 49.7 1.3 1:06.24 landscape-monit
5655 landscap 20 0 83940 59m 4724 R 49.7 5.9 0:07.56 landscape-packa

and most of the time it's:
5611 landscap 20 0 34080 13m 4204 R 99.7 1.3 1:43.87 landscape-monit

Andreas Hasenack (ahasenack) on 2008-07-22

Changed in landscape:
importance:	Undecided → Medium
milestone:	none → thames-pre-5
Changed in landscape-client:
importance:	Undecided → Medium

Revision history for this message

Andreas Hasenack (ahasenack) wrote on 2008-07-22:

It's the same as bug #203647, which was fixed in python-gobject back then for hardy:

pygobject (2.14.1-2ubuntu1) hardy; urgency=low

* debian/patches/61_dont_use_setwakeupfd.patch:
- don't use SetWakeupFd, it creates abnormal cpu usage in some situations

-- Sebastien Bacher < <email address hidden>> Wed, 19 Mar 2008 22:17:53 +0100

Here is a test case:
http://launchpadlibrarian.net/12725702/testcase.py

Bug Watch Updater (bug-watch-updater) on 2008-07-22

Changed in pygtk:
status:	Unknown → Confirmed

Andreas Hasenack (ahasenack) on 2008-08-01

Changed in landscape-client:
status:	New → Confirmed
Changed in landscape:
status:	New → Confirmed

Revision history for this message

Andreas Hasenack (ahasenack) wrote on 2008-08-07:

Pushed for thames-pre-6.

Changed in landscape:
milestone:	thames-pre-5 → thames-pre-6

Revision history for this message

Loïc Minier (lool) wrote on 2008-08-11:

I've merged a fix from Debian which was sent upstream already:

pygobject (2.15.1-0ubuntu2) intrepid; urgency=low

  * New patch, 61_wakeupfd-fctnl-and-read, merge back parts of patch
    61_wakeupfd-fix (named "Do not use the wakeup fd if it not initialised" in
    GNOME #481569) which still apply (setting the read end of the pipe() as
    non-blocking and actually reading bytes from it); LP: #250876;
    GNOME #481569.
  * Refresh patch 03_maintainer_mode.

-- Loic Minier <email address hidden> Mon, 11 Aug 2008 17:28:02 +0200

Changed in pygobject:
status:	New → Fix Released

Revision history for this message

Andreas Hasenack (ahasenack) wrote on 2008-08-11:

Confirmed working. After installing the new package and restarting landscape-client, its CPU usage was back to normal. The test case is also working properly.

Revision history for this message

Andreas Hasenack (ahasenack) wrote on 2008-08-11:

A new release of pygobject for Intrepid fixed this in landscape.