High CPU usage by wxListBox in wxpython 2.6

[anilg]

Adding a wxListBox to any wx2.6 python app sends it to 100% CPU usage. This renders most wxwidget apps very CPU intensive.

Attached are example ListBox and ListCtrl apps. You can run these with pywx 2.6 (update-alternatives --list wx2.6.pth to ensure this is selected, in case you have both 2.6 and 2.8 installed)

lb.py - CPU goes to 90% .
lc.py - CPU remains idle

[anilg (anil-verve)]

This bug occurs in Unity, Unity 2D and classic gnome.

This is a Oneric netbook (upgraded from natty).
Package libwxgtk2.6-0 v2.6.3.2.2-5ubuntu3

If there's additional details you'd like, please let me know.

[anilg (anil-verve)]

Ubuntu 11.04 with 2.6.3.2.2-5ubuntu2 does not show this bevahior. Possibly, the change b/w ubuntu2 and ubuntu3 caused the issue.

[anilg (anil-verve)]

I just tested, and can confirm that rolling back to the natty versions of the packages resolved the issue.

Setting up libwxbase2.6-0 (2.6.3.2.2-5ubuntu2) ...
Setting up libwxgtk2.6-0 (2.6.3.2.2-5ubuntu2) ...
Setting up python-wxgtk2.6 (2.6.3.2.2-5ubuntu2) ...

This is a regression in the 2.6 wxwidget package.

[anilg (anil-verve)]

Arr.. my bad. The issue still exists (after i installed the older packages, update-alternatives picked up wx2.8. setting it back to 2.6 - from natty- and the issue still exists.)

So I'm not sure if it's something with Unity, or with wx2.6.

I did see https://bugs.launchpad.net/ubuntu/+source/wxwidgets2.8/+bug/722375 .. any possible relation?

[Trinh Nguyen (dangtrinhnt)]

This issue appears in my Xubuntu 12.04 with wxPython 2.8.12.1. But, the CPU usage only raises after the my application has run for a long time (1 day or more)