37663 - Mozilla eats CPU

Status: VERIFIED DUPLICATE of bug 37643

(SeaMonkey :: General, defect, P3)

Description

[Masatoshi Kimura [:emk]]

Steps to reproduce:
1. Launch Task Manager.
2. Launch Mozilla.
3. Look at CPU usage on task trey.

Actual result:
CPU usage is always nearly 100%. Everything becomes very slow.
If you are using debug build, you will see the following message repeatedly.
-------------------------------------------------------------------------------
WARNING: Inefficient XUL: Reflowing outer tree frame with unconstrained width, t
ry giving it a width in CSS!, file j:\internet\mozilla\mozilla\layout\xul\base\s
rc\nsTreeOuterFrame.cpp, line 126
WARNING: Inefficient XUL: Reflowing outer tree frame with unconstrained height,
try giving it a height in CSS!, file j:\internet\mozilla\mozilla\layout\xul\base
\src\nsTreeOuterFrame.cpp, line 133
-------------------------------------------------------------------------------

Expected result:
CPU usage is nearly 0% when idle.

Occurs on:
mozilla.exe 2000043008 nightly build on Windows 2000
Latest cvs build

Doesn't occur on:
mozilla.exe 2000042708 nightly build on Windows 2000
viewer.exe 2000043008 nightly build on Windows 2000

Comment 1

[chuckie]

Tried on Win98 with build 2000043008
I think this has somthing to do with the sidebar.
If I hide sidebar with View > Sidebar it works fine.
With the sidebar opened, Mozilla is almost unusable.

Comment 2

[Gervase Markham [:gerv]]

This is a known issue in #mozilla; however, I don't know if there are other 
bugs. I suspect so.

Gerv

Comment 3

[Masatoshi Kimura [:emk]]

*** This bug has been marked as a duplicate of 37643 ***

Comment 4

[Asa Dotzler [:asa]]

Sorry for the spam.  New QA Contact for Browser General.  Thanks for your help
Joseph (good luck with the new job) and welcome aboard Doron Rosenberg

Comment 5

[Doron Rosenberg (IBM)]

verified