Closed Bug 245314 Opened 21 years ago Closed 20 years ago

High CPU usage when moving mouse pointer over Thunderbird (0.6) window

Categories

(Thunderbird :: Mail Window Front End, defect)

Product:
Thunderbird
Component:
Mail Window Front End
Platform:
x86
Windows 2000
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

(Not tracked)

Status:
RESOLVED EXPIRED

People

(Reporter: cdokolas, Assigned: mscott)

Details

User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040113 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040113 Moving the mouse pointer over a Thunderbird window, especially between different areas (i.e. folder tree, message list, message preview, toolbar) produces high CPU activity (60-90% with ~10% usage when machine is idle) most of which is kernel time. Checking the Task Manager data shows that it is all page faults (PF delta has values in the 200-400 area when update rate is set to normal). This happens whether the window is in the foreground or the background. Reproducible: Always Steps to Reproduce: 1. Open Thunderbird 0.6 2. Aimlessly move mouse pointer over application window Using: Thunderbird 0.6 Enigmail 0.84.0.0 (with Enigmime) Built-in Thunderbird theme (no others present) 1 IMAP account on a MS Exhange Server 2003
Confirming. Same happens in firefox browser window even on a dummy page like about:blank cpu usage on mouse move is like 30% (idle otherwise)
I think it's related to the type of video card though. I have two Toshiba Tecra laptops. One has a Trident Video Accelerator Cyber-XP4 v6.4823-101.22_1 and the other has a ATI Radeon Mobility 9000. The same high-cpu problem occurs only on the Trident laptop even though they are otherwise pretty similar. I am already at the latest Trident driver. I also upgraded my mouse driver for good measure and I still have the problem. My CPU goes straight to 100% when moving the mouse over the TB application window, but not in Firefox.
CONFIRMED with thunderbird ver. 1.0 (20041206) on Win 2000 sp4 (greek language) with no additional themes or extensions and with 5 pop accounts MORE DETAILS: ALWAYS REPRODUCIBLE BEHAVIOUR:I get the high cpu load (as high as 99%) when I move the mouse over the boundaries of diferent areas (any two of the following folder tree, message list , previou pane, menu and toolbar). The faster I move between the two the higer the CPU load. NOT REPRODUCIBLE BEHAVIOUR: I first noticed this behaviour without moving and it made my computer responding with a lot of litle freezes but I can't reproduce it. Will see the next time
Same problem here: TB 1.0 (20041206) Windows 2000 SP4 Nvidia GF 5200 FX, Dual screen ( 2x 1024x768 ) Logitech Opti mouse Moving the mouse over the tb area and cpu load gets 100%.
Same behavior also showing in: Thunderbird 1.0 (20041206) Windows XP Service Pack 2 on a 1.8GHz P4 NVidia Riva TNT2-64 display adapter I would describe this as a serious usability problem.
This is an automated message, with ID "auto-resolve01". This bug has had no comments for a long time. Statistically, we have found that bug reports that have not been confirmed by a second user after three months are highly unlikely to be the source of a fix to the code. While your input is very important to us, our resources are limited and so we are asking for your help in focussing our efforts. If you can still reproduce this problem in the latest version of the product (see below for how to obtain a copy) or, for feature requests, if it's not present in the latest version and you still believe we should implement it, please visit the URL of this bug (given at the top of this mail) and add a comment to that effect, giving more reproduction information if you have it. If it is not a problem any longer, you need take no action. If this bug is not changed in any way in the next two weeks, it will be automatically resolved. Thank you for your help in this matter. The latest beta releases can be obtained from: Firefox: http://www.mozilla.org/projects/firefox/ Thunderbird: http://www.mozilla.org/products/thunderbird/releases/1.5beta1.html Seamonkey: http://www.mozilla.org/projects/seamonkey/
This bug has been automatically resolved after a period of inactivity (see above comment). If anyone thinks this is incorrect, they should feel free to reopen it.
Status: UNCONFIRMED → RESOLVED
Closed: 20 years ago
Resolution: --- → EXPIRED
This defect is in fact still a problem. On one of my systems, Thunderbird is so sluggish in responding to mouse movements as to be painful to use. It's a Windows XP system, with Thunderbird 1.0. I have another Windows XP system on which it's perfectly fine. This would seem to lend credibility to the suggestion that the problem may be video driver specific. I'm happy to provide any additional information, but I don't know what information will help. Feel free to ask.
Reporter, could you try reproduce this on a 1.5 build? What video cards are the two machines running that the problem being shown?
When I filed this bug the machine was a 1GHz Celeron with integrated Intel 82815 graphics chip (W2Ksp3-4). My new machine does not exibit the problem (v1.0.6 on W2Ksp4 on 3GHz P4 with a GeForce 4). It does look like a rare graphics card-specific problem after all.
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