Bug 318127

Summary: Notifications in systray maximizes Xorg CPU core usage
Product: [Plasma] plasma4 Reporter: Pascal d'Hermilly <pascal>
Component: generalAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal    
Priority: NOR    
Version: 4.10.2   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:

Description Pascal d'Hermilly 2013-04-10 09:54:36 UTC 
The animation done by the Notifications (32x32 pixel animation in systray) is making Xorg process take up a whole core of cpu power.

Reproducible: Always

Steps to Reproduce:
1.Take a look at Xorg cpu usage
2. start big file transfer that results in little spinning thing in systray
3. take a look at Xorg cpu usage
Actual Results:  
Xorg uses all the CPU it can get its hands on.

Expected Results:  
no measurable cpu impact

Deactivating the notifications in the systray during the file transfer instantly reduce the Xorg usage to normal.

This is probably a real killer for mono-core CPUs
Comment 1 Pascal d'Hermilly 2013-04-10 13:25:42 UTC 
trying to debug, I enabled kwin FPS and paint effects.
When the notifications icons is spinning, my FPS(as repoted by KWin) falls from 60 to 25-30
It's only painting in the ca. 32x32  notifications spinning icon in systray
Comment 2 Jekyll Wu 2013-04-10 13:53:32 UTC 

*** This bug has been marked as a duplicate of bug 311799 ***