Bug 376515

Summary:	Using folder view widget causes extremely high CPU load, feels very sluggish
Product:	[Plasma] plasmashell	Reporter:	AE <vltg0903>
Component:	Desktop icons & Folder View widget	Assignee:	Eike Hein <hein>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	kde, plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.9.2
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description AE 2017-02-15 13:00:07 UTC

I've noticed this regression beginning with plasma 5.9.1. Only dragging the mouse cursor across the folder view on my desktop causes the plasmashell process to shoot up to 100% CPU usage, and icons light up with two or three seconds delay. Moving or resizing also has this kind of delay between action and consequence. Happens for both 'Desktop' mode and files mode. When clicking an icon to start a program, there is a delay, but not as severe. Using the UI elements in the bottom panel seems to be OK, there's no noticeable lag here.

Some system information:
Thinkpad T450s
Gentoo
xorg-server 1.19.1
xf86-video-intel 2.99.917_p20161206
mesa 13.0.0.4

Comment 1 Eike Hein 2017-02-15 13:16:28 UTC

Can't say we've seen this. Can you use debugging/profiling tools to find out more ...?

Comment 2 AE 2017-03-06 00:42:24 UTC

Turns out I had a misconfigured mesa built, i. e. it was my own damn fault. Please close this one.

Comment 3 David Edmundson 2017-03-06 00:44:00 UTC

thanks for reporting back.