Bug 1235033

Summary:	High CPU usage by plasmashell while downloading files with Konqueror
Product:	[Fedora] Fedora	Reporter:	Giulio 'juliuxpigface' <juliux.pigface>
Component:	plasma-workspace	Assignee:	KDE SIG <kde-sig>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	22	CC:	dvratil, jgrulich, kde-sig, kevin, rdieter, than
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	kf5-kdeclarative-5.12.0-2.fc22	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-08-05 22:29:21 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Giulio 'juliuxpigface' 2015-06-23 20:11:28 UTC

Description of problem:
While downloading with Konqueror, the process plasmashell uses a large amount of CPU (about 80%). Since my test system is a kvm-qemu guest, the host's temperatures shift to 95° (according to lm-sensors). I've seen similar values before only while installing via Anaconda.

Please note that perhaps this is a normal behavior, but I'm reporting this since I'm not sure enough.

Version-Release number of selected component (if applicable):
plasma-desktop-5.3.1-6.fc22.x86_64
plasma-workspace-5.3.1-5.fc22.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Try to download a large file via Konqueror (for example, the latest linux kernel tarball).
2. Take a look to CPU usage with top while downloading.

Actual results:
1. There is a high CPU usage by the process plasmashell.

Expected results:
1. plasmashell should not stress the CPU.

Additional info:
Downloading the same package with Firefox, only rises the process 'firefox' to ~15% of CPU usage.

Comment 1 Giulio 'juliuxpigface' 2015-07-12 14:51:48 UTC

One more additional info: this behavior persists even if I pause the download from the taskbar.

The CPU's usage of plasmashell calms down only when the download is actually stopped or completed.

Comment 2 Fedora Update System 2015-07-30 16:01:00 UTC

kf5-kdeclarative-5.12.0-2.fc22 has been submitted as an update for Fedora 22.
https://admin.fedoraproject.org/updates/kf5-kdeclarative-5.12.0-2.fc22

Comment 3 Fedora Update System 2015-07-30 16:03:58 UTC

kf5-kdeclarative-5.12.0-2.fc21 has been submitted as an update for Fedora 21.
https://admin.fedoraproject.org/updates/kf5-kdeclarative-5.12.0-2.fc21

Comment 4 Fedora Update System 2015-07-31 07:57:35 UTC

Package kf5-kdeclarative-5.12.0-2.fc22:
* should fix your issue,
* was pushed to the Fedora 22 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kf5-kdeclarative-5.12.0-2.fc22'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2015-12448/kf5-kdeclarative-5.12.0-2.fc22
then log in and leave karma (feedback).

Comment 5 Fedora Update System 2015-08-05 22:29:21 UTC

kf5-kdeclarative-5.12.0-2.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2015-08-12 06:57:58 UTC

kf5-kdeclarative-5.12.0-2.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.