Bug 1377712 - high cpu usage when dialogs are displayed
Summary: high cpu usage when dialogs are displayed
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: mediawriter
Version: 25
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Martin Bříza
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-09-20 12:33 UTC by Kamil Páral
Modified: 2016-09-27 00:31 UTC (History)
3 users (show)

Fixed In Version: mediawriter-3.97.1-0.fc25
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2016-09-27 00:31:39 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)
error dialog with high cpu usage (137.35 KB, image/png)
2016-09-20 12:33 UTC, Kamil Páral 		no flags Details
flicker under dialogs (3.19 MB, application/octet-stream)
2016-09-20 12:59 UTC, Kamil Páral 		no flags Details
View All

Description Kamil Páral 2016-09-20 12:33:51 UTC 
Created attachment 1202875 [details]
error dialog with high cpu usage

Description of problem:
During any dialog displayed (error dialog, download progress dialog) the CPU usage goes somewhere between 60-150% CPU and the window below the dialog is flickering. It seems like the window below gets refreshed 60 times per second or something.

Version-Release number of selected component (if applicable):
mediawriter-3.96.0-0.fc25.x86_64

How reproducible:
always

Steps to Reproduce:
1. either see cpu usage during download, or introduce a network error (e.g. disconnect form the network) and see cpu usage when error dialog is displayed
Comment 1 Kamil Páral 2016-09-20 12:49:52 UTC 
The same high CPU usage is there during "Finished!" dialog.
Comment 2 Kamil Páral 2016-09-20 12:59:11 UTC 
Created attachment 1202886 [details]
flicker under dialogs

In this video you can see flicker under the dialog, and also higher CPU usage (a bit, in fact, the longer you keep the dialog opened, the higher the CPU usage goes).

The flicker is considerably worse in reality, since I recorded the video in 15 fps and so not all flicker is visible in the video.
Comment 3 Martin Bříza 2016-09-20 13:03:50 UTC 
This won't be easy to fix this behavior, I'll probably have to remove some animations because there's a bug in Qt under Linux/Xorg causing QML apps to eat CPU when there are animations...
Comment 4 Onuralp SEZER 2016-09-20 23:18:18 UTC 
I had some issue too which is using %150-%200 of CPU usage*
Comment 5 Martin Bříza 2016-09-22 12:29:09 UTC 
Fixed upstream.
Comment 6 Fedora Update System 2016-09-23 05:24:15 UTC 
mediawriter-3.97.0-0.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-d84f684d42
Comment 7 Kamil Páral 2016-09-23 12:21:26 UTC 
(In reply to Fedora Update System from comment #6)
> mediawriter-3.97.0-0.fc25 has been pushed to the Fedora 25 testing

Seems fixed, awesome.
Comment 8 Fedora Update System 2016-09-24 17:52:03 UTC 
mediawriter-3.97.1-0.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-e34fd77aaf
Comment 9 Fedora Update System 2016-09-27 00:31:39 UTC 
mediawriter-3.97.1-0.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
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