Bug 129954 - High CPU utilization and lag when holding delete while header image is showing
Summary: High CPU utilization and lag when holding delete while header image is showing
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
Inherited From OOo
Hardware: All All
: low minor
Assignee: Not Assigned
URL:
Whiteboard:
Keywords: perf
Depends on:
Blocks: Performance
  Show dependency treegraph
 
Reported: 2020-01-12 11:59 UTC by Telesto
Modified: 2024-09-07 03:18 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


Attachments
Example file (84.57 KB, application/vnd.oasis.opendocument.text)
2020-01-12 11:59 UTC, Telesto
Details
perf flamegraph (53.19 KB, application/x-bzip)
2020-01-12 12:47 UTC, Julien Nabet
Details

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Description Telesto 2020-01-12 11:59:43 UTC
Description:
High CPU utilization and lag when holding delete while header image is showing  

Steps to Reproduce:
1. Open attached file
2. Set the cursor at the beginning of the yellow marking
3. Hold delete (lag) with 6.5. No noticeable lag but high cpu usage with 4.4.7.2 and older

Actual Results:
High CPU usage

Expected Results:
Normal CPU usage


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.5.0.0.alpha0+ (x64)
Build ID: ce685f64f38551e7984155783c9c7660d986abf6
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win; 
Locale: nl-NL (nl_NL); UI-Language: en-US
Calc: CL
Comment 1 Telesto 2020-01-12 11:59:58 UTC
Created attachment 157083 [details]
Example file
Comment 2 Telesto 2020-01-12 12:00:53 UTC
A flamegraph would be nice
Comment 3 Julien Nabet 2020-01-12 12:47:49 UTC
Created attachment 157084 [details]
perf flamegraph

Here's a Flamegraph retrieved on pc Debian x86-64 with master sources updated today.
Comment 4 Xisco Faulí 2020-02-17 15:17:30 UTC
I can reproduce a short lag in

Version: 7.0.0.0.alpha0+
Build ID: 28d844a589e52abfe62dc66b888e78665221ba28
CPU threads: 4; OS: Linux 4.19; UI render: default; VCL: gtk3; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded

it hangs in

Version: 5.2.0.0.alpha1+
Build ID: 5b168b3fa568e48e795234dc5fa454bf24c9805e
CPU Threads: 4; OS Version: Linux 4.8; UI Render: default; 
Locale: ca-ES (ca_ES.UTF-8)
Comment 5 QA Administrators 2022-09-07 03:58:11 UTC Comment hidden (obsolete)
Comment 6 QA Administrators 2024-09-07 03:18:22 UTC
Dear Telesto,

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information from Help - About LibreOffice.
 
If the bug is NOT present, please set the bug's Status field to RESOLVED-WORKSFORME and leave a comment that includes the information from Help - About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular meaning that is not 
appropriate in this case)


If you want to do more to help you can test to see if your issue is a REGRESSION. To do so:
1. Download and install oldest version of LibreOffice (usually 3.3 unless your bug pertains to a feature added after 3.3) from https://downloadarchive.documentfoundation.org/libreoffice/old/

2. Test your bug
3. Leave a comment with your results.
4a. If the bug was present with 3.3 - set version to 'inherited from OOo';
4b. If the bug was not present in 3.3 - add 'regression' to keyword


Feel free to come ask questions or to say hello in our QA chat: https://web.libera.chat/?settings=#libreoffice-qa

Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team

MassPing-UntouchedBug