Linux: Painting and saving painfully slow, freezes >20s

Issue type

Crash or freeze

Description with steps to reproduce

1. Open a document with more than 5 pages (but really depends on content)
2. Save

Takes up to 20s often

1. Open a document with more than 10 pages and 4-5 voices or more
2. Edit the layout (e.g. staff size, engraving rules, width using }, etc.

Wait 20s for one (!!) of the changes to be applied. Press } again to wait for another 20s.

Supporting files, videos and screenshots

21:14:58.774 | INFO  | main_thread     | MultiInstancesProvider::onMsg | "RESOURCE_CHANGED" 
21:14:59.732 | INFO  | main_thread     | MultiInstancesProvider::onMsg | "METHOD_QUITED" 
21:14:59.770 | INFO  | main_thread     | Profiler        | 

Main thread. Top 150 by sum time (total count: 254)
Function                                                    Call time         Call count        Sum time          
NotationProject::save                                       35046.720 ms      9                 315420.477 ms     
NotationProject::doSave                                     35045.435 ms      9                 315408.912 ms     
Score::doLayoutRange                                        184.499 ms        966               178225.772 ms     
ScoreLayout::layoutRange                                    184.487 ms        966               178214.707 ms     
ScorePageViewLayout::layoutPageView                         186.797 ms        954               178204.224 ms     
Score::update                                               1205.049 ms       145               174732.058 ms     
PageLayout::collectPage                                     16.343 ms         10307             168446.155 ms     
SystemLayout::collectSystem                                 3.827 ms          43900             167992.056 ms     
NotationProject::writeProject                               14180.480 ms      9                 127624.320 ms     
EngravingProject::writeMscz                                 10007.958 ms      9                 90071.619 ms      
MscSaver::writeMscz                                         10007.956 ms      9                 90071.606 ms      
Writer::writeScore                                          184.268 ms        365               67257.656 ms      
Writer::write                                               184.242 ms        365               67248.166 ms      
MeasureLayout::getNextMeasure                               0.361 ms          178152            64266.056 ms      
ProjectAutoSaver::onTrySave                                 2019.178 ms       28                56536.977 ms      
HorizontalSpacing::updateSpacingForLastAddedMeasure         0.096 ms          302888            29164.767 ms      
SystemLayout::layoutSystemElements                          0.692 ms          29636             20514.476 ms      
ChordLayout::layoutChords1                                  0.004 ms          4659036           19877.381 ms      
ChordLayout::layoutStem                                     0.002 ms          11109028          19270.867 ms      
HorizontalSpacing::computeSpacingForFullSystem              0.527 ms          29624             15613.161 ms      
BeamLayout::layout                                          0.022 ms          643209            14386.099 ms      
MasterNotationParts::replaceInstrument                      2789.033 ms       5                 13945.167 ms      
BeamLayout::layout2                                         0.021 ms          643209            13449.243 ms      
NotationParts::insertPart                                   3080.394 ms       4                 12321.578 ms      
NotationParts::setPartSharpFlat                             2753.225 ms       4                 11012.902 ms      
BeamLayout::createBeams                                     0.067 ms          163167            10940.545 ms      

and

Other threads. Top 150 by sum time (total count: 23)
Function                                                    Call time         Call count        Sum time          
AbstractNotationPaintView::paint                            27.672 ms         2294              63478.860 ms      
NotationPainting::doPaint                                   27.384 ms         2292              62763.894 ms      
Paint::paintScore                                           27.346 ms         2292              62676.761 ms      
Paint::paintItems                                           6.033 ms          8631              52072.422 ms      
Paint::paintItem                                            0.005 ms          10830814          48797.689 ms      
NotationNavigator::paint                                    134.260 ms        197               26449.180 ms      
NotationPainting::paintPageSheet                            0.338 ms          8631              2914.064 ms       

In which versions of MuseScore Studio is this issue present?

Since v3, but I cannot tell the exact version. Still present as of today and nighlies.

Regression

Yes, this used to work in MuseScore 3.x and now is broken

Operating system

Linux, 6.17.4-arch2-1

Additional context

I saw this happen somewhere in the 3.x range, but it is not getting better. Videos can be attached. MuseSounds does not have anything to do with it.

This makes a lot of drag/n/drop operations impossible.

What I observed: Only one processor core is ever used, CPU usage for mscore is never >100%.

I tried:

• AppImages
• Arch Linux AUR native builds

If you need anything else, let me know. I have basic knowledge of running most debugging commands and might know a bit about coding. ;)

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible