~/Library/Preferences/org.musescore.Musescore3.plist grew to 111Mbytes

• May 7, 2020 - 01:01

Over the last few days, I began to notice sluggish performance (delays in note-entry, noticeably longer launch times, etc) and higher-than-usual CPU, even though the piece I was working on was only a few pages of piano.

Today, the lag was such that the program was nearly unusable. I had re-installed the software yesterday, to no avail.

I was reading the handbook on resetting to factory defaults, which gave the path to the .plist file.

While making copy of it, when I noticed it was 111 MBytes.

I checked back through TimeMachine and saw that it grew from 8 KB in March, to ~450 KB around the beginning of April, to 7 MB mid-April. By the end of April, it had jumped to ~29 MBytes, and earlier today, 111.

I restored to an 8 KB .plist file, and the software is now running fine again.

Comments

• May 7, 2020 - 08:45

Thank you.
For the benefit of a future developer that might want to look into it. The majority of data here is stored as part of the MainWindow.state data. Which seems quite excessive for what it should be.

To compare, my ini-file is around 18kB currently in which the MainWindow.state variable is a ByteArray of around 800 bytes...

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• May 7, 2020 - 21:39

I wonder if that's why I get a "registry value too long in main video set" when I start MuseScore... Since preferences are saved in the registry under Windows, it may be doing weird things.

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