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Fixed
Fixed in 2022.3.54f1, 6000.0.29f1, 6000.1.0a5
Votes
0
Found in
2021.3.43f1
2022.3.46f1
6000.0.17f1
6000.1.0a1
Issue ID
UUM-79514
Regression
No
[Linux] High CPU usage when Editor Interaction Mode is set to No Throttling and editor is in background
Reproductions steps:
1. Create a new project
2. Open any application which can be used to see process CPU usage
3. In the Editor, click Edit > Preferences > General
4. Set “Interaction Mode” to “No Throttling”
5. Click off of Unity to move it to the background
Expected results: The Editor has moderate CPU usage.
Actual results: The Editor is using nearly 100% of the CPU usage which makes the editor unresponsive on lower-end CPUs.
Reproduced with: 2021.3.43f1, 2022.3.46f1, 6000.0.17f1
Reproduced on: Ubuntu 22.04
Not reproduced on: Windows 10
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Resolution Note:
Perf measurements differ based on the tools used for measuring. For instance, if you look at task manager in windows and select the "Performance" tab you will see that, in fact, when "No Throttling" is enabled, CPU core usage spikes as it does in Linux. However, if you select the "Details" tab CPU usage for all of Unity.exe remains relatively low.
Resolution Note (fix version 6000.0.29f1):
Throttling now respects the "Interaction Mode" setting correctly when in the foreground and throttles CPU usage correctly when the editor is moved to the background.