Bug Description

When I am playing single player there is a cpu core always running at 100%. After some test I found out this is caused by "Integrated server watchdog" option, disable it make single player runs normally.
I have disabled watchdog in linux kernel parameter because it mess with my laptop's suspend, it may be the reason why this option goes wrong.
This option is default on, I suggest add a detection so when there is no watchdog in the system this option is default off.

Reproduction Steps

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Log File

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yep

Unable to reproduce this issue in the latest version of ModernFix (for 1.20.1/1.21); tested in a void world to minimize CPU usage from any other parts of the game. CPU usage is roughly 30% with or without ModernFix installed.

I have not touched minecraft since I opened this issue. Today I updated my mod and this problem is gone. If the mod didn't change the code related to watchdog then it could be some system setting that I changed somehow fixed it. This issue is no longer needed and I will close it.