What does "globalExecutorParallelism" do?

[Rad586]

In c2me-fabric-mc1.20.4-0.2.0+alpha.11.62, the defaultGlobalExecutorParallelismExpression is different from the one in 1.19.2.

In 1.20.4, the default value is 5, while in 1.19.2, it's 2.

What does globalExecutorParallelism do? Will a value too high or too low lag the game? Should I use 2, or 5?

Is there any relation between the chunk update threads in sodium and globalExecutorParallelism in C2ME?

[ishland]

What does globalExecutorParallelism do?

It controls the thread allocations and usually directly affects the thread count used by C2ME.

In c2me-fabric-mc1.20.4-0.2.0+alpha.11.62, the defaultGlobalExecutorParallelismExpression is different from the one in 1.19.2.

In 1.20.4, the default value is 5, while in 1.19.2, it's 2.

In 1.20.4 we introduced more optimizations and stability fixes, and we feel confident to make the thread allocation less conservative with these optimizations.
This default is calculated based on memory allocated to the game, the CPU thread count of the host, the OS and more.

Will a value too high or too low lag the game?

A value too high may make the game run out of memory or may make other tasks (such as rendering the game on your screen) slower. A value too low will make world generation and loading slower.

Should I use 2, or 5?

It is generally recommended to stick with the default provided by the version you are using unless you would like to tune the settings.

Is there any relation between the chunk update threads in sodium and globalExecutorParallelism in C2ME?

No. They are completely different.

[Rad586]

Thanks for your detailed answer!