Optimal Values for "Total Threads" and "Chunk Size" of Absence Batch Parameters

Summary:
Hello,

Under "Configure Absence Batch Parameters", I understand that "Total Threads" and "Chunk Size" should be based on the population. However, how to know total available threads in Fusion instance? Are they static for all Fusion environments?

For the example mentioned here: "https://appslab.blogspot.com/2019/05/hcm-payroll-extracts-performance.html#:~:text=Threads%20are%20a%20number%20of,before%20retrieving%20the%20next%20chunk.", for 24000 employees, recommended total threads are 24000/400=60 and chunk size is 400. But will the system have 60 threads available to run the process efficiently?

As per Oracle Doc ID 2153518.1, total threads for Absence are recommended between 5 to 8 and chunk size between 20 to 30. This document was published in 2016 so I believe there must be some updates.