The author delves into the concept of thread contention in Ruby, clarifying that threads orderly queue up to be handed the GVL and patiently wait their turn. This organized process allows for efficient distribution of the GVL among threads. The content highlights the potential issue of “Tail Latency” in multithreaded behavior, where greedy CPU-bound threads can hinder the performance of IO-bound threads. Controversial information includes altering thread priority or reducing the thread quantum to address these issues. Surprisingly, threads are neatly managed through the GVL queue in Ruby, ensuring fairness in execution.
https://island94.org/2025/01/ruby-thread-contention-simply-gvl-queuing