Multithreading: The Wrong Design?
This article challenges the common misconception that multithreading always improves performance. The author argues that modern CPUs don't operate as a shared memory model as often taught, and multithreading introduces significant overhead due to cache coherence issues and synchronization primitives, leading to performance degradation and increased complexity. Duplicating single-threaded code across multiple cores is presented as a more efficient approach, leveraging CPU time more effectively and resulting in simpler, more maintainable code. The author advocates for single-threaded designs like Node.js and Actor models as superior for utilizing modern CPU resources, despite the perception that multithreading is a more sophisticated approach.
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