TWO THREADS, ONE CORE: HOW SIMULTANEOUS MULTITHREADING WORKS UNDER THE HOOD

Summary from the TLDR Web Dev newsletter

This article explains how Simultaneous Multithreading (SMT) works in modern CPUs. SMT enables a processor to handle instructions from two different threads simultaneously by duplicating certain resources and sharing others. This can improve resource utilization and system throughput, but also introduces potential performance issues due to resource competition and security vulnerabilities.