Context Switching and Performance: What Every Developer Should Know
SMRTR summary
Context switching in operating systems can significantly impact performance due to direct and indirect costs. The direct cost involves saving and restoring process states, while indirect costs stem from lost CPU cache, TLB, pipeline, and branch predictor data. Modern hardware features like address space identifiers help mitigate some issues, but context switches can still cause performance penalties, especially for processes with large memory footprints.
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