RAPL
RAPL (Running Average Power Limit) is a hardware feature in modern Intel and AMD processors that provides an interface for monitoring and controlling CPU power consumption. It allows software to read real-time energy usage metrics and set power limits to manage thermal and performance characteristics. This is commonly used in data centers, high-performance computing, and energy-efficient applications to optimize power efficiency.
Developers should learn RAPL when working on performance-critical or energy-aware systems, such as cloud infrastructure, scientific computing, or embedded devices, to implement power management and thermal throttling. It is essential for optimizing server workloads, reducing operational costs in data centers, and ensuring system stability under varying thermal conditions.