Interrupt Affinity

Interrupt affinity is the configuration of which CPU cores are responsible for handling hardware interrupts, such as those from a network card. By directing these interrupts to specific cores, developers can prevent them from interfering with the main trading threads.

This helps in maintaining the performance of the trading logic and reduces jitter. It is a more granular form of resource management that complements CPU core pinning.

Proper configuration of interrupt affinity is essential for building a balanced and responsive trading system. It allows the system to handle high volumes of incoming data without compromising the performance of the core trading engine.