Packet Steering

Packet steering is the process of directing incoming network traffic to specific CPU cores for processing. In the context of high-frequency trading, this ensures that market data and order execution messages are handled by dedicated, high-performance cores.

By avoiding core migration, the system maintains cache locality and prevents the performance penalties associated with context switching. This is vital for managing the complex order flow of crypto derivatives exchanges.

Advanced steering techniques like Receive Side Scaling or Flow Director allow for granular control over traffic distribution. This prevents any single core from becoming a bottleneck during periods of high market activity.

It is a foundational element of scalable trading architectures. Effective steering leads to more predictable and lower latency processing.

It is a key strategy for maximizing the performance of multi-core trading servers.