System Jitter

System Jitter is the variation in the timing of events within a system, often caused by software interrupts, hardware delays, or network congestion. In the context of high-frequency trading, jitter is a major source of non-deterministic behavior that can negatively impact execution performance.

A system with high jitter is unreliable, as it makes it difficult to predict when an order will be executed. This can lead to missed opportunities or increased risk exposure.

Developers strive to minimize jitter by using techniques like real-time operating systems, kernel bypass, and dedicated hardware. Monitoring and measuring jitter is a key part of performance tuning for any trading system.

By identifying the sources of jitter, engineers can implement strategies to reduce or eliminate them, resulting in a more consistent and reliable system. It is a critical metric for evaluating the quality and performance of a trading architecture.