# CPU Core Affinity ⎊ Definition

**Published:** 2026-06-05
**Author:** Greeks.live
**Categories:** Definition

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## CPU Core Affinity

CPU Core Affinity is a technique used to bind a specific software process or thread to a particular CPU core. By preventing the operating system from moving a process between different cores, it reduces cache misses and improves the performance of time-sensitive applications.

In trading systems, pinning the order processing thread to a dedicated, isolated core ensures that the thread has consistent access to CPU resources, minimizing latency spikes caused by context switching. This is a common optimization for low-latency trading applications where every microsecond counts.

It provides a more predictable execution environment by reducing interference from other system processes. CPU core affinity is a powerful tool for squeezing maximum performance out of trading hardware.

- [Symbolic Value Propagation](https://term.greeks.live/definition/symbolic-value-propagation/)

- [L3 Cache Contention](https://term.greeks.live/definition/l3-cache-contention/)

- [Protocol Parameter Change](https://term.greeks.live/definition/protocol-parameter-change/)

- [Emergency Response Protocol](https://term.greeks.live/definition/emergency-response-protocol/)

- [Data Alignment Penalties](https://term.greeks.live/definition/data-alignment-penalties/)

- [Processor Affinity](https://term.greeks.live/definition/processor-affinity/)

- [CPU Pipeline Stalls](https://term.greeks.live/definition/cpu-pipeline-stalls/)

- [Consensus Ruleset Evolution](https://term.greeks.live/definition/consensus-ruleset-evolution/)

## Glossary

### [Multi-Core Blockchain Processing](https://term.greeks.live/area/multi-core-blockchain-processing/)

Architecture ⎊ Distributed ledger technology typically operates on sequential validation, which creates bottlenecks for high-frequency trading and complex financial derivatives.

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**Original URL:** https://term.greeks.live/definition/cpu-core-affinity/