performance-metrics.md

DSP Performance Metrics

This document defines recommended engineering metrics for DSP benchmarking.

Throughput metrics

Metric	Meaning
MSamples/s	processed sample throughput
MB/s	memory-oriented throughput
Real-time factor	realtime feasibility

CPU efficiency metrics

Metric	Meaning
cycles/sample	computational efficiency
SIMD gain	acceleration effectiveness
cache sensitivity	memory behavior

Numerical metrics

Metric	Meaning
RMS error	average implementation deviation
max absolute error	overflow visibility
SNR degradation	signal-quality preservation

Benchmark environment

Reports should document:

• CPU model;
• compiler version;
• optimization flags;
• SIMD configuration;
• operating system.

Reporting principle

Performance claims should be reproducible and generated from scripts rather than manually edited values.