cpu-cache-opt

What problem does it solve?

This Skill helps diagnose and resolve performance bottlenecks caused by inefficient CPU cache utilization, such as cache misses and false sharing.

Core Features & Use Cases

• Cache Performance Measurement: Utilize perf to analyze cache references, misses, and latency across L1, L2, and L3 caches.
• Data Layout Optimization: Guides on structuring data using AoS vs. SoA layouts for improved cache locality.
• False Sharing Mitigation: Provides techniques to detect and prevent false sharing in multithreaded applications.
• Prefetching Strategies: Demonstrates how to use prefetch hints to hide memory latency.
• Use Case: Improve the speed of a data-intensive simulation by restructuring its data arrays to minimize cache misses.

Quick Start

Analyze cache performance for your program 'my_program' using perf stat with cache counters.