Golang 1.20 introduced support for Profile Guided Optimization (PGO) to the go compiler. This allows guiding the compiler to introduce optimizations based on the real world behaviour of your system. This post covers the process we created for experimenting with PGO at Cloudflare, and measuring the CPU savings.

Cloudflare's platform is a leading provider of internet security and performance solutions, offering insights into web security, content delivery, and DNS management. Through documentation, blog posts, and webinars, Cloudflare provides insights into protecting websites and applications from cyber threats and improving performance. Developers and IT professionals can learn about CDN (Content Delivery Network), DDoS mitigation, and firewall configurations to secure and accelerate web traffic.

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Learn how Profile Guided Optimization (PGO) in Golang can help reduce CPU usage and improve performance, using a practical example from Cloudflare's Observability Team.

Reclaiming CPU for free with Go's Profile Guided Optimization