Ruby Benchmark Results

DRANK

Comparing iteration times across 9 machine types on several public clouds.This site was borne of my continuous frustration at Speedshop of clients running on old generation AWS instances, when I knew "free speed" was on the table if they just upgraded to a newer generation. However, I could never quantify the speed boost. This page simply runs ruby-bench, a series of mostly CPU-bound benchmarks maintained by Ruby core and the YJIT developers. We run across multiple instances to reduce the effect of noisy neighbors.For Rails apps, the most relevant benchmark is likely shipit. Keep in mind that this benchmark likely still overstates the performance difference because it runs the database in-memory, which makes the benchmark more CPU-bound than a real-world app with a real database.All benchmarks were run on December 22, 2025 and December 18, 2025 with YJIT enabled on Ruby 3.4.8. View the code for this page here.