9 best Ruby Performance Testing libraries in 2025

Benchmarking a piece of code is no easy task, you need to make sure that your code is running efficiently and there are no bottlenecks in the process. Performance testing simulates the expected performance of applications under real-life production conditions to identify and fix issues before they affect users. It consists of running software applications under a variety of conditions to make sure they perform correctly. This is the process of replicating production usage in a controlled environment and monitoring the application’s behavior and performance under real-life conditions. In the following kit we cover 8 best Ruby performance testing libraries for the year 2022 like em-proxy - EventMachine Proxy DSL for writing highperformance transparent; rspec-benchmark - Performance testing matchers for RSpec; logstash-performance-testing - Logstash performance testing tool.