Noah Gibbs

Posts

• 2023-08-25 • Noah Gibbs

  We Turned Lobste.rs into a Rails Benchmark for YJIT

  We’re very proud of how well YJIT, the default JIT in CRuby, optimizes Rails apps. We’ve been using small Rails benchmarks for a couple of years. But as YJIT improves we need more data from real world apps to help us understand what will speed up Ruby the most. We turned the Lobsters codebase into a nice new benchmark. So how did we do that?

• 2023-08-25 • Noah Gibbs

  How We Used a SQLite Memory DB for Rails Benchmarking

  Here at Shopify, we recently adapted the Lobste.rs source code into a Rails benchmark for YJIT. But we want very little database time in our benchmarks, since we’re trying to optimise Ruby. One way to do that is to use SQLite rather than a separate database like MySQL or PostgresSQL. In fact, faster yet is an in-memory SQLite database. It doesn’t even write to disk. But that’s an unusual setup, and wants some code to set it up. Want to see how we did it?