Moritz Beller

Learning to Learn to Predict Performance Regressions in Production at Meta

2023

Catching and attributing code change-induced performance regressions in production is hard; predicting them beforehand, even harder. A primer on automatically learning to predict performance regressions in software, this article gives an account of the experiences …

What's DAT? Three Case Studies of Measuring Software Development Productivity at Meta With Diff Authoring Time

2026

This paper introduces Diff Authoring Time (DAT), a precise, yet conceptually simple approach to measuring software development productivity that enables rigorous experimentation. DAT is a time-based metric, which assesses how much active work time engineers …