Pinpoint: Regression Explorer

Pinpoint is a Python App Engine service for analyzing regressions.

Given a metric and commit range, it can narrow down a regression to a specific commit. It's designed to gracefully handle a variety of tough situations:

  • Noisy performance metrics.
  • Metrics that require “device affinity” (i.e. they may produce different numbers on different devices).
  • Flaky and failing tests.
  • Multiple regressions and improvements.
  • Commit ranges with thousands of commits.
  • Regressions in dependent repositories.

It also provides a UI for visualizing the raw result data and digging into the root causes. Users can adjust the parameters and test potential fixes.