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Treeherder is a reporting dashboard for checkins to Mozilla projects (for example, mozilla-central). It allows users to see the results of automatic builds and their respective tests. Treeherder also provides a rich set of APIs that can be used by other projects interested in this information.

Treeherder is the successor to TBPL.

For tracking performance data, see Treeherder's sister project, Perfherder.

For tracking intermittent test failures, see Intermittent Failures View.


To make UI-only changes, you only need to perform a very simple setup running a local webserver pointing at the production backend, described here. If you wish to hack on the backend, or the UI and backend together, you will instead need to set up a Vagrant environment, using these steps.

Source and Docs

  • UI & backend: Source / Docs
  • Treeherder data submission clients:
    • Pulse: Source / docs
    • (Python and Node submission support has been removed.)

Getting in touch

What we're working on

Assigned Treeherder bugs that have been modified in the last month. View on Bugzilla

Full Query
ID Priority Component Summary Assigned to
1499551 P1 Treeherder: Frontend Treeherder consuming much memory/RAM (and CPU due to GC/garbage collection?) Cameron Dawson [:camd]
1675594 P1 Treeherder: Infrastructure cycle_data task for treeherder data is not working Ionuț Goldan [:igoldan]
1677134 -- Treeherder: Frontend add pretty names for recently added platforms Sebastian Hengst [:aryx] (needinfo on intermittent or backout)
1674462 -- Treeherder: Log Parsing & Classification don't set a priority and severity for bugs filed for crashes in automation Sebastian Hengst [:aryx] (needinfo on intermittent or backout)
1673721 -- Treeherder: Log Parsing & Classification change severity of intermittent bugs reported with Treeherder's bugfiler to S4 Sebastian Hengst [:aryx] (needinfo on intermittent or backout)
1678123 -- Treeherder: Frontend Add a label for windows10-64-ccov-qr Kartikaya Gupta (
1671765 -- Treeherder: API Change django.conf.urls.url() to django.urls.re_path() Sparsh Bansal