Bug 1535573 - Change note about use counters on release r=gfritzsche
authorJan-Erik Rediger <jrediger@mozilla.com>
Fri, 15 Mar 2019 14:55:42 +0000
changeset 522051 eca35ef284c1b73bc29bd086180c5fb33f5f2ba7
parent 522050 31dc14d0b906b79c5feb63a745bb05a71b93160b
child 522052 d83d3c63a428e137fcd18b8c4b1905c79f97d703
push id10871
push usercbrindusan@mozilla.com
push dateMon, 18 Mar 2019 15:49:32 +0000
treeherdermozilla-beta@018abdd16060 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersgfritzsche
bugs1535573
milestone67.0a1
first release with
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
last release without
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
Bug 1535573 - Change note about use counters on release r=gfritzsche Differential Revision: https://phabricator.services.mozilla.com/D23649
toolkit/components/telemetry/docs/collection/use-counters.rst
--- a/toolkit/components/telemetry/docs/collection/use-counters.rst
+++ b/toolkit/components/telemetry/docs/collection/use-counters.rst
@@ -67,17 +67,17 @@ The processor script
 ====================
 The definition files are processed twice:
 
 - once to generate two C++ headers files, included by the web platform components (e.g. DOM) that own the features to be tracked;
 - the other time by the Telemetry component, to generate the histogram definitions that make the collection system work.
 
 .. note::
 
-    The histograms that are generated out of use counters are set to *never* expire and are *opt-in*.
+    The histograms that are generated out of use counters are set to *never* expire and are collected from Firefox release. Note that before Firefox 65 they were only collected on pre-release.
 
 gen-usecounters.py
 ------------------
 This script is called by the build system to generate:
 
 - the ``PropertyUseCounterMap.inc`` C++ header for the CSS properties;
 - the ``UseCounterList.h`` header for the WebIDL, out of the definition files.