1 # This Source Code Form is subject to the terms of the Mozilla Public
2 # License, v. 2.0. If a copy of the MPL was not distributed with this
3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
5 # Adding a new metric? We have docs for that!
6 # https://firefox-source-docs.mozilla.org/toolkit/components/glean/user/new_definitions_file.html
9 $schema: moz://mozilla.org/schemas/glean/metrics/2-0-0
11 - 'Core :: DOM: Performance'
15 type: timing_distribution
16 time_unit: millisecond
17 telemetry_mirror: TIME_TO_RESPONSE_START_MS
19 Time from navigationStart to responseStart as per the W3C
20 Performance Timing API.
21 (Migrated from the geckoview metric of the same name.)
23 - https://bugzilla.mozilla.org/show_bug.cgi?id=1344893
24 - https://bugzilla.mozilla.org/show_bug.cgi?id=1489524
25 - https://bugzilla.mozilla.org/show_bug.cgi?id=1580077
26 - https://bugzilla.mozilla.org/show_bug.cgi?id=1877842
28 - https://bugzilla.mozilla.org/show_bug.cgi?id=1580077#c10
31 - perf-telemetry-alerts@mozilla.com