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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# Adding a new metric? We have docs for that!
# https://firefox-source-docs.mozilla.org/toolkit/components/glean/user/new_definitions_file.html
---
$schema: moz://mozilla.org/schemas/glean/metrics/2-0-0
$tags:
- 'Core :: DOM: Performance'
performance.time:
response_start:
type: timing_distribution
time_unit: millisecond
telemetry_mirror: TIME_TO_RESPONSE_START_MS
description: >
Time from navigationStart to responseStart as per the W3C
Performance Timing API.
(Migrated from the geckoview metric of the same name.)
bugs:
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344893
- https://bugzilla.mozilla.org/show_bug.cgi?id=1489524
- https://bugzilla.mozilla.org/show_bug.cgi?id=1580077
- https://bugzilla.mozilla.org/show_bug.cgi?id=1877842
data_reviews:
- https://bugzilla.mozilla.org/show_bug.cgi?id=1580077#c10
notification_emails:
- vchin@mozilla.com
- perf-telemetry-alerts@mozilla.com
expires: never
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