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Telemetry Alert for WEBEXT_STORAGE_LOCAL_IDB_SET_MS on 2019-10-12
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telemetr...@mozilla.com
Oct 16, 2019, 1:37:11 AM10/16/19
to addons-de...@mozilla.com, lgr...@mozilla.com, dev-teleme...@lists.mozilla.org
We have detected a change in the Telemetry probe WEBEXT_STORAGE_LOCAL_IDB_SET_MS in Firefox Nightly builds from 2019-10-12.
Alert details: http://alerts.telemetry.mozilla.org/index.html#/detectors/1/metrics/2667/alerts/?from=2019-10-12&to=2019-10-12
Changes new to Nightly builds on 2019-10-12: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=c5e6477c3a245a97d4c3cdd5d3e406f8abaf94ad&tochange=9afd613bcbee09992cd2537f4bf8ddc6d761e9cf
The value of WEBEXT_STORAGE_LOCAL_IDB_SET_MS over time: https://telemetry.mozilla.org/new-pipeline/evo.html#!measure=WEBEXT_STORAGE_LOCAL_IDB_SET_MS
What to do about this:
1. File a bug to track your investigation. You can just copy this email into the bug Description to get you started.
2. Reply-All to this email to let the list know that you are investigating. Include the bug number so we can help out.
3. Triage the alert. You can find instructions here: https://docs.telemetry.mozilla.org/tools/alerts.html#triaging-a-telemetry-alert-email
If you have any problems, please ask for help on the #telemetry IRC channel or on Slack in #fx-metrics. We'll give you a hand.
What this is:
We have a system called cerberus[1] that compares Telemetry collected on different Nightly builds and looks for sudden changed in value distributions using the Bhattacharyya Distance[2]. It found such a change in WEBEXT_STORAGE_LOCAL_IDB_SET_MS on 2019-10-12 so it asked its buddy medusa[3] to send this email to the dev-telemetry-alerts mailing list and to all email addresses listed in the alert_emails field of WEBEXT_STORAGE_LOCAL_IDB_SET_MS's definition.
You can do this!
Your Friendly, Neighbourhood Firefox Telemetry Team
[1]: https://github.com/mozilla/cerberus
[2]: https://en.wikipedia.org/wiki/Bhattacharyya_distance
[3]: https://github.com/mozilla/medusa
Alert details: http://alerts.telemetry.mozilla.org/index.html#/detectors/1/metrics/2667/alerts/?from=2019-10-12&to=2019-10-12
Changes new to Nightly builds on 2019-10-12: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=c5e6477c3a245a97d4c3cdd5d3e406f8abaf94ad&tochange=9afd613bcbee09992cd2537f4bf8ddc6d761e9cf
The value of WEBEXT_STORAGE_LOCAL_IDB_SET_MS over time: https://telemetry.mozilla.org/new-pipeline/evo.html#!measure=WEBEXT_STORAGE_LOCAL_IDB_SET_MS
What to do about this:
1. File a bug to track your investigation. You can just copy this email into the bug Description to get you started.
2. Reply-All to this email to let the list know that you are investigating. Include the bug number so we can help out.
3. Triage the alert. You can find instructions here: https://docs.telemetry.mozilla.org/tools/alerts.html#triaging-a-telemetry-alert-email
If you have any problems, please ask for help on the #telemetry IRC channel or on Slack in #fx-metrics. We'll give you a hand.
What this is:
We have a system called cerberus[1] that compares Telemetry collected on different Nightly builds and looks for sudden changed in value distributions using the Bhattacharyya Distance[2]. It found such a change in WEBEXT_STORAGE_LOCAL_IDB_SET_MS on 2019-10-12 so it asked its buddy medusa[3] to send this email to the dev-telemetry-alerts mailing list and to all email addresses listed in the alert_emails field of WEBEXT_STORAGE_LOCAL_IDB_SET_MS's definition.
You can do this!
Your Friendly, Neighbourhood Firefox Telemetry Team
[1]: https://github.com/mozilla/cerberus
[2]: https://en.wikipedia.org/wiki/Bhattacharyya_distance
[3]: https://github.com/mozilla/medusa
Luca Greco
Oct 16, 2019, 9:07:31 AM10/16/19
to telemetr...@mozilla.com, addons-dev-internal, dev-teleme...@lists.mozilla.org
Filed on bugzilla as Bug 1589049 - Telemetry Alert for
WEBEXT_STORAGE_LOCAL_IDB_SET_MS on 2019-10-12
<https://bugzilla.mozilla.org/show_bug.cgi?id=1589049>
WEBEXT_STORAGE_LOCAL_IDB_SET_MS on 2019-10-12
<https://bugzilla.mozilla.org/show_bug.cgi?id=1589049>
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