1688850 - Add telemetry about 0RTT

Status: RESOLVED FIXED

(Core :: Networking: HTTP, task, P2)

Description

[Dragana Damjanovic [:dragana]]

We are interested in:

• 0RTT rejection rate
• duration of 0RTT, especially how long it takes to reject 0RTT data

Comment 1

[Dragana Damjanovic [:dragana]]

Telemetry probes:

• HTTP3_0RTT_STATE:
  -- per connection
  -- values: 0rtt_not_used, 0rtt_used_success, 0rtt_used_rejected, 0rtt_used_conn_error (connection error before the connection is connected)

• HTTP3_0RTT_STATE_DURATION:
  -- per connection
  -- time between the connection start and end of 0RTT sate or a connection failure
  -- keyed histogram: 0rtt_used_success, 0rtt_used_rejected, 0rtt_used_conn_error

Comment 2

[Dragana Damjanovic [:dragana]]

Attachment: Telemetry about HTTP3 0RTT usage

Comment 3

[Dragana Damjanovic [:dragana]]

Attachment: request_1688850.md

Comment 4

[Megan McCorquodale]

Comment on attachment 9200507 [details]
request_1688850.md

1. Is there or will there be documentation that describes the schema for the ultimate data set in a public, complete, and accurate way?
   This will be documented in the probe dictionary.

2. Is there a control mechanism that allows the user to turn the data collection on and off?
   Users can opt out of telemetry collection.

3. If the request is for permanent data collection, is there someone who will monitor the data over time?
   Dragana Damjanovic will monitor.

4. Using the category system of data types on the Mozilla wiki, what collection type of data do the requested measurements fall under?
   Category 1, Technical data.

5. Is the data collection request for default-on or default-off?
   Default on.

6. Does the instrumentation include the addition of any new identifiers?
   No new identifiers.

7. Is the data collection covered by the existing Firefox privacy notice?
   Yes.

8. Does there need to be a check-in in the future to determine whether to renew the data?
   No.

9. Does the data collection use a third-party collection tool?
   No.

---

data-review +

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/4b205018ddcf
Telemetry about HTTP3 0RTT usage r=necko-reviewers,valentin

Comment 6

[Atila Butkovits]

https://hg.mozilla.org/mozilla-central/rev/4b205018ddcf