1743965 - Telemetry to measure HTTP/3 priorities

Status: RESOLVED FIXED

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

Description

[Dragana Damjanovic [:dragana]]

There is not a good way to know whether the server takes into account the client's priority suggestion or whether it is applying any kind of prioritization.

The only feedback there is from the server is the "priority" header. We will use this to isolate a subset of HTTP/3 connections that are more likely to apply priorities and measure their page load time and time to first paint. If we have enough data we will do an experiment to measure whether HTTP/3 priorities sent by the client improve performance.

Comment 1

[Dragana Damjanovic [:dragana]]

Attachment: Telemetry to measure the page load performance with HTTP/3 priorities

There is not a good way to know whether the server takes into account the client's priority suggestion or whether it is applying any kind of prioritization.

The only feedback there is from the server is the "priority" header. We will use this to isolate a subset of HTTP/3 connections that are more likely to apply priorities and measure their page load time and time to first paint. If we have enough data we will do an experiment to measure whether HTTP/3 priorities sent by the client improve performance.

Comment 2

[Dragana Damjanovic [:dragana]]

Attachment: request_1743965.md

Comment 3

[Chris H-C :chutten]

Comment on attachment 9253374 [details]
request_1743965.md

DATA COLLECTION REVIEW RESPONSE:

Is there or will there be documentation that describes the schema for the ultimate data set available publicly, complete and accurate?

Yes.

Is there a control mechanism that allows the user to turn the data collection on and off?

Yes. This collection is Telemetry so can be controlled through Firefox's Preferences.

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

No. This collection will expire in six months.

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.

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

Default on for all channels.

Does the instrumentation include the addition of any new identifiers?

No.

Is the data collection covered by the existing Firefox privacy notice?

Yes.

Does the data collection use a third-party collection tool?

No.

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Result: datareview+

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/137da30edff4
Telemetry to measure the page load performance with HTTP/3 priorities r=nhnt11

Comment 5

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/137da30edff4