1861942 - Add telemetry to show when parallel marking was used

Status: RESOLVED FIXED

(Core :: JavaScript: GC, task, P3)

Description

[Jon Coppeard (:jonco)]

Parallel marking is only used for heaps over specified size (bug 1827621) and can be disabled with a pref. To evaluate GC telemetry effectively we need to know whether parallel marking was used.

Comment 1

[Jon Coppeard (:jonco)]

Attachment: Bug 1861942 - Add telemetry to show when parallel marking was used r?sfink

Comment 2

[Jon Coppeard (:jonco)]

Attachment: data_collection_request.txt

Requesting data review.

Comment 3

[Travis Long [:travis_]]

Comment on attachment 9360964 [details]
data_collection_request.txt

Data Review

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

Yes, through the Histograms.json file and the Probe Dictionary.

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

Yes, through the data preferences in the application settings.

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

Permanent collection to be monitored by Jon Coppeard

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 (whether anonymous or otherwise; e.g., username, random IDs, etc. See the appendix for more details)?

No

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

Yes

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

No

Result

data-review+

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9921e8691f4a
Add telemetry to show when parallel marking was used r=sfink

Comment 5

[Noemi Erli[:noemi_erli]]

https://hg.mozilla.org/mozilla-central/rev/9921e8691f4a