1811567 - Remove RFP Restrictions on the Performance APIs

Status: RESOLVED FIXED

(Core :: DOM: Performance APIs, enhancement)

Description

[Tom Ritter [:tjr]]

Some performance APIs are disabled or return empty data when RFP is enabled. This causes compatibility problems and is not leaking any new information as the timestamps exposed are clamped/jittered the same as all other timestamps. Remove the restrictions on them, with the exception of the ones in Bug 1811566 which can obscure actual fingerprintable information.

Comment 1

[Tom Ritter [:tjr]]

Attachment: Bug 1811567: Remove unnecessary restrictions on APIs when RFP is enabled r?smaug

Comment 2

[Tom Ritter [:tjr]]

Attachment: Bug 1811567: Test updates for RFP precision restriction updates r?smaug

Depends on D167444

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a84bc3fe9d63
Remove unnecessary restrictions on APIs when RFP is enabled r=smaug
https://hg.mozilla.org/integration/autoland/rev/ea9b2ad4d519
Test updates for RFP precision restriction updates r=smaug

Comment 4

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/a84bc3fe9d63
https://hg.mozilla.org/mozilla-central/rev/ea9b2ad4d519

Comment 5

[Thorin [:thorin]]

Attachment: perf.png

So IIUIC, performance.mark now exposes 1ms precision

Comment 6

[Tom Ritter [:tjr]]

(In reply to Simon Mainey from comment #5)

Created attachment 9314775 [details]
perf.png

So IIUIC, performance.mark now exposes 1ms precision

Hm. That doesn't seem right, but it's not immediately obvious to me why. I filed Bug 1813599. Maybe it's coming from here?