1448869 - Reduce Timer Resolution to 100us with Jitter

Status: RESOLVED FIXED

(Core :: DOM: Events, enhancement, P2)

Description

[Tom Ritter [:tjr] (OOTO until 4/30 at least)]

Given what we know about Spectre Variant attacks - in 60, now that we have Jitter, we can lower the Time Precision back down; we'll match Chrome's at 100 us.

Comment 1

[Tom Ritter [:tjr] (OOTO until 4/30 at least)]

Attachment: Bug 1448869 Set Timer Precision to 100 us (with Jitter)

Review commit: https://reviewboard.mozilla.org/r/231258/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/231258/

Comment 2

[Tom Ritter [:tjr] (OOTO until 4/30 at least)]

Attachment: Bug 1448869 Turn off jitter for some other wbeaudio tests

Review commit: https://reviewboard.mozilla.org/r/231304/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/231304/

Comment 3

[Tom Ritter [:tjr] (OOTO until 4/30 at least)]

Comment on attachment 8962405 [details]
Bug 1448869 Set Timer Precision to 100 us (with Jitter)

Review request updated; see interdiff: https://reviewboard.mozilla.org/r/231258/diff/1-2/

Comment 4

[Andrea Marchesini [:baku]]

Comment on attachment 8962405 [details]
Bug 1448869 Set Timer Precision to 100 us (with Jitter)

https://reviewboard.mozilla.org/r/231258/#review237016

Comment 5

[Andrea Marchesini [:baku]]

Comment on attachment 8962477 [details]
Bug 1448869 Turn off jitter for some other wbeaudio tests

https://reviewboard.mozilla.org/r/231304/#review237018

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/ed5744c6c5c0
Set Timer Precision to 100 us (with Jitter) r=baku
https://hg.mozilla.org/integration/autoland/rev/fa87fd6d40bc
Turn off jitter for some other wbeaudio tests r=baku

Comment 7

[Eliza Balazs [:ebalazs_]]

https://hg.mozilla.org/mozilla-central/rev/ed5744c6c5c0
https://hg.mozilla.org/mozilla-central/rev/fa87fd6d40bc

Comment 8

[Ryan VanderMeulen [:RyanVM]]

Does this need an uplift request?

Comment 9

[Tom Ritter [:tjr] (OOTO until 4/30 at least)]

It will, but we're reconsidering what the best choice is here.

Comment 10

[Tom Ritter [:tjr] (OOTO until 4/30 at least)]

Superseded by Bug 1451790