1626096 - Lock the dom.ipc.processCount.webIsolated pref

Status: RESOLVED FIXED

(Core :: DOM: Content Processes, task, P2)

Description

[Nika Layzell [:nika] (ni? for response)]

Changing this pref can cause serious breakage with fission, as multiple URLs from the same origin will not be sent to the same process. By locking the pref, we'll prevent people from accidentally breaking their experience.

Comment 1

[Nika Layzell [:nika] (ni? for response)]

Attachment: Bug 1626096 - Lock the dom.ipc.processCount.webIsolated pref,

Changing this pref can cause serious breakage with fission, as multiple URLs
from the same origin will not be sent to the same process. By locking the pref,
we'll prevent people from accidentally breaking their experience.

Comment 2

[Randell Jesup [:jesup] (needinfo me)]

I may end up removing this anyways, or making it irrelevant. The problem comes because of a quirk of the implementation and how it overlaps with the e10s impl

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/4fc9693263c1
Lock the dom.ipc.processCount.webIsolated pref, r=mccr8

Comment 4

[Stefan Hindli [:stefan_hindli]]

Backed out changeset 4fc9693263c1 (Bug 1626096) for perma bc failure in toolkit/modules/tests/browser/browser_Troubleshoot.js CLOSED TREE

https://treeherder.mozilla.org/#/jobs?repo=autoland&fromchange=bf611fbecbff871560bda3bed2933c4adbd1879a&searchStr=linux%2C18.04%2Cx64%2Casan%2Copt%2Cmochitests%2Ctest-linux1804-64-asan%2Fopt-mochitest-browser-chrome-e10s-3%2Cm%28bc3%29&selectedJob=295608492

https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=295608492&repo=autoland&lineNumber=4774

Comment 5

[Pulsebot]

Backout by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/ff273fd541a9
Backed out changeset 4fc9693263c1 for perma bc failure in toolkit/modules/tests/browser/browser_Troubleshoot.js CLOSED TREE

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/3c7d04112568
Lock the dom.ipc.processCount.webIsolated pref, r=mccr8

Comment 7

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/3c7d04112568