Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

Re-enable multi-E10S when not debugging ServiceWorkers?

  • 2 iimpendulo
  • 1 inayo le ngxaki
  • 27 views
  • Impendulo yokugqibela ngu cor-el

Ambient.Impact
Ambient.Impact
more options

When I started experimenting with ServiceWorkers in Firefox Developer Edition recently, I consented to disabling multi-E10S, but now it seems to be stuck on disabled even when I don't have about:debugging open and debugging a ServiceWorker. I've tried changing a few of the prefs in about:config as suggested for accessibility stuff that may disable it, but no luck. I'd love to get my performance back. :|

Bug for reference: https://bugzilla.mozilla.org/show_bug.cgi?id=1345932

When I started experimenting with ServiceWorkers in Firefox Developer Edition recently, I consented to disabling multi-E10S, but now it seems to be stuck on disabled even when I don't have about:debugging open and debugging a ServiceWorker. I've tried changing a few of the prefs in about:config as suggested for accessibility stuff that may disable it, but no luck. I'd love to get my performance back. :| Bug for reference: https://bugzilla.mozilla.org/show_bug.cgi?id=1345932

All Replies (2)

Wesley Branton
Wesley Branton
more options

Have you tried setting the browser.tabs.remote.autostart preference to true? There may also be some sub-preferences like browser.tabs.remote.autostart.2 that should also be set to true.

NOTE: You will need to restart Firefox in order for the changes to take effect.
cor-el
cor-el
  • Top 25 Contributor
  • Moderator
more options

Only browser.tabs.remote. is used in current Firefox releases. If there are still other bold autostart prefs then you can reset them via the right-click context menu.

Maybe check this pref:

  • dom.ipc.processCount

Ilungisiwe ngu cor-el