4 ms·

Does this release actually enable Fission (process separation) by default? [1] I see it's still turned off in about:config [1]: https://hacks.mozilla.org/2021/

• prima-facie 5y ago
  To answer my own question: it doesn't, at least not on my system. I can see the Firefox child process count maxing at around 10 processes with the default fission.autostart set to false: > ps aux | grep "firefox.*childID" | wc -l > 10 Also the about:processes page shows some processes containing 'Shared tabs'. As soon as I flip fission.autostart to true it creates proper separate processes for each tab with the above ps aux command increasing the count as I open up tabs.
• cpeterso 5y ago
  Fission site isolation is not enabled by default in Firefox 94. Since this is a huge change, it's being slowly rolled out to all Firefox 94 users over the next four weeks to watch for bugs. It's already been enabled for 60% of Firefox Nightly users and 40% of Firefox Beta users for a few release cycles.
  • Aaronn 5y ago
    It would be nice if the release notes could be updated to say that. Right now it says > To better protect all Firefox users against side-channel attacks such as Spectre, we’ve introduced Site Isolation. We’ve got your back...errr...side!
    • cpeterso 5y ago
      I'll ask to update the release note.