Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

155,000k and growing ram extra process when only google search page open? "C:\Program Files\Mozilla firefox\firefox.exe" -contentproc --channel=922.0.2119166622

  • 2 àwọn èsì
  • 4 ní àwọn ìṣòro yìí
  • 4 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ mt0neg

more options

"C:\Program Files\Mozilla firefox\firefox.exe" -contentproc --channel=922.0.2119166622\619297451" -childID 1 -isForBrowser -intPrefs 5:50|6:-1|28:1000|33:20|34:10|43:128|44:10000|49:0|51:400|52:1|53:0|54:0|59:0|60:120|61:120|91:2|92:1|106:5000|117:0|119:0|13"

sometimes there is a similar entry with a childID 3 just reinstalled / updated adobe flash, very buggy behavior taking big disk, cpu and triggering crazy CPU fan action What is happening and how do I regain control of my machine.

"C:\Program Files\Mozilla firefox\firefox.exe" -contentproc --channel=922.0.2119166622\619297451" -childID 1 -isForBrowser -intPrefs 5:50|6:-1|28:1000|33:20|34:10|43:128|44:10000|49:0|51:400|52:1|53:0|54:0|59:0|60:120|61:120|91:2|92:1|106:5000|117:0|119:0|13" sometimes there is a similar entry with a childID 3 just reinstalled / updated adobe flash, very buggy behavior taking big disk, cpu and triggering crazy CPU fan action What is happening and how do I regain control of my machine.

All Replies (2)

more options

Current Firefox releases have multi-process windows enabled. You may see three or more Firefox processes running.

  • one process for the main Firefox thread (user interface)
  • one or more processes for content threads set via "Options/Preferences -> General -> Performance" (dom.ipc.processCount)
  • one process for the compositor thread (Windows)

You can look at "Multiprocess Windows" to see the current multi-process state.

  • "Help -> Troubleshooting Information" -> Application Basics: Multiprocess Windows

See also:


You can try to modify multi-process settings to see if this has effect.

  • set dom.ipc.processCount to 1 if it is currently set to a higher value (4)
  • disable multi-process windows in Firefox

You can disable multi-process windows in Firefox by setting these prefs to false on the about:config page.

  • browser.tabs.remote.autostart = false
  • browser.tabs.remote.autostart.2 = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

more options

Makes sense. What is the channel value and what are all those scary looking piped values about? 100+megs for an 'empty' page makes me feel insecure and not happy. I'm the sys admin, not the internet...