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

Multiple processes running when they shouldn't be!

  • 5
  • 2
  • 1 view
  • Nzaghachi ikpeazụ nke McCoy

more options

I am tight for memory on my PC and have Firefox running a single process. I have made changes to the config (dom.ipc.processCount and remote.autostart), I have the content process limit set to one in the options and have the 'prevent accesibility services' box checked.

Yesterday 1 process, today 4 processes and my PC is currently using 99% of it's avaible CPU and memory - does anyone have any ideas why, and a fix for it?

Thanks

I am tight for memory on my PC and have Firefox running a single process. I have made changes to the config (dom.ipc.processCount and remote.autostart), I have the content process limit set to one in the options and have the 'prevent accesibility services' box checked. Yesterday 1 process, today 4 processes and my PC is currently using 99% of it's avaible CPU and memory - does anyone have any ideas why, and a fix for it? Thanks

All Replies (5)

more options

Hi Countbelisarius, Actually, 4-6 processes running is normal for Firefox at startup. Firefox has a built-in Safe Mode: Troubleshoot Firefox issues using Safe Mode to help determine why you are using so much memory and CPU.

more options

It is m6 understanding that setting processcount to 1 overrides this. But the essence of question is what changed overnight for Firefox to run multiple recesses and override the pricesscount value. Is there something else I need to change?

more options

Firefox 68 doesn't have the option from Firefox 48-67 to disable multiprocess -- if they still appear in about:config they are ignored now.

I think the minimum number of processes in multiprocess Firefox is 2-4 processes (when you have reduced content processes to 1, see: Firefox's performance settings).

more options

Here's an article on ghacks which might help: Multi-Process Firefox: everything you need to know

Can you expand memory in paging file or ready boost?

more options

Hello Countbelisarius,

You can no longer disable e10s on the "about:config" page, but you can set an environment variable:

MOZ_FORCE_DISABLE_E10S - 1

In this thread (you'll have to scroll down) is explained how :

http://custombuttons.sourceforge.net/forum/viewtopic.php?t=44997&p=95499