Recent answers to How to disable multiple task manager processes?https://support.mozilla.org/mk/questions/12654722019-10-30T05:38:22-07:00I personally don't care what the reasons for multiple processes are, I just want to get rid of them.2019-10-30T05:38:22-07:00benmillanhttps://support.mozilla.org/mk/questions/1265472#answer-1262633<p>I personally don't care what the reasons for multiple processes are, I just want to get rid of them.
</p><p>Firefox harasses me to update it, then I can no longer use it because it's hogging all of my system resources. I had it fixed before, then made the mistake of updating again, and so on, for about the past two years.
</p><p>If this can't be fixed, then I'm sure as hell not going to sink a few thousand into a newer PC just so I can use what I already had.
</p><p>I tried the about:config menu, tried environment variables, tried the command prompt, tried rebooting and did a couple full malware scans.
</p><p>Firefox is STILL hogging system resources, and it's so bad that I can't even watch a video.
</p><p>If no one knows of a good, PERMANENT solution, then does anyone know of another privacy-friendly browser that doesn't do this?
</p><p>Someone please help!!!
</p>McCoy said
Hello BigJohnny,
Multi-process (e10s) can no longer be disabled on the "about:conf2019-10-30T05:29:19-07:00benmillanhttps://support.mozilla.org/mk/questions/1265472#answer-1262632<p><em>McCoy <a href="#answer-1240246" rel="nofollow">said</a></em>
</p>
<blockquote>
Hello BigJohnny,
Multi-process (e10s) can no longer be disabled on the "about:config" page - see&nbsp;:
<a href="https://techdows.com/2019/05/mozilla-firefox-68-doesnt-allow-turning-off-e10s.html" rel="nofollow">https://techdows.com/2019/05/mozilla-firefox-68-doesnt-allow-turning-off-e10s.html</a>
If however, you really want to disable it, you can set an environment variable to disable multi-process.&nbsp;:<br>
• set MOZ_FORCE_DISABLE_E10S=1<br>
How to set environment variables&nbsp;:
<a href="http://www.computerhope.com/issues/ch000549.htm" rel="nofollow">http://www.computerhope.com/issues/ch000549.htm</a>
You can use the set command to create a temporary environment variable.
<ul><li> open command prompt window
</li><li> change to installation directory
</li><li> type "set MOZ_FORCE_DISABLE_E10S=1" and press enter
</li><li> type "firefox.exe" and press enter
</li></ul>
How to use set command&nbsp;:
<a href="http://www.computerhope.com/sethlp.htm" rel="nofollow">http://www.computerhope.com/sethlp.htm</a>
<hr>
<p>Or you could set an environment variable in the Windows Control Panel =&gt; System.
</p><p>You can create a firefox-e10s.cmd file with this content:
</p><p>set MOZ_FORCE_DISABLE_E10S=1
start "" "&lt;path_to_firefox&gt;\firefox.exe"
</p><p>• (64-bit Firefox) "C:\Program Files\Mozilla Firefox\"
• (32-bit Firefox) "C:\Program Files (x86)\Mozilla Firefox\"
</p><p>(edit: typo)
</p>
</blockquote>
<p>I tried this and it doesn't work.
</p>I expect a league-leading browser like Firefox to accommodate ALL its long-term users - even on low-2019-08-25T11:48:32-07:00BillMayhewhttps://support.mozilla.org/mk/questions/1265472#answer-1246728<p>I expect a league-leading browser like Firefox to accommodate ALL its long-term users - even on low-end laptops - WITHOUT *workarounds* like environment variables. Firefox should be able to tell when it's running on single-core machines and STOP adding MULTIPLE PROCESSES to the workload,
</p><p>VERY TACKY, Mozilla!!!
</p>^ Quote; To disable multi processes go to `about:config?filter=browser.tabs.remote.autostart` and ma2019-08-20T05:18:42-07:00cor-elhttps://support.mozilla.org/mk/questions/1265472#answer-1245676<p>^ Quote; <em>To disable multi processes go to `about:config?filter=browser.tabs.remote.autostart` and make sure to change the value to `false`, after you've done that, restart firefox.</em>
</p><p>That is not correct.
In Firefox 68 and later you can no longer disable multi-process via a pref.
As posted above, you need to use an environment variable (MOZ_FORCE_DISABLE_E10S=1).
</p>Bill Mayhew said
6 processes on a single-core CPU are a bit much... esp. when you add in all the W2019-08-20T02:29:30-07:00eldar1810https://support.mozilla.org/mk/questions/1265472#answer-1245643<p><em>Bill Mayhew <a href="#answer-1245474" rel="nofollow">said</a></em>
</p>
<blockquote>
6 processes on a single-core CPU are a bit much... esp. when you add in all the Windows disServices&nbsp;;) ... I currently have 13 svchost.exe's .
But, good news... performance mysteriously improved, now 90%+ idle. (68.0.1 64-bit)
But I still have 6 firefox.exe's... mysteriously only using a total of 7% CPU... which I can live with.
</blockquote>
<p>if you're think you've a malware running in your pc you can try to perform a scan with freeware portable tool called adwcleaner.
</p><p>To disable multi processes go to `about:config?filter=browser.tabs.remote.autostart` and make sure to change the value to `false`, after you've done that, restart firefox.
</p>6 processes on a single-core CPU are a bit much... esp. when you add in all the Windows disServices&2019-08-19T10:50:38-07:00BillMayhewhttps://support.mozilla.org/mk/questions/1265472#answer-1245474<p>6 processes on a single-core CPU are a bit much... esp. when you add in all the Windows disServices&nbsp;;) ... I currently have 13 svchost.exe's .
</p><p>But, good news... performance mysteriously improved, now 90%+ idle. (68.0.1 64-bit)
</p><p>But I still have 6 firefox.exe's... mysteriously only using a total of 7% CPU... which I can live with.
</p>I got a half-dozen firefox.exe processes on my laptop after updating to 68.
Is this my payback for k2019-08-11T06:19:59-07:00BillMayhewhttps://support.mozilla.org/mk/questions/1265472#answer-1243697<p>I got a half-dozen firefox.exe processes on my laptop after updating to 68.
</p><p>Is this my payback for keeping Firefox (manually) updated??
</p><p>(NOT a happy camper, but at least it's still (nominally) working...)
</p>It is quite normal to see more Firefox processes running.
one process for the main Firefox thread (2019-07-27T10:24:10-07:00cor-elhttps://support.mozilla.org/mk/questions/1265472#answer-1240677<p>It is quite normal to see more Firefox processes running.
</p>
<ul><li>one process for the main Firefox thread (user interface)
</li><li>one or more content processes (default is 8), see:<br>Options/Preferences -&gt; General -&gt; Performance<br>remove checkmark: [ ] "Use recommended performance settings"
</li><li>one process for the compositor thread
</li><li>one process for the WebRender when this feature is enabled
</li></ul>
<p>You can find the current multi-process state on the Troubleshooting Information page (about:support).
</p>
<ul><li>"Help -&gt; Troubleshooting Information" -&gt; "Application Basics":<br>Multiprocess Windows<br>Remote Processes
</li></ul>
<p>See also the Remote Processes section further down for more detail.
</p>so is there a reason it uses so many processes? I'm looking at 12 processes right now.
if I use just2019-07-27T09:37:52-07:00BigJohnnyhttps://support.mozilla.org/mk/questions/1265472#answer-1240671<p>so is there a reason it uses so many processes? I'm looking at 12 processes right now.
if I use just one process it ends up taking up to about 4 million kb of memory, but it's using about the same or more with all the processes as well
</p>Hello BigJohnny,
Multi-process (e10s) can no longer be disabled on the "about:config" page - 2019-07-25T03:41:20-07:00McCoy-therealhttps://support.mozilla.org/mk/questions/1265472#answer-1240246<p>Hello BigJohnny,
</p><p>Multi-process (e10s) can no longer be disabled on the "about:config" page - see&nbsp;:
</p><p><a href="https://techdows.com/2019/05/mozilla-firefox-68-doesnt-allow-turning-off-e10s.html" rel="nofollow">https://techdows.com/2019/05/mozilla-firefox-68-doesnt-allow-turning-off-e10s.html</a>
</p><p>If however, you really want to disable it, you can set an environment variable to disable multi-process.&nbsp;:<br>
• set MOZ_FORCE_DISABLE_E10S=1<br>
How to set environment variables&nbsp;:
<a href="http://www.computerhope.com/issues/ch000549.htm" rel="nofollow">http://www.computerhope.com/issues/ch000549.htm</a>
</p><p>You can use the set command to create a temporary environment variable.
</p>
<ul><li> open command prompt window
</li><li> change to installation directory
</li><li> type "set MOZ_FORCE_DISABLE_E10S=1" and press enter
</li><li> type "firefox.exe" and press enter
</li></ul>
<p>How to use set command&nbsp;:
<a href="http://www.computerhope.com/sethlp.htm" rel="nofollow">http://www.computerhope.com/sethlp.htm</a>
</p>
<hr>
<p>Or you could set an environment variable in the Windows Control Panel =&gt; System.
</p><p>You can create a firefox-e10s.cmd file with this content:
</p><p>set MOZ_FORCE_DISABLE_E10S=1
start "" "&lt;path_to_firefox&gt;\firefox.exe"
</p><p>• (64-bit Firefox) "C:\Program Files\Mozilla Firefox\"
• (32-bit Firefox) "C:\Program Files (x86)\Mozilla Firefox\"
</p><p>(edit: typo)
</p>