We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Version 7.0.1 has high CPU

  • 8 uphendule
  • 43 zinale nkinga
  • 3 views
  • Igcine ukuphendulwa ngu DocFoo

more options

Hi- I recently updated to v7.0.1 and am having high CPU issues. I attempted the following fix but had no luck:

1) In the address bar, type about:config 2) If it shows up, click on I'll be careful 3) Filter for network.http.max-connections. 4) Change this from 256 to 48. 5) Restart Firefox.

The CPU surge appears to be worst on my YAHOO home page. Constantly between 60-70%. As is FF is pretty much unusable for me.

Also, network.http.max-connections-oer-server is set @ 15. Not sure if that matters or not.

ty for your help.

Hi- I recently updated to v7.0.1 and am having high CPU issues. I attempted the following fix but had no luck: 1) In the address bar, type about:config 2) If it shows up, click on I'll be careful 3) Filter for network.http.max-connections. 4) Change this from 256 to 48. 5) Restart Firefox. The CPU surge appears to be worst on my YAHOO home page. Constantly between 60-70%. As is FF is pretty much unusable for me. Also, network.http.max-connections-oer-server is set @ 15. Not sure if that matters or not. ty for your help.

All Replies (8)

more options

This problem is appearing as both high CPU useage, failure to connect, slow response, etc. I have the same issue and seem to get any type of response. I tried all the logical/obvious things post the 7.0.1 update which may cause issues with firefox (reloaded it, running with plugins disabled, etc)

I can't believe Mozilla/firefox isn't all over this one.

more options

7.0.1 was suppose to make the CPU issue better not worse. I'm sorry I updated now. I hope we can get an answer.

Okulungisiwe ngu WrenP

more options

These recommendations in this thread solved my issues. https://support.mozilla.com/en-US/questions/882138

Okulungisiwe ngu Chris Ilias

more options

Thanks Rich- I already switched network.http.max-connections to 48. Didn't work. I wonder if I should try 30?

more options

All day and no response from a Mozilla person.

more options

This really is a shame for Firefox... Actually a good browser, but this Sh***********t took me weeks to locate, why the whole f*cking PC is hanging... Damn it !!! 1st i thought it's the bloody Flash-Plugin, which for years is a pain in the ass, too. (BTW: Damn you Adobe !!!!!!!!!!!!!!!)

So... I'll install ------------->Firefox 8 beta 3<-------------- and let you know whether my PC explodes or Adobe just wants to install 2 TerraByte for their sh*tty Adobe Reader...  ;)

more options

They don't appear to care Doc.

more options

Oky doh Guys. Until now the pretty fresh Firefox 8.0 beta 3 seems to be better !!! It takes the same CPU-usage when watching a video on youtube as the latest Opera Browser(both use the same Adobe Flash...) So it seems they put the Spliffs away and got into some de-bugging ;) (no offense open-source-guys... actually fireFox is my fav. browser)

CPU-usage still too high to me, but maybe that's the crappy Adobe Flash Player...

http://www.mixcloud.com/1_Flashy_1/