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

High memory usage when many tabs are open (and closed)

  • 3 svar
  • 10 har dette problemet
  • 1 view
  • Siste svar av blatan

more options

When I open Firefox the memory usage is about 70-100 MB RAM. When I'm working with Firefox I often open 15-20 tabs at once, then I close them and open others. Memory usage increaes up to 450 - 500 MB RAM. After closing the tabs the usage usually decreases, but after sometime. It starts decreasing very slow and never comes back to the level from the beginning. After few hours of work Firefox uses about 400 MB RAM even if one tab is open. First I thought it's because of my plugins (Firebug, Speed Dial, Adlock Plus) but I've checked it and it's not. I reinstalled Firefox but the problem occurs as well. I'm not sure if it's normal. Could you help me, please?

When I open Firefox the memory usage is about 70-100 MB RAM. When I'm working with Firefox I often open 15-20 tabs at once, then I close them and open others. Memory usage increaes up to 450 - 500 MB RAM. After closing the tabs the usage usually decreases, but after sometime. It starts decreasing very slow and never comes back to the level from the beginning. After few hours of work Firefox uses about 400 MB RAM even if one tab is open. First I thought it's because of my plugins (Firebug, Speed Dial, Adlock Plus) but I've checked it and it's not. I reinstalled Firefox but the problem occurs as well. I'm not sure if it's normal. Could you help me, please?

Valgt løsning

Hi,

Not an exact answer but please see this. The KB article ponders through various general situations which may or may not be applicable to specific instances but nevertheless could be helpful.

...............................................................................................................................

Useful links:

All about Tools > Options

Going beyond Tools > Options - about:config

about:config Entries

What's That Preference? add-on - Quickly decode about:config entries - After installation, go inside about:config, right-click any preference, enable (tick) MozillaZine Results to Panel and again right-click a pref and choose MozillaZine Reference to begin with.

Keyboard Shortcuts

Firefox Profile Folder & Files

Safe Mode

Problematic Extensions/Add-ons

Troubleshooting Extensions and Themes

Les dette svaret i sammenhengen 👍 1

All Replies (3)

more options

Could anybody help me? Is it normal Firefox takes so much RAM?

more options

Valgt løsning

Hi,

Not an exact answer but please see this. The KB article ponders through various general situations which may or may not be applicable to specific instances but nevertheless could be helpful.

...............................................................................................................................

Useful links:

All about Tools > Options

Going beyond Tools > Options - about:config

about:config Entries

What's That Preference? add-on - Quickly decode about:config entries - After installation, go inside about:config, right-click any preference, enable (tick) MozillaZine Results to Panel and again right-click a pref and choose MozillaZine Reference to begin with.

Keyboard Shortcuts

Firefox Profile Folder & Files

Safe Mode

Problematic Extensions/Add-ons

Troubleshooting Extensions and Themes

Endret av Vivek

more options

Tahnk you for yor reply. I check memory usage in Google Chrome and it's very similar. I have 6 GB so maybe I shouldn't worry about it. On the other hand 500 MB per 1 application it's very much. Last time when I had such high memory usage in 1 program was during my studies. When I wrote programs using pointers in C++ by myself. :-)