Pretty soon I WILL start having problems and should clean it up now. If you think about that for a second, it's almost a half a gigabyte in size. From here, you can see the size of your profile.Īs you can see my User Profile is 489MB.
You can disable all add-ons by starting Firefox in safe-mode from the terminal, firefox -safe-mode, to see if you have the same thing happen. It might be Firefox, but often it's an add-on or combination of add-ons causing the leak. Your system will likely become sluggish from the other programs demanding unavailable memory.
If Firefox is still showing massive memory usage, then it's a leak. If you have another browser installed, like Chrome, start loading massive pages in it. Then start loading other memory intensive programs. You can check this by closing all your tabs except say a blank one. If it's a memory leak on the other hand, that would be a big problem. As long as the program is good about letting go of memory it doesn't absolutely require to other programs, it's not a problem. By keeping as much as you can in memory, it saves having to go to disk and also reloading content needlessly. It's like keeping a warehouse mostly empty because you think it's cleaner. There's a common misconception that utilizing a lot of memory is bad. Without specifying what you're doing exactly, it's hard to say this is an actual problem.