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Mozilla Still Perplexed as to Why Firefox Takes So Much RAM

A lot of it has to do with the way it caches pages. If you type about:config in the address bar and hit enter, then do a search for cache, you can fine tune the amount of memory it uses. You can even completely disable it's caching to ram, but that slows down revisiting pages quite a bit. While not the best, mine never goes over 90MB, and I have 18 extensions running.
 
as someone else pointed out, it has more to do with where the memory goes after you close tabs. normally i will have 5 or 6 tabs open. when i close 4 of them out FF still uses the same amount of memory. very strange.
 
Mine does that too. Using 120mb with 2 tabs open.
 
Easy Rhino said:
as someone else pointed out, it has more to do with where the memory goes after you close tabs. normally i will have 5 or 6 tabs open. when i close 4 of them out FF still uses the same amount of memory. very strange.
Click to expand...
Right, that's why I said "a lot of the reason", not the whole reason. If you limit the amount it caches, it doesn't build up near as much.
 
I have limited it to 10MB from when I started using FF (just like I did with IE), default is 50MB. Earlier in this thread i said it uses 205MB, well now it uses 225MB (226MB..227MB) tomorrow more.. (now 228MB) Something is really wrong with it :) (230MB and I honestly typed those mem usages while I wrote this..)
 
I am using 52mb right now that is with 3 tabs open and all add-ons disabled.
 
55 MB | 3 tabs | 11 add-ons enabled.
 
Now 8 tabs open, 1.026GB of ram used for firefox, record ram usage is around 1.7GB for firefox on my system, it's on 24/7 mind you.
 
insider said:
Now 8 tabs open, 1.026GB of ram used for firefox, record ram usage is around 1.7GB for firefox on my system, it's on 24/7 mind you.
Click to expand...
It has to be a problem with an extension or a setting. That's not even close to normal FF behavior, even with the memory leak.
 
Addons: 3, Real player plugin, talkback, Java runtime environment.

Disk cache is disabled on the browser.

RSS feeds: 19
 
insider said:
Addons: 3, Real player plugin, talkback, Java runtime environment.

Disk cache is disabled on the browser.

RSS feeds: 19
Click to expand...
Diskcache won't effect ram usage. browser.cache.memory.* is what you are looking for.
 
This is what I have:

Code: 
                                                            Status     Type               Value
browser.cache.memory.enable        true         boolean           true
 
insider said:
This is what I have:

Code: 
Status     Type               Value
browser.cache.memory.enable        true         boolean           true
Click to expand...

Here's mine.
FFcache689.png
 
add it
 
insider said:
Version 2.0.0.9
Click to expand...
It should be in there then. Right click in the about:config window somewhere, and select new-->Integer

Should walk you thru the step needed to make it.
 
insider said:
Wouldn't create integer when I select it only a string value.
Click to expand...

That's weird. It works on mine. I created browser.cache.memory.capacity2 and it worked.

Did you put the dots in the name? You have to do that. And after you enter the name, it should let you input a value in another pop-up box. (The value for that setting is in KB, 1024=1MB)
 
insider said:
Current FF ram usage 209MB after under 20 mins and increasing...
Click to expand...
Are you still set for 256MB cache? If so, it should get to around 350MB. If it goes higher, you have an add-on problem for sure. Next step is to try to disable your add-ons, one by one, to find the culprit.
 
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