Firefox restrict RAM usage

To restrict the amount of RAM that Firefox will use, try the following instructions:

  1. Go to the special configuration page in Firefox (write “about:config” without quotation marks in the address bar)
  2. Find the key (that is: most left column) named “browser.cache.memory.capacity” and double click that row . If it doesn’t exist, right-click anywhere on the table and select new->integer (swedish: ny->heltal) and input that name .
  3. Type in a value, try 15000. This may be a little low for machines with more than 1GB of RAM though (also, it may be too high if you have lesser than 1GB of RAM).
  4. You may need to restart your browser (which is Firefox!) for the changes to take effect.

This will limit the amount of RAM that Firefox uses for caching pages (it may use RAM for other parts of the program though).