Task manager for tabs in Firefox, or which of the thirty open pages eats resources?

Question

Mozilla Firefox

Since instead of programs there are now more and more pages in the browser, and it seems that some of the Javascript writers still have not learned how to write resource-saving code, the question arises - how to deal with resource eaters? The line in Task Manager like Firefox 90% 1,500,000K is not very informative.

Moreover, such a problem is typical not only for netbooks, but also for quite powerful desktops - as you know, shitty code can lay down any resources.

C flash is easier - it is almost never needed except for youtube - NoFlash solves the problem. But NoScript solves the problem poorly - almost everywhere Javascript is used not only to display porn banners, but also for useful things like form validation, Ajax, etc. And if scripts are turned off by default, then you will have to spend time turning the script back on this page, which will force it to reload with the loss of the form content.

A good solution would be to "clamp" the priority of scripts on all tabs except the current one, but something is not visible ready, correct me if I'm wrong. A partial solution would be an analogue of the task manager, but not for processes, but for tab pages, in order to know who eats a lot, but also not.

Close pages? Yes, but often what is really needed is open, consider that you have thirty sheets of paper on your table - everyone is needed.

Yes, the browser is Firefox, but you can expand the discussion if this issue is resolved in any other browser.
Chrome, as I understand it, also does not know how, although it does not fall all over because of one crooked page, and thanks for that.

Answer 1

Google Chrome has a "Task Manager" (it's located here "Customize and manage Google Chrome - Tools - Task Manager"). In this "Task Manager" you can see how much processor/memory each open tab eats + you can see how much processor/memory extensions eat up, including Flash.

Answer 2

Regarding Ognelis, as far as I understand, the page is not spinning in a separate process and therefore it is impossible to determine from which page the javascript, flash or crooked plugin caused the leak.
To control leaks, there are a couple of plugins, but they show everything in an unreadable format, understandable only to developers.
For example Leak Monitor

Answer 3

about:performance seems to fit the description

Answer 4

What about Opera? It infuriates me when it starts eating 25% (one core) of processor time. And as luck would have it, it often starts when you open a bunch of pages with search results and you need to study them all before closing.
I think this is often associated with flash (heavy banners, etc.). There would be a way to find out which tab is loading.
PS Opera 11.11

Answer 5

Personally, my mozilka is not buggy even when there are over 30 tabs, but it slows down from themes + sometimes when there is a lot of flash.