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How can I quickly "unclog" firefox when it runs out of memory (with 1000/2000 tabs)

Hi, Once in a while I try to clean up my tabs. First thing I do is use "merge all windows" to put all tabs into one window.

This often causes a memory clog and firefox get stuck in this state for 10-20 minutes

I have recorded one such instance.

I have tried using the "discard all tabs" addon, unfortunately, it is also getting frozen by the memory clog.

Sometimes I will just reboot my PC as that is faster.

Unfortunately, killing firefox this way, does not save the new tab order, so when I start firefox again, it will have 20+ windows open, which I again, merge all pages and then it clogs again !

So far the only solution I have found is just wait the 20 minutes.

Once the "memory clog" is passed, it runs just fine.

I would like better control over tab discard. and maybe some way of limitting bloat. For instance, I would rather keep a lower number of undiscarded youtube that as they seem to be insanely bloated.

In other cases, for most website I would like to never discard the contents.

In my ideal world, I would like the tabs to get frozen and saved to disk permanently, rather than assuming discard tabs can be reloaded. As if the websites were going to exist forever and discarding a tab is like cleaning a cache.

155 comments
  • I've read this entire thread like three times and watched all the videos you've posted, and I still don't understand your workflow at all.

    If searching bookmarks/history is harder than using Google to just find the thing you want to get back to, why do you need to keep the things you want to get back to open rather than just using Google to find the page again later? Or when you want to get back to something you (think you?) have left open, do you find it just by scrolling through all your tabs until a title/favicon looks like what you're looking for?

    Your last paragraph makes it seem like maybe you want to keep the tabs open so if the page/content gets deleted off of the server, you don't lose it. Is that correct? I'd imagine that doesn't always accomplish that, though, right? (Particularly for something like YouTube.) If that's a significant part of why you keep the tabs open, though, maybe that bit at least is a good question for a data hoarder community.

    I haven't been able to find any "discard all tabs" addon for Firefox by Googling. And I can't guess what exactly it does. (Does it save tab states to disk and suspend - but also leave open - all tabs or something?) Are you sure that's the name of the addon you're using?

    • why do you need to keep the things you want to get back to open rather than just using Google to find the page again later?

      If it's already in memory, that's one few step to reach it.

      My tab manager can't search google

      do you find it just by scrolling through all your tabs until a title/favicon looks like what you’re looking for?

      I search my live memory with Tab Manager Plus

      Sadly, it can't search tab body text, only tab titles.

      if the page/content gets deleted off of the server, you don’t lose it. Is that correct?

      My software should not discard data without my permission. When it runs out of RAM it should dump to disk cache, not delete. But browser have the builtin assumption that the web remembers everything, which is false. I also think bookmarks should save all tab data, all text, all images, all code, all video, and the code should remain as functional as possible. That's a long way off, currently the only way to do that is freeze the tab with its browser and operating system inside a virtual machine live snapshot.

      I haven’t been able to find any “discard all tabs

      I believe this one can do, discard selected tabs, but not discard all tabs

      https://addons.mozilla.org/en-GB/firefox/addon/discard/

      Discard is the action where all tab content is deleted, keeping only URL, title and favicon

      I haven't found discard all tabs either.

      I would like "stop all tabs" to work

      https://addons.mozilla.org/en-US/firefox/addon/stop-all-button/

      But it will only work after firefox has cleared the clog, it currently freezes with the rest of the browser.

      • If it's already in memory, that's one few step to reach it.

        I search my live memory with Tab Manager Plud

        Oh, so you're doing something like Googling just to find the page title and then rather than clicking the link in Google, (closing the Google results page, I hope and) searching through your tab titles with Tab Manager Plus to find and switch to the open tab where you already have the page in question open?

        Though, I still don't understand why you keep the tab open in the first place rather than juat closing the tab when you're (at least for the moment) done with it and then Googling to find the content again and clicking the appropriate link to get that same content in a new tab when you do need it again. I asked whether the reason was so that if the content is removed from the server, you didn't lose it, but I don't think anything you said in your last post answered that question. You did say:

        My software should not discard data without my permission. When it runs out of RAM it should dump to disk cache, not delete.

        Which wasn't quite a direct answer to my question. And you then directly admit that the browser doesn't even keep content that's open in a tab:

        But browser have the builtin assumption that the web remembers everything, which is false.

        So that must not be why you keep content open in tabs, right?

        Is it maybe something like if you keep something open in a tab, the presence of that page title in your tab manager gives you confirmation when you later Google to find the page title that such-and-such particular result in the Google results is indeed the thing you're looking for and not a different page than the one you were looking for?

        Just as an aside, my web browser use is probably atypical as well. I have my browser forget all cookies, history, cache, etc (basically everything but my bookmarks) every time I fully close it. And I close it every time I switch activities to keep my online personas isolated from each other. (So I'm never logged into my Google account and my Amazon account at the same time, for instance. To reduce targeted ads and such.)

        Also, I'm wondering if something more like a caching proxy with maybe page searching capabilities and finegrained control of what is cached and what isn't might fill part of your use case, but I still don't have a firm grasp on your use case.

  • A tab suspender extension might help some, but there's only so much you can do to minimize the impact of thousand(s) of tabs. Cleaning out old tabs more frequently is probably a better habit.

  • From a practical standpoint, it's hard to imagine what you could possibly be doing where it's beneficial to have a thousand tabs open.

    If I'm writing a research paper, I might want 5 or 10 tabs open at a given time. Let's say I'm a little chaotic so I get up to 20. And then limitations on my working memory kick in, and having any more open tabs actually makes me worse off.

    But then let's suppose it's a thesis that's 50 pages long. So I might be relying on 40 or 50 references. I'm not relying on them all at the same time, right? So I definitely don't want to keep those tabs open all at the same time.

    What I could do, and what you could consider, is either bookmarking things or using archive.org to make a backup of the pages.

    In one of the other comments you mentioned Facebook. That has me a little concerned again with your objectives. If it's something private on Facebook that can't be recovered later, and you need something reliable, then you have no choice but to do long screenshots or scrolling videos. If it's not reliable, then why do you care so much to keep the window open? Just close the window, remember whatever you remember, and move on with your life.

    Whatever you do, here's a few rules of thumb... Your web browser is not an archiving tool. Printing to PDF is one way to archive things. There are other ways to archive things too. You don't actually need to archive as much as you might think you need to archive. Most of the things that we think might be important now actually won't be useful at all three months from now. Rarely would one actually want to have a thousand sources of information for any given task.

  • Why do you need so many open tabs to begin with? What is your usecase?

  • Sidebery (FOSS, MIT license) has several features that could be used to help you merge thousands of tabs into one window without choking out your memory usage, and generally makes it really easy to organize a massive amount of tabs. It would take several steps. First, you'd right-click the panel (the top-level organizational unit in Sidebery, above the tabs) on each window and select Save to bookmarks (example folder structure: selecting Bookmarks Toolbar/merge/ for a panel named panel1 would save the tabs under Bookmarks Toolbar/merge/panel1; click a folder twice in the selection dialog to expand it). Then you'd close that window and repeat with each window, being careful with the panel names so as not to overwrite any other window's tabs. Once you're down to one window, create an empty panel, right-click it, and select Restore from bookmarks. From this dialog, selecting the top-level folder that all the other bookmarked panels reside in (Bookmarks Toolbar/merge/ in this example) will import every tab from every window that was bookmarked, grouped by the window name.

    When Sidebery imports a panel from bookmarks, the tabs are imported in an unloaded state, so they have basically no effect on memory until you actually click into them and load them. I can restore about 50 tabs per second from bookmarks without my system even slowing down, taking me from 0 to 500 tabs in about 10 seconds. It's not exactly a one-click option, but I wager it will be significantly faster and less prone to completely breaking than your current workflow, and a little easier to back up (even if window/session states get wonky, bookmarks sync pretty much instantly).

    Once your tabs are all in the same window, you can load tabs you want loaded by selecting a bunch (ctrl-click, shift-click, etc., just like in file explorer) and refreshing them, presumably avoiding YouTube tabs (should probably download those with YT-DLP anyway if you want to keep them). Sidebery will actually limit how many tabs it reloads at once, so it'll never choke out your system by trying to instantly load a thousand of them (unlike if you select "open all in tabs" in Firefox's native bookmarks context menu... eurgh). Even if it isn't faster (though I suspect it is) the browser is at least usable while that's going on. I'm not sure how well this method preserves containers, mainly because I don't use them, so if you do, keep an eye on that if you test it out. All I know for sure is Sidebery supports reopening a tab in a new/different container because that's in the default context menu.

    There's more time savings than just window merging and tab loading, there's the tree-style viewing, being able to collapse whole trees of tabs you aren't actively paying attention to, seeing the full titles of 30-40 tabs at a time, no more sideways scrolling, a built in search bar to filter shown tabs by title, fully customizable keyboard shortcuts and context menus... it's actually incredible how much this addon can do, and not only does it have a lot of settings and customization that should let you tailor its behavior to exactly how you want it, you can even sync its actual settings through Firefox! (just make sure to set your device name) Only thing it can't do is remove the tab strip to give you more vertical real estate, but Mozilla might be working on that.

    I know what it's like to be attached to a cumbersome workflow. I hope this can help streamline things for you a bit and make life with ~2,000 tabs just a little less troublesome.

155 comments