Why are Chrome/Firefox so insane at disk writes?

This might be the wrong category but I don’t see another category. I also might vent frustration a bit. Apologies in advance.

So I happen to have a issue where Firefox and Chrome are writing insane amounts to my boot disk, like an abnormal amount, as in over 20 gigabytes a day it seems in the case of Firefox (most used)

Anyone have any ideas as to why? I’m on Fedora with the repo Firefox assuming it’s a OS issue? I’m literally out of ideas.

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I have no idea what’s “normal” but browsers generally cache everything so if the web pages you visit in a day amount to 20 gigabytes then I’d expect about that much to end up being written to disk.

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At least in firefox, you can disable it via about:config. Look for or create ‘browser.cache.disk.enable’ and set it to false.

Not sure about chromium, though.

I’ve changed it to false already, I’m going to take a look at it later this week after some use.

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Check arch wiki article for putting Firefox profile/cache in RAM (and using sync daemon for keeping it persistent).