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do you run a lot of electron/chromium stuff? it intentionally wastes a lot of ram in order to lay things out so its hard to JIT spray

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I switched to Firefox as my main browser, which helped a bit. I think the only Chromium-based apps I have open by default these days are Spotify and Discord.

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But, like, why does Thunderbird of all things like to eat RAM? And Pulseaudio? And Plasmashell? I don't get it. It's random stuff like this. I'm at 22/32G used right now, and I swear half of it is dumb stuff.

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pulseaudio is only using ~10MiB on my linux machine o.O

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what does /proc/8766/maps look like?

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Though honestly I have very little incentive to debug pulseaudio right now, seeing as I'll be switching to PipeWire as soon as I can make snd-dice.ko not suck.

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yeah i honestly don't see any smoking gun in that output, but, still, strange. don't understand why your pulseaudio is using 2.6GiB of RAM while mine is using 10MiB :/

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I wonder if all along I've had some kind of stupid kernel config option set that makes everything terrible?

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dunno. thunderbird made some amount of sense, all of the RSS data is probably cached stuff, sqlite databases, etc

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The in-memory caching in Firefox/Chromium is also quite heavyweight on desktop Linux compared to other platforms. On Windows, they release caches with MEM_RESET and then use MEM_RESET_UNDO to get them back when they want to use them. If there was memory pressure, it's gone.

4:49 AM · Jun 26, 2021Twitter Web App

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On Android, ashmem has unpin/pin to do the same thing. MADV_FREE isn't usable since you don't have a way to undo it and check if everything was preserved. You can look at the platform abstraction code and it's just stubbed out for non-Android Linux so it holds onto more memory.

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I wonder if it makes sense to bring ashmem to mainline?

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