Just under 200 MB free RAM?

installation
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I know, I know — this is more like basics of *nix, but because VPS has only Discourse and amount on RAM dictates if everything goes smoothly that’s the reason for such newu-class question.

8 GB RAM, no swap. Why free -m tells I have only 160 - 180 MB (it lives) free memory?

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Is this just another example of unused RAM is the most expensive part of memory and if there is demand to get more it will taken from cache?

Why I’m asking? I see way too often tips to use swap, and now I’m not sure if I need it. Do I have memory related issus? No, AFAIK and rebuilding takes its time, but it never dies

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That’s a classic case of https://www.linuxatemyram.com/

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So, as I suspected.

That was actually really nice page. Thanks.

And I would guess there is no need to swapon (if I would have mounted a swap…)

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I think swap is still useful. See for example

and

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