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How much swap? (lemmy.ca)

submitted 3 years ago by sam@lemmy.ca to c/selfhosted@lemmy.world

56 comments fedilink hide all child comments

I've heard a lot of people say your swap should be 2x RAM.. but do I really need 32GB of swap?

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[–] wgs@lemmy.sdf.org 22 points 3 years ago (2 children)

Don't even bother with a SWAP partition. Create an empty file on your / partition so you can grow/shrink it as needed.

did if=/dev/zero of=/SWAP bs=1024m count=4
mkswap /SWAP
swapon /SWAP

[–] float@feddit.de 5 points 3 years ago* (last edited 3 years ago)

This is the way! There's a catch with swap files on encrypted disks and hibernation but that's quite a special case. Edit: forgot to mention zswap, the compressed version of swap.

[–] mygreatlimbo@lemmy.world 5 points 3 years ago (1 children)

Not a golden rule. For example btrfs has limited support for swapfiles.

[–] wgs@lemmy.sdf.org 1 points 3 years ago

Of course there's no golden rule. But I've found this one to be pretty useful ! Didn't know about btrfs limitations though, thanks for the hint!