this post was submitted on 13 Sep 2026
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cross-posted from: https://lemmy.world/post/51845693

Credit to @ryanc@infosec.exchange

I just did the graphic

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[โ€“] kopasz7@sh.itjust.works 18 points 3 days ago* (last edited 3 days ago) (1 children)

To add some nuance to this, do not use ZRAM in combination with swap. There's ZSWAP for that which does what you would expect, without clogging up your RAM and gracefully handling a backing device. (ZRAM is just another block device for the kernel, so you will get LRU inversion if it fills up and you have another layer of swap on disk. Meaning your cold pages will be needlessly stuck in zram.)

Yeah, the same person who wrote the article I linked above also wrote one on zram vs zswap, which I think is also a good read: https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html