this post was submitted on 15 Aug 2026
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What is zram?
Swap but better it behave mostly like actual ram and fast too, not as fast as actual ram but still way faster than swap I can open 5 browser tabs one of them playing a video while compiling a software I don't feel my system slow down at all
I always confuse ZRAM and ZSwap. From my understanding ZRAM is the better one and Zswap is kinda outmoded.
It turns into a rabbit hole every time I gotta reference it! Lol
From my understanding, it's the opposite. Zswap is the better one since it has a ZRAM-like compressed section of RAM and disk-backed swap. That's definitely an oversimplification though.
I agree it's confusing. I always look it up during setup so I know which one to use.
It's a Linux feature to compress some of your memory and then store it in a RAM disk. For systems with limited memory, it makes it go further.
https://en.wikipedia.org/wiki/Zram
I have a mini PC that has been barreling through NVMe disks but Alpine Linux’ “usb” install mode just wasn’t great either. So I use a “sys” (traditional install) on an NVMe disk but have directories like
/var/log,/tmp, etc. on Zstandard compressed zram disks. It’s been pretty fantastic honestly.