On 5/12/26 12:37 AM, Patrick Dupre via users wrote:
On 5/11/26 8:01 PM, Tim via users wrote:
Benny Lyne Amorsen wrote:
zswap on the other hand discovers that certain pages have not been in
use for a long time, and so it migrates them to disk without
decompressing them. It will also notice that some memory pages are
incompressible, and it will send those straight to disk.
The result is that with zswap, the recently used pages are in fast
compressed memory, and stuff which has not been used for hours is
on disk. As it should be.
https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html
Patrick O'Callaghan:
Fascinating article. I suggest people read the section on Fedora before
deciding to change.
So what's the current default setup for swapping with Fedora? (i.e.
Fresh install on a blank drive, you haven't customised anything.) I'm
still on Fedora 42 on the other PC.
zram with no swap partition.
My machine is still slow, typically jumping from winodw to wondow.
I have
NAME TYPE SIZE USED PRIO
/dev/zram0 partition 8G 7.8G 100
You still only have 8GB of swap. You didn't change the file I mentioned.
Something that I do not understand
top
Tasks: 513 total, 1 running, 507 sleeping, 4 stopped, 1 zombie
%Cpu(s): 4.1 us, 2.5 sy, 0.0 ni, 92.9 id, 0.0 wa, 0.3 hi, 0.2 si, 0.0 st
MiB Mem : 31955.0 total, 538.2 free, 27718.0 used, 7342.9 buff/cache
MiB Swap: 8192.0 total, 161.9 free, 8030.1 used. 4237.0 avail Mem
I do not understand the numbers, i.e. free + used + buff != total
"buff/cache" is part of "used" and likely also includes the zram space.
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