> 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.
You mentioned
/etc/systemd/zram-generator.conf
I do not have this file.
I have
/usr/lib/systemd/zram-generator.conf
>
> > 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.
OK, but free + used != total
Where is the difference ?
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