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On Fri, 2020-06-05 at 08:54 +0200, Kevin Kofler wrote:
Ben Cotton wrote:
> Swap is useful, except when it's slow. zram is a RAM drive that
> compression. Create a swap-on-zram during start-up. And no longer
> swap partitions by default.
> == Owner ==
> * Name: [[User:chrismurphy| Chris Murphy]]
> * Email: chrismurphy(a)fedoraproject.org
I do not think it is safe to assume that zram is sufficient to
replace disk swap. We do not know how much RAM is actually available
users' machines, and the compressibility of RAM contents depends on
individual user's workloads.
The change says it will use 50% of user’s RAM size, but not more than
4G. I did not have chance to test how compression ratio depends on
workloads, but I believew that it will be far more better than 1:1.
Probably there should be some presets in Anaconda with "profiles" that
may default to different swap / zram configurations. But I think as
long as typical use-cases of users are covered (that's how I understand
these settings were chosen), it seems to be better than status quo.
So, I am opposed to this change as is.
> # Install systemd rust-zram-generator† package. This does not
> swap-on-zram, it only makes the generator available.
Also -1 to adding something to the core system that is written in a
for which we do not even have dynamic linking support. Or even real
linking support, as opposed to packaging libraries as source code.
This is not fair. It is a programming language that is safer than C and
is already used by some projects that we ship. rpm-ostree, firefox,
librsvg2 and others.
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