Re: Fedora 33 System-Wide Change proposal: swap on zram

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On Friday, June 5, 2020 3:20:30 AM MST Kamil Paral wrote:
> On Thu, Jun 4, 2020 at 10:32 PM Ben Cotton <bcotton@xxxxxxxxxx> wrote:
> > https://fedoraproject.org/wiki/Changes/SwapOnZRAM
> > 
> > == Summary ==
> > 
> > Swap is useful, except when it's slow. zram is a RAM drive that uses
> > compression. Create a swap-on-zram during start-up. And no longer use
> > swap partitions by default.
> 
> I haven't tested it personally on my system yet, but I've read the proposal
> carefully (it's very well described, thank you!) and it sounds like a good
> change, so thumbs up at the moment. This might offer much better system
> interactivity under heavy RAM workloads compared to alternative OSes which
> don't use RAM compression (e.g. Windows). I like that. If /dev/zram0 really
> dynamically scales up and down and occupies no real memory when swap is not
> used, I can't see any disadvantages there. The only thing is that it will
> prevent using hibernation by default, but that's a whole different topic
> that is dealt with separately and I understand it's sadly a very broken
> feature at the moment anyway.

At the moment, it seems that hibernation is only broken on systems with Secure 
Boot enabled, because of a kernel lockdown anti-feature.


-- 
John M. Harris, Jr.

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