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

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On Fri, 2020-06-05 at 12:58 -0700, John M. Harris Jr wrote:
> On Friday, June 5, 2020 12:39:05 PM MST Igor Raits wrote:
> > On Fri, 2020-06-05 at 12:19 -0700, John M. Harris Jr wrote:
> > 
> > > On Friday, June 5, 2020 12:16:36 PM MST Chris Murphy wrote:
> > > 
> > > > On Fri, Jun 5, 2020 at 1:10 PM John M. Harris Jr <
> > > > johnmh@xxxxxxxxxxxxx>
> > > > wrote:
> > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > On Friday, June 5, 2020 12:03:03 PM MST Chris Murphy wrote:
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > > > In discussions with both cloud and server folks, their use
> > > > > > cases often
> > > > > > do not even create disk-based swap at all. A small swap-on-
> > > > > > zram
> > > > > > provides all the benefits of inactive anonymous page
> > > > > > eviction,
> > > > > > including reducing reclaim of file pages, without the black
> > > > > > hole
> > > > > > performance problems of swap-on-drive.
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > So yes it's well suited for these cases and the proposal
> > > > > > does
> > > > > > include
> > > > > > them. If they wish to be left out, that's up to those
> > > > > > working
> > > > > > groups.
> > > > > > It's possible to make sure /etc/systemd/zram-generator is
> > > > > > not
> > > > > > present.
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > That doesn't seem to reflect reality. If you download the
> > > > > Server
> > > > > image
> > > > > right now, and go with its automatic partitioning scheme
> > > > > generation,
> > > > > it'll give you a swap partition on LVM. This is correct for
> > > > > most
> > > > > servers,
> > > > > not necessarily the LVM part, but having swap on disk.
> > > > 
> > > > 
> > > > 
> > > > 
> > > > The proposal recommends changing this. Cloud and Server folks
> > > > will
> > > > decide what's best for their use cases, not me.
> > > 
> > > 
> > > 
> > > In that case, would you be open to changing this proposal to only
> > > affect
> > > Workstation?
> > 
> > 
> > I think it is fine to have the proposal as it is. Those groups will
> > chime in if they do not like this approach. Having things
> > consistent
> > across editions (in this regard) makes more sense to me tbh.
> 
> What makes sense for desktops doesn't necessarily make sense for
> servers, or 
> other environments. Fedora isn't just a desktop distro. Additionally,
> what 
> GNOME folks believe to be best is normally not the best for other
> desktop 
> environments.

Can you be more specific about potential problems you see in other use-
cases like server?

> -- 
> John M. Harris, Jr.
> 
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- -- 
Igor Raits <ignatenkobrain@xxxxxxxxxxxxxxxxx>
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