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

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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.

-- 
John M. Harris, Jr.

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