Re: Change proposal discussion - Optimize SquashFS Size

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On Mon, Feb 03, 2020 at 05:22:55PM +0100, Nicolas Mailhot via devel wrote:
> Le 2020-02-03 17:11, David Cantrell a écrit :
> 
> Hi,
> 
> >We want input from the community on what the main goal should be and
> >prioritize the rest.  For example, is ISO reduction size more
> >important than
> >improving installation time, for instance?  If so, why?
> 
> This is a nonsensical question

Great start for constructive discussion ;(

> without defining the target hardware and connectivity.

> Hardware with weak CPU (chromebook) and high connectivity (fiber)
> will want as low compression as possible.
> 
> Hardware with low connectivity or low storage (chromebooks, vms)
> will want the highest possible compression; because I/O limits will
> wipe out any CPU win, and dnf/packagekit caches get expensive fast.
> 
> (chromebooks are problematic in all cases)

Right. We produce just one image that has to serve all of those cases,
i.e. the hardware we are targeting is "the average" of all Fedora
users. (Producing more than one image with different compression
settings was briefly discussed also, but it seems that the storage of
multiple images is too "costly" to justify this.)  That is why we talk
about prioritization of goals: we need to pick something that handles
all cases and the question is which characteristics matter most to
users.

Zbyszek
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