On Fri, Dec 9, 2016 at 10:58 PM, Matthew Miller
<mat...@fedoraproject.org> wrote:
> On Fri, Dec 09, 2016 at 10:22:44PM +0000, Peter Robinson wrote:
>> repo data). The full list makes up most of the 40Mb downloaded. The
>> dnf developers seem to think that everyone has lots of data/bandwidth
>> and don't see the problem with it.
>
> Isn't the problem that the SAT solver used by DNF for dependency
> resolution doesn't know in advance if it will be needed or not, and
> there isn't an easy way of adding it in midway?

No idea of the exact details, by default yum didn't use all that data
so didn't download it (it's basically a full file list of everything
in all rpms) until it actually did need it which was never for
standard use cases. dnf downloads it all the time, this IMO is a
regression which can cost non insignificant amounts of bandwidth (eg
my parents have a 5Gb allocation a month, 40Mb a day * 30 days a month
is 1.2Gb or over 20% of their allocation).

Peter
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