DNF: why does it refresh metadata all the time

poma pomidorabelisima at gmail.com
Fri Jun 20 21:27:19 UTC 2014

On 20.06.2014 17:55, Dan Williams wrote:
> On Fri, 2014-06-20 at 08:55 +0200, drago01 wrote:
>> On Thu, Jun 19, 2014 at 8:59 PM, Jared K. Smith
>> <jsmith at fedoraproject.org> wrote:
>>> On Thu, Jun 19, 2014 at 2:01 PM, Reindl Harald <h.reindl at thelounge.net>
>>> wrote:
>>>> if *that* is what is supposed to make DNF faster it's just a lie
>>> This is not the only thing that DNF does differently to try to make package
>>> installations and updates go faster (or appear to go faster).  Calling the
>>> developers liers doesn't help the situation any.
>>>> if i am really interested in updates now i do "yum clean metadata && yum
>>>> upgrade"
>>>> for many years simply because you don't know how accurat you metadata are
>>> Sure, but you have to understand -- you're a power user.  You know enough to
>>> do this in yum for your particular use case, which means you probably know
>>> enough to change the DNF settings with regards to cron-based metadata
>>> retrieval.  What I think you're missing (and frankly, seem to miss in the
>>> lot of fedora-devel discussions you take part in) is that Fedora isn't
>>> engineered around *your* particular needs.  We do things mostly by
>>> consensus, and aim to make it a pleasant experience for the *average* user
>>> (or whatever we have in the Fedora community that approximates an average
>>> user), and not just for power users with very specific needs and
>>> requirements.
>>> Whether you like it or not, one of the most common complaints about yum
>>> (especially from people coming from another package management system) is
>>> that it seems slow because of the necessity to download the metadata.  The
>>> DNF developers -- in trying to address this common complaint -- had solved
>>> it by handling metadata in a different way.  They've also added settings so
>>> that power users like you and I can tune it to better fit our particular
>>> needs.
>>>> and *no* traffic is not cheap everywhere, by far not
>>> I probably understand this better than a lot of people on this list, as I've
>>> been on a bandwidth-limited connection for the past nine years.  Only in the
>>> past month have I been able to get high speed internet in my home that
>>> wasn't limited to a few gigabytes per month.  So yes, I completely
>>> understand that traffic isn't cheap (or fast) everywhere.
>> It should be at least smart enough to not do it on mobile broadband
>> (like packagekit does).
> Python + D-Bus example for detecting WWAN NetworkManager 0.9+ is here:
> http://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/dbus/is-wwan-default.py
> Dan

This is super duper, however if wwan is on the router as Ranhald wrote, you can only click your heels three times and repeat, "There's no place like home."


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