No more deltarpms by default

Gerald B. Cox gbcox at
Mon Oct 6 17:15:01 UTC 2014

Bandwidth may be growing faster, but it started way behind processing
power.  It hasn't caught up.  The current definition from the FCC for
broadband is 4Mb.  They are working to increase it, but that hasn't
happened.  Carriers are looking for ways to throttle traffic.  Your
assumption that everyone has great amounts of bandwidth available is
erroneous.  You've also got it backwards.  Deltarpm is the default.  If you
want to change it, you need to convince the Fedora community.

On Mon, Oct 6, 2014 at 10:01 AM, Florian Festi <ffesti at> wrote:

> On 10/06/2014 05:16 PM, Gerald B. Cox wrote:
> > The fact that some users have more bandwidth means exactly
> > what?  Most people also have faster processors and disks now.  It is
> > more efficient from a networking perspective to minimize unnecessary
> > traffic and use local processing.  That was behind the rationale when
> > delta was introduced and made the default.  It was valid then, and it is
> > valid now.
> This argument is not valid. While most parts of a computer got faster
> things are not growing at the same rate. So what might have made sense a
> few years ago might be completely useless now.
> One thing that makes deltarpm less useful nowadays are seek times in
> hard disks (although they are going away). They are still the same as in
> the nineties  while the number of files have been growing.
> At the same time network bandwidth has been growing at a faster rate as
> everything else.
> So if you want to make an argument for deltarpm, please do so but do not
> try to convince us to buy into an outdated rational.
> Florian
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