On Dec 14, 2014 10:12 PM, "Kevin Kofler" <kevin.kofler@xxxxxxxxx> wrote:
>
> Sudhir Khanger wrote:
> > Most decision are being made on two assumptions 1. people have fast and
> > unlimited internet connections and 2. people have high RAM and multiple
> > core CPU powerful computers. Both of these assumptions are arbitrarily at
> > best. DNF regularly downloads cache, disables delta RPM support,
>
> It's actually ENABLING DeltaRPM support (as the latest DNF update now does)
> that makes assumption 2. DeltaRPMs reduce download bandwidth consumption at
> the expense of a lot of CPU power. It's a tradeoff between 1. and 2. If you
> have 1. more than 2. (as is the case for me), then DeltaRPMs actually make
> your updates slower. If you have 2. more than 1., they make your updates
> faster.
I don't know why the time to rebuild rpms is important, updates are now applied at boot time, so rpms can be rebuilt with smaller nice/ionice before the user reboots (on Workstation product). Meanwhile bandwidth cost money.
>
> Kevin Kofler
>
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