No more deltarpms by default

[drago01]

On Mon, Oct 6, 2014 at 3:48 PM, Gerd Hoffmann <kraxel at redhat.com> wrote:
>   Hi,
>
>> > It would be nice to see if we can find ways to improve the performance
>> > of the deltarpm reconstruction instead. Much of the time is spent on
>> > compression/decompression tasks which *should* be massively parallel
>>
>> s/massively parallel/not done at all/ ... but we had this discussion
>> each time this comes up. There is no point in compressing something
>> just to uncompress it a few minutes later.
>
> IIRC the problem is that the _compressed_ rpm is signed, so things go
> "compress -> check sig -> uncompress" and you can't cut the compress
> +uncompress without also cutting the signature check :(

Is the payload actually signed? The conclusion from the last
discussion was that only the header is signed (which in turn contains
the checksums of the files).