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Bug#922227: apt-file: please dont ship config file with 'PDiffs "true";' set



On Wed, Feb 13, 2019 at 03:12:35PM +0000, Holger Levsen wrote:
> On Wed, Feb 13, 2019 at 04:07:10PM +0100, Julian Andres Klode wrote:
> > We made the choice to do it like this, because, while disabling PDiffs can
> > have some advantages for a small set of users on Packages and Sources files,
> > the advantages for Contents files affect an even much smaller set of users.
>  
> I dont know anyone who likes those pdiffs files...

I benchmarked this again, on a 400 Mbit/s connection, with all of February updates
on cdn-aws.deb.debian.org. Both pdiff and no pdiff performed in 17s. While the no
pdiff download was basically instantenious, most of the time was spent verifying
and compressing the Contents file to lz4 afterwards.

w/  pdiff: Fetched 41,2 MB in 17s (2.369 kB/s)
w/o pdiff: Fetched 119 MB in 17s (6.832 kB/s)                                                                                                                                                 

Given that a 400 Mbit/s connection with 10ms latency and a Core i5-8250u is way beyond
anything most users have, the results should only get better for them.

-- 
debian developer - deb.li/jak | jak-linux.org - free software dev
ubuntu core developer                              i speak de, en

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