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List:       fedora-devel-list
Subject:    Re: Proposal: drop delta rpms (for real this time)
From:       "Daniel Alley" <dalley () redhat ! com>
Date:       2023-02-28 2:47:03
Message-ID: 20230228024703.18998.93799 () mailman01 ! iad2 ! fedoraproject ! org
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I am not sure whether by "all historical updates" you are only referring to all \
updates being listed in updateinfo.xml, or all history generally (including old \
packages).  But in the latter case, note that keeping all updates massively inflates \
the storage requirements for maintaining a copy of the repo, which many (or even \
most) corporate users do.  This is not a huge problem, generally, but it's also not \
ideal, and probably isn't the right tradeoff for Fedora.

Here[0] for example is RHEL 8 baseos and appstream, for which the difference between \
storing "only the latest package" and "all the packages listed" is 20x and 10x, \
respectively.  Metadata size would likewise be larger, meaning DNF clients have more \
to download.

[0]

[dalley@thinkpad repos]$ rpmrepo details el8-baseos
...
Number of packages:                          12910   
Number of unique packages (latest version):  1798    
Number of packages (latest 3 versions):      4459    
Packages total size:                         23.82 GB
Packages total size (latest version):        1.4 GB  
Packages total size (latest 3 versions):     4.03 GB 

[dalley@thinkpad repos]$ rpmrepo details el8-appstream
...
Number of packages:                          29103   
Number of unique packages (latest version):  5902    
Number of packages (latest 3 versions):      12988   
Packages total size:                         92.91 GB
Packages total size (latest version):        9.12 GB 
Packages total size (latest 3 versions):     23.91 GB
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