Mailinglist Archive: opensuse-factory (381 mails)

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Re: [opensuse-factory] A look on RPM compression in openSUSE
On 11/10/2018 01.20, Stefan Brüns wrote:
I think this could even be incorporated in RPM itself, feed it the file list,
order by filename suffix.

Nice trick. Reminds me of
https://7-zip.org/faq.html

Why 7z archives created by new version of 7-Zip can be larger than archives
created by old version of 7-Zip?

Old version of 7-Zip (before version 15.06) used file sorting "by type" ("by
extension").



I also did that once in a university study, where re-ordering the
contents of a binary struct to have values of the same kind next to each
other,
gave large gains in compression ratio.

So instead of
a1 b1 c1 a2 b2 c2 a3 b3 c3 a4 b4 c4
it became
a1 a2 a3 a4 b1 b2 b3 b4 c1 c2 c3 c4
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