[arch-dev-public] [PATCH] Support xz compressed packages

Pierre Schmitz pierre at archlinux.de
Tue Feb 16 05:21:16 EST 2010

Am Dienstag, 16. Februar 2010 08:51:50 schrieb Jan de Groot:
> What's the compression rate used in your test? I've seen benchmarks for
> an older version of xz-utils (I think it was called lzma-utils). In that
> benchmark the most simple compression level was faster and smaller than
> gzip -9, and bzip2 was outperformed anyways.

I just used the default which should be -6.

> Note that tighter compressions needs a bigger dictionary size when
> unpacking, which can be crap on low-memory systems.

Do you have numbers? We could do some testing in qemu with e.g. 128MB RAM 
etc.. Or maybe have a look at Slackware who are already using xz for their 
whole repo. According to them you need at least a 486 and 64MB RAM. Does not 
look like anything we should worry about.


Pierre Schmitz, https://users.archlinux.de/~pierre

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