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Re: xz for the new release tip


On 10/01/2009 08:27 AM, Ralf Corsepius wrote:
On 10/01/2009 08:19 AM, Mark Kettenis wrote:
Date: Wed, 30 Sep 2009 22:28:57 +0200
From: Jan Kratochvil<jan.kratochvil@redhat.com>

Hi,

while currently the sources are release both as .tar.gz and as
.tar.bz2 would
not it be worth to start using .xz as a replacement for the .bz2
variant?

13406892 bytes: gdb-6.8.91.20090930.tar.xz (xz -9)
xz -dc: real 0m1.226s user 0m1.190s sys 0m0.037s

18453837 bytes: gdb-6.8.91.20090930.tar.bz2
bzip2 -dc: real 0m3.775s user 0m3.755s sys 0m0.019s

Never heard of it, so my guess it isn't used widely enough yet to make sense.

Well, zz is the successor of lzma.


It's supported as "dist compression" by modern autoconf's
(autoconf-2.64)

Correction: automake (automake-1.11)


, it's the internal compression being used in rpm on
modern Linux distros (Fedora, openSUSE), etc.

Whether it's stable enough and has a longer term perspective is a
different question or will prove to be a yet another temporary anecdote
in compression tools is hard to tell - doubts are justified, IMHO.

Ralf





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