[Bug 986786] Re: [MASTER] larger packages should use lzma compression

[Jérôme]

Maybe you should use the "--extreme" option of the xz compression since
it allows to save additionnal size for the archives.

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https://bugs.launchpad.net/bugs/986786

Title:
  [MASTER] larger packages should use lzma compression

Status in “app-install-data-ubuntu” package in Ubuntu:
  Triaged

Bug description:
  Anyway, the software center requires a lot of memory.

  Up to 3% of archive size could be saved :
  --------------------------------------
  j at dt-X64:~/tmp$ 7z x /var/cache/apt/archives/app-install-data_0.12.04.4_all.deb 

  7-Zip [64] 9.20  Copyright (c) 1999-2010 Igor Pavlov  2010-11-18
  p7zip Version 9.20 (locale=fr_FR.UTF-8,Utf16=on,HugeFiles=on,1 CPU)

  Processing archive: /var/cache/apt/archives/app-install-
  data_0.12.04.4_all.deb

  Extracting  data.tar

  Everything is Ok

  Size:       11714560
  Compressed: 7176706
  j at dt-X64:~/tmp$ ls
  data.tar
  j at dt-X64:~/tmp$ gzip --best --stdout data.tar > data.tar.gz
  j at dt-X64:~/tmp$ bzip2 --best --stdout data.tar > data.tar.bz2
  j at dt-X64:~/tmp$ lzma --best --stdout data.tar > data.tar.lzma
  j at dt-X64:~/tmp$ xz -9e --stdout data.tar > data.tar.xz
  j at dt-X64:~/tmp$ ll -h
  total 38M
  drwxr-xr-x  2 j j 4,0K avril 21 09:31 ./
  drwxr-xr-x 23 j j 4,0K avril 21 09:27 ../
  -rw-rw-r--  1 j j  12M avril 17 13:03 data.tar
  -rw-rw-r--  1 j j 6,7M avril 21 09:30 data.tar.bz2
  -rw-rw-r--  1 j j 6,7M avril 21 09:30 data.tar.gz
  -rw-rw-r--  1 j j 6,6M avril 21 09:30 data.tar.lzma
  -rw-rw-r--  1 j j 6,5M avril 21 09:31 data.tar.xz
  j at dt-X64:~/tmp$
  --------------------------------------

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: app-install-data 0.12.04.4
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: amd64
  Date: Sun Apr 22 10:13:43 2012
  Dependencies:
   
  InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  PackageArchitecture: all
  SourcePackage: app-install-data-ubuntu
  UpgradeStatus: No upgrade log present (probably fresh install)

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