openjdk team mailing list archive

[Jérôme <981516@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Anyway, Java requires a few memory for operation. Moreover you can tweak
the memory limit for lzma decompression.

Below are the data size saved into openjdk-6-jre-headless archive for different compressions method compared to gzip :
- bz2  : 15,0%
- lzma : 36,0%
- xz   : 36,3%

-----
j@dt-X64:~/tmp$ 7z x /var/cache/apt/archives/openjdk-6-jre-headless_6b24-1.11.1-4ubuntu2_amd64.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/openjdk-6-jre-
headless_6b24-1.11.1-4ubuntu2_amd64.deb

Extracting  data.tar

Everything is Ok

Size:       76554240
Compressed: 25281618
j@dt-X64:~/tmp$ gzip --best --stdout data.tar > data.tar.gz
j@dt-X64:~/tmp$ bzip2 --best --stdout data.tar > data.tar.bz2
j@dt-X64:~/tmp$ lzma --best --stdout data.tar > data.tar.lzma
j@dt-X64:~/tmp$ xz -9e --stdout data.tar > data.tar.xz
j@dt-X64:~/tmp$ ls -l
total 152200
-rw-rw-r-- 1 j j 76554240 avril 13 03:36 data.tar
-rw-rw-r-- 1 j j 21535313 avril 14 10:50 data.tar.bz2
-rw-rw-r-- 1 j j 25349980 avril 14 10:50 data.tar.gz
-rw-rw-r-- 1 j j 16216010 avril 14 10:53 data.tar.lzma
-rw-rw-r-- 1 j j 16146476 avril 14 12:34 data.tar.xz
j@dt-X64:~/tmp$
-----

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: openjdk-6-jre-headless 6b24-1.11.1-4ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu2
Architecture: amd64
Date: Sat Apr 14 13:13:38 2012
InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
SourcePackage: openjdk-6
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: openjdk-6 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

-- 
You received this bug notification because you are a member of OpenJDK,
which is subscribed to openjdk-6 in Ubuntu.
https://bugs.launchpad.net/bugs/981516

Title:
  deb archives should use lzma compression

Status in “openjdk-6” package in Ubuntu:
  New

Bug description:
  Anyway, Java requires a few memory for operation. Moreover you can
  tweak the memory limit for lzma decompression.

  Below are the data size saved into openjdk-6-jre-headless archive for different compressions method compared to gzip :
  - bz2  : 15,0%
  - lzma : 36,0%
  - xz   : 36,3%

  -----
  j@dt-X64:~/tmp$ 7z x /var/cache/apt/archives/openjdk-6-jre-headless_6b24-1.11.1-4ubuntu2_amd64.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/openjdk-6-jre-
  headless_6b24-1.11.1-4ubuntu2_amd64.deb

  Extracting  data.tar

  Everything is Ok

  Size:       76554240
  Compressed: 25281618
  j@dt-X64:~/tmp$ gzip --best --stdout data.tar > data.tar.gz
  j@dt-X64:~/tmp$ bzip2 --best --stdout data.tar > data.tar.bz2
  j@dt-X64:~/tmp$ lzma --best --stdout data.tar > data.tar.lzma
  j@dt-X64:~/tmp$ xz -9e --stdout data.tar > data.tar.xz
  j@dt-X64:~/tmp$ ls -l
  total 152200
  -rw-rw-r-- 1 j j 76554240 avril 13 03:36 data.tar
  -rw-rw-r-- 1 j j 21535313 avril 14 10:50 data.tar.bz2
  -rw-rw-r-- 1 j j 25349980 avril 14 10:50 data.tar.gz
  -rw-rw-r-- 1 j j 16216010 avril 14 10:53 data.tar.lzma
  -rw-rw-r-- 1 j j 16146476 avril 14 12:34 data.tar.xz
  j@dt-X64:~/tmp$
  -----

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: openjdk-6-jre-headless 6b24-1.11.1-4ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  ApportVersion: 2.0.1-0ubuntu2
  Architecture: amd64
  Date: Sat Apr 14 13:13:38 2012
  InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  SourcePackage: openjdk-6
  UpgradeStatus: No upgrade log present (probably fresh install)

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