Your message dated Tue, 03 Jul 2007 19:39:22 +0200
with message-id <[EMAIL PROTECTED]>
and subject line Bug#429550: Does not compress bzImage files as well as 2.03
has caused the attached Bug report to be marked as done.
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If this is not the case it is now your responsibility to reopen the
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--- Begin Message ---
Package: upx-ucl
Version: 3.00-1
Severity: normal
I compress kernels for a project I work with and I noticed that v3.00
compresses worse than v2.03 (~5k worse)
/usr/src/linux$ upx-ucl -f -9 bzImage
Ultimate Packer for eXecutables
Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007
UPX 3.00 Markus Oberhumer, Laszlo Molnar & John Reiser Apr 27th
2007
File size Ratio Format Name
-------------------- ------ ----------- -----------
908856 -> 855959 94.18% bvmlinuz/386 bzImage
Packed 1 file.
/usr/src/linux$ cp arch/i386/boot/bzImage
bzImage
/usr/src/linux$ upx-ucl -f -9 bzImage
Ultimate Packer for eXecutables
Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006
UPX 2.03 Markus Oberhumer, Laszlo Molnar & John Reiser Nov 7th
2006
File size Ratio Format Name
-------------------- ------ ----------- -----------
908856 -> 850986 93.63% bvmlinuz/386 bzImage
Packed 1 file.
/usr/src/linux$
-- System Information:
Debian Release: 3.0
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.20
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages upx-ucl depends on:
ii libc6 2.5-10 GNU C Library: Shared libraries
ii libgcc1 1:4.2-20070609-1 GCC support library
ii libstdc++6 4.2-20070609-1 The GNU Standard C++ Library v3
ii libucl1 1.03-2 Portable compression library - run
ii zlib1g 1:1.2.3-13 compression library - runtime
upx-ucl recommends no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
William Thompson wrote:
> Package: upx-ucl
>
> I compress kernels for a project I work with and I noticed that v3.00
> compresses worse than v2.03 (~5k worse)
>
The upstream authors do not agree it's a bug, so I'm closing the bug
report now. Quoting John Reiser (see
http://sourceforge.net/tracker/index.php?func=detail&aid=1745655&group_id=2331&atid=102331):
--------------------------------------------------------------
The difference of 8965 bytes (0.62% in compression ratio) is within
reasonable statistical variation for compression; many other files improved
by about that much or more. Also, upx-3.00 offers LZMA compression, which
compresses significantly more tightly, at a cost of decompression speed
(about 10x: approximately 1.5s for --lzma, 0.15s for --nrv2e) and stack
space during decompression (28KB instead of less than 100 bytes.)
$ upx-3.00-i386_linux/upx --lzma -f -o foo-3.00 vmlinuz-2.6.21-1.3194.fc7
Ultimate Packer for eXecutables
Copyright (C)
1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007
UPX 3.00 Markus Oberhumer, Laszlo Molnar & John Reiser Apr 27th
2007
File size Ratio Format Name
-------------------- ------ ----------- -----------
1883604 -> 1452242 77.10% bvmlinuz/386 foo-3.00
--------------------------------------------------------------
Note, the LZMA support is not (yet) compiled in upx-ucl. The --lzma
option is currently available only with upx-nrv.
Best Regards,
robert
--- End Message ---
