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gzip bug


From: Curtis Caravone
Subject: gzip bug
Date: Tue, 21 Sep 2010 21:47:02 -0700

It seems like gzip with the -l and --verbose options is sometimes returning
the wrong totals for compressed and uncompressed size.

My data set is 50G worth of files, each around 25-100M, and I was not
immediately able to reproduce the problem on a smaller set.

For the dataset in question, gzip -l --verbose returns totals that equal
about (but not exactly) 1/2 of the real totals for compressed and
uncompressed sizes.

It appears that the individual numbers for each file are correct, but only
the totals are wrong.

Here's my version info:

gzip 1.3.5
(2002-09-30)
Copyright 2002 Free Software Foundation
Copyright 1992-1993 Jean-loup Gailly
This program comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of this program
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.
Compilation options:
DIRENT UTIME STDC_HEADERS HAVE_UNISTD_H HAVE_MEMORY_H HAVE_STRING_H
HAVE_LSTAT
Written by Jean-loup Gailly.

Linux version 2.6.18-194.8.1.el5 (address@hidden) (gcc
version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Thu Jul 1 19:04:48 EDT
2010

This is a centos x86 64-bit system.

thanks,

Curtis


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