Package: tar
Version: 1.20-1
Severity: normal
When running "tar tf" on a large tarball containing few large files, tar
becomes incredibly slow. The reason for this is that tar issues many
read()s to skip the file content, but as it doesn't need the content, it
throws it away. GNU tar could just use lseek() like libarchive and busybox
do.
Also a problem is extracting only one file from said tarball, where the
other files do not need to be read for just that one to be extracted.
The problem exists on all versions of GNU tar and was confirmed to exist
on at least all versions starting from etchthe one shipped with Etch.
-- System Information:
Debian Release: 5.0.2
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.26-2-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages tar depends on:
ii libc6 2.9-12 GNU C Library: Shared libraries
tar recommends no packages.
Versions of packages tar suggests:
ii bzip2 1.0.5-2high-quality block-sorting file co
pn ncompress (no description available)
-- no debconf information
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