Your message dated Sat, 04 Aug 2012 03:02:54 +0000
with message-id <[email protected]>
and subject line Bug#679774: fixed in poppler-data 0.4.5-10
has caused the Debian Bug report #679774,
regarding poppler-data: Uses too memory hungry xz compression
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
679774: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=679774
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: poppler-data
Version: 0.4.5-8
Severity: normal

poppler-data 0.4.5-8 uses xz compression with "-Sextreme -z9" settings.
I think it's overkill (-6e should be enough).
Xz memory use when building this package is now 674 MiB and 65 MiB
is required when decompressing during installation.

xz(1) manual page says:

The differences between the presets are more significant
than with gzip(1) and
bzip2(1). The selected compression settings determine the
memory requirements of
the decompressor, thus using a too high preset level might
make it painful to
decompress the file on an old system with little RAM. 
Specifically, it's not a
good idea to blindly use -9 for everything like it often
is with gzip(1) and bzip2(1).

Here is a table of memory use with different presets:
                     Preset   DictSize   CompCPU   CompMem   DecMem
                      -0e     256 KiB       8        4 MiB    1 MiB
                      -1e       1 MiB       8       13 MiB    2 MiB
                      -2e       2 MiB       8       25 MiB    3 MiB
                      -3e       4 MiB       7       48 MiB    5 MiB
                      -4e       4 MiB       8       48 MiB    5 MiB
                      -5e       8 MiB       7       94 MiB    9 MiB
                      -6e       8 MiB       8       94 MiB    9 MiB
                      -7e      16 MiB       8      186 MiB   17 MiB
                      -8e      32 MiB       8      370 MiB   33 MiB
                      -9e      64 MiB       8      674 MiB   65 MiB



--- End Message ---
--- Begin Message ---
Source: poppler-data
Source-Version: 0.4.5-10

We believe that the bug you reported is fixed in the latest version of
poppler-data, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Hideki Yamane <[email protected]> (supplier of updated poppler-data package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])


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Format: 1.8
Date: Sat, 04 Aug 2012 11:46:18 +0900
Source: poppler-data
Binary: poppler-data
Architecture: source all
Version: 0.4.5-10
Distribution: unstable
Urgency: low
Maintainer: Hideki Yamane <[email protected]>
Changed-By: Hideki Yamane <[email protected]>
Description: 
 poppler-data - encoding data for the poppler PDF rendering library
Closes: 679774
Changes: 
 poppler-data (0.4.5-10) unstable; urgency=low
 .
   * debian/rules
     - use default xz compression rate is better result than -z9 -Sextream
       (Closes: #679774)
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poppler-data_0.4.5-10.debian.tar.gz
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poppler-data_0.4.5-10.debian.tar.gz
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poppler-data_0.4.5-10_all.deb

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