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Re: Please test gzip -9n - related to dpkg with multiarch support

Wouter Verhelst <wouter@debian.org> writes:

> On Thu, Feb 09, 2012 at 03:45:50AM +0100, Guillem Jover wrote:
>> While this could benefit the multiarch installations (for which they
>> can easily use --path-exclude), it would use lots more space on single
>> arch installations.
> Does it really?
> A quick test tells me that uncompressing every file under /usr/share/doc
> does indeed increase the size of that directory on my laptop by a factor
> of approximately two: 
> After running "sudo find /usr/share/doc -name '*.gz' -exec gunzip {} \;",
> the size of that directory is as reported by 'du -s' is 1263220
> kibibytes, while it was 757280 before, a difference of 505940.
> This is on a system with 2524 packages installed, for a grand total
> of...
> dpkg-query -W -f '${Installed-Size}\n' | awk '{TOT+=$0} END{print TOT}'
> 8830371
> ... approximately 8.5GiB of installed software. While I agree that
> adding around 500MiB to that installed size is significant, I wouldn't
> define it as 'lots more space'. Additionally, it should be possible for
> dpkg to support compressing at install time for those users who request
> it, based on a configuration parameter.

Note that only a fraction of that would be in MA:same packages.
Everything else can stay compressed. Some other test (see other mails in
thread) estimated an increase of 60MB.


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