From: Harald Hanche-Olsen <hanche@math.ntnu.no>
To: emacs-devel@gnu.org
Subject: Re: Could distributed tarballs be compressed with xz instead of bzip2?
Date: Wed, 01 Feb 2012 14:44:03 +0100 (CET) [thread overview]
Message-ID: <20120201.144403.1094832127104478565.hanche@math.ntnu.no> (raw)
In-Reply-To: <20120201.103113.77509397861740525.hanche@math.ntnu.no>
[Harald Hanche-Olsen <hanche@math.ntnu.no> (2012-02-01 09:31:13 UTC)]
> On the other hand, a cursory glance at the xz manual page indicates
> that xz may have rather extreme memory requirements: Several gigabytes
> in some cases! Is that something to worry about?
I looked a bit more carefully, and it seems there is little reason to
worry, at least if compression is done with the default setting (-6).
Even with compression level at -9, the memory requirement for
decompression is only 65 MiB, which is not a problem on modern
computers (though I think many emacs users are still on quite old
hardware). I guess the extreme memory requirements come from unusual
combinations of the many flags affecting the detailed operations of
the compression algorithm, and should be of little concern for regular
use.
- Harald
next prev parent reply other threads:[~2012-02-01 13:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-29 10:46 Could distributed tarballs be compressed with xz instead of bzip2? Ulrich Mueller
2012-02-01 2:51 ` Chong Yidong
2012-02-01 2:51 ` Chong Yidong
2012-08-20 7:38 ` Ulrich Mueller
2012-02-01 9:31 ` Harald Hanche-Olsen
2012-02-01 13:44 ` Harald Hanche-Olsen [this message]
2012-02-01 17:13 ` Ulrich Mueller
2012-02-01 14:11 ` Stefan Monnier
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