Mailinglist Archive: opensuse (1126 mails)

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Re: [opensuse] compression tool with high compression ratio, multiple files and fast random access?
  • From: "Wilfred van Velzen" <w.v.velzen@xxxxxxxxx>
  • Date: Wed, 01 Sep 2010 09:47:44 +0200
  • Message-id: <4C7E21400200008D00004760@xxxxxxxxxxxxxx>

On 2010-09-01 at 09:22, Per Jessen <per@xxxxxxxxxxxx> wrote:
I'm looking for a compression tool (lzma, gzip, zip et al) with the
following characteristics:

1. high compression ratio
2. multiple files per archive
3. very fast decompression/extraction of single files

One of the best from the compression rate point of view is 7z (well, I
know it depends on the type of files you are compressing). It
definitely satisfies 2. No idea about 3, but worth trying.

Thanks Mark - the last one I tried was indeed 7z (p7zip in the Linux
variation), but it fails miserably on 3. AFAICT, when extracting a
single file, it scans the complete archive.

Try compressing with '-ms=off' option for p7zip and test decompression speed
again...



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Met vriendelijke groet / Best regards,
Wilfred van Velzen



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