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Bug 338631 - Use ZPAQ instead of LZMA for portage tree snapshots.
Summary: Use ZPAQ instead of LZMA for portage tree snapshots.
Status: RESOLVED WONTFIX
Alias: None
Product: Portage Development
Classification: Unclassified
Component: Enhancement/Feature Requests (show other bugs)
Hardware: All Linux
: High enhancement
Assignee: Portage team
URL:
Whiteboard:
Keywords:
Depends on: 278021
Blocks:
  Show dependency tree
 
Reported: 2010-09-25 02:12 UTC by dE
Modified: 2010-10-08 04:16 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description dE 2010-09-25 02:12:57 UTC
Since the size of portage is growing fast, higher compression makes sense.

ZPAQ is the most efficient, powerful and flexible (verity in compression levels) compression algorithm; the standard portage tarball can be compressed to 22 mb using 'mid.conf'.

First zpaq needs to be put in portage, then this will be possible.

Reproducible: Always

Steps to Reproduce:
Comment 1 Michał Górny archtester Gentoo Infrastructure gentoo-dev Security 2010-09-25 08:39:22 UTC
Don't think that's going to happen. LZ* variants have a big advantage over PAQ* in decompression speed.
Comment 2 Jeroen Roovers (RETIRED) gentoo-dev 2010-09-25 16:10:29 UTC
(In reply to comment #0)
> Since the size of portage is growing fast, higher compression makes sense.

Is it? Got any numbers?

> ZPAQ is the most efficient, powerful and flexible (verity in compression
> levels) compression algorithm; the standard portage tarball can be compressed
> to 22 mb using 'mid.conf'.

Again we need numbers, comparing one against the other.

> First zpaq needs to be put in portage, then this will be possible.

Right.
Comment 3 dE 2010-10-08 04:16:25 UTC
There's a major problem with zpaq... it cant compress directories, the user will have to extract the zpaq archive and then the extracted tar (off which the zpaq archive was made) making it cumbersome.