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Re: [rdiff-backup-users] Enhancement request: other compression methods

From: Mr. Clif
Subject: Re: [rdiff-backup-users] Enhancement request: other compression methods
Date: Mon, 5 Feb 2018 10:38:18 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0

+1 here,

by the way, it's highly desirable if your compression algorithm keeps changes localized so rsync can efficiently just transfer the differences. Right now gzip, and it's multi-threaded version pigz are the only compression utilities that provides this "--rsyncable" option. The others tend to change every block coming after the first difference.


On 08/26/2017 12:23 PM, Yves Bellefeuille wrote:
I'm not sure how useful it would be to suggest enhancements, but here's

rdiff-backup uses gzip for compression. With modern multi-core
processors, that's not efficient. I'd like to suggest an option to use
other compression programs, for example bzip2 or xz, or even multi-
threaded compressions programs, such as pbzip2 or pxz.

As I understand it, pigz ( https://zlib.net/pigz/ ) is fully backward-
compatible with gzip, so perhaps that would be the easiest solution.

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