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Re: [Lzip-bug] performance: gzip, lzip, xz

From: Tino Lange
Subject: Re: [Lzip-bug] performance: gzip, lzip, xz
Date: Thu, 08 Oct 2009 09:33:39 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20090817 Lightning/0.9 Thunderbird/ Mnenhy/

Antonio Diaz Diaz schrieb:


>> What is the comparision for detecting and recovering damaged files?

> Integrity checking reliability is better in lzip that it is in gzip.
> Lzip uses 64 bits for file size against the 32 bits of gzip, and also
> stores the member size, which gzip does not. Last time I checked,
> integrity checking was optional in xz.

AFAIK xz has integrity checking turned on by default -- at least
nowadays, dunno about earlier versions -- they use crc64 for the data
and crc32 for the header. The algorithm for the data can be changed via
"-C abc" or "--check=abc"



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