Re: Compression speed for large files

From: Elrond <elrond+kernel.org@samba-tng.org>
Date: Jul 3, 2006, 12:42 UTC
Message-ID: <loom.20060703T143544-407@post.gmane.org>
In-Reply-To: <81b0412b0607030503p63b4ee31v7776bd155d3dab29@mail.gmail.com>

Joachim B Haga <cjhaga <at> fys.uio.no> writes: [...]

Show 6 quoted lines

>   method                 time (s)  object size (kB)
>   Z_BEST_COMPRESSION     62.0      17136
>   Z_DEFAULT_COMPRESSION  10.4      16536
>   Z_BEST_SPEED            4.8      17071
> 
> In this case Z_BEST_COMPRESSION also compresses worse,

[...]

I personally find that very interesting, is this a known "issue" with zlib? It suggests, that with different options, it's possible to create smaller repositories, despite the 'advertised' (by zlib, not git) "best" compression.

Alex Riesen <raa.lkml <at> gmail.com> writes: [...]

> Probably yes, as a per-repo config option.

The option probably should be the size for which to start using "default" compression.

    Elrond