Hi,

On Sun, 19 Jul 2009, Bruno Friedmann wrote:

> Most of the data are compressible ( exchange server storage, and Navision 
> Database ) at a 75% rate with gzip2
> we have 78% with gzip6 but it double easyly the time need to obtain it. So 
> sometime it doesn't help to try to do big compression.
> 
> Is it more clear ?

Sorry, yeah I was thinking about it after and realised that I was thinking
of the wrong definition of compression ratio (ie it's how much it reduced
/by/ not /to/ so 78% is better than 72%).  My mistake.

> > Another useful feature might be a wildcard "excludefromcompression"
> > directive so you could say:

> > This might avoid wasting time trying to compress the unccompressible while
> > gaining the compression ratio on those files which gain from it?
> 
> Wouah, that would be nice, is this already working with recent bacula version 
> ?

Not that I've heard of.  I was just thinking out loud.

> > On the other hand, perhaps it would complicate the job or the volume layout
> > too much to mix compressed with uncompressed data?
> 
> Raah your last comment tend to me to believe, bacula should be capable of 
> excluding from compression.
> If it's not already asked, could you put a request for enhancement be sure I 
> will vote to it.

I can.  I wonder is there someone on this list who could advise us if this
is practical though?

Gavin


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