Re: metadata compression

I am keeping track of 16 RHEL channels, using createrepo with the standard
gzip I am totaling 1.4 GB of metadata. Compressing those same XML documents
with LZMA yields a total of 140 MB. That's 10x savings overall, I think
that's worth a look.

On Sun, Apr 19, 2009 at 6:44 AM, James Antill <[email protected]> wrote:

> Joshua Bahnsen <[email protected]> writes:
>
> > Is there support for compression types other than gzip for the yum
> metadata?
> > For example, bzip2 or LZMA?
> >
> > It is possible to trim the metadata from 145 MB down to 9 MB using LZMA
> over
> > gzip. That's huge, especially when it comes to yum mirrors. Bzip2 doesn't
> > yield nearly as high of a compression ratio, but it is also improved over
> > gzip. The largest culprit with wasted filesize is other.xml, there is a
> ~30x
> > difference in size between LZMA and gzip (66 MB to 2MB).
> >
> > If there is a way to do this and I am missing it, I apologize.
>
>  Pass --database and it'll create those with bzip2. Adding another
> compression method means adding another set of entries, to be
> backwards compatible, so is unlikely to be worth it unless it saves a
> lot of bytes.
>
> --
> James Antill -- [email protected]
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>

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