Re: [CentOS] minimize download bandwidth techniques

On Thu, 12 Apr 2007, John R Pierce wrote:

Dale Sykora wrote:

...

I know of a few techniques for minimizing server bandwidth when bittorent is not an option.

1. If you have the beta isos, you can rename them as centos 5 isos and

then rsync from a mirror that allows rsync (such as kernel.org). Then only changes from beta to centos 5 plus some overhead is downloaded. I suppose you could use this technique with bittorrent too.

if one file near the beginning of the ISO changes size by even a block, then the whole rest of the ISO will be different, this will gain you nothing.

With bittorrent, that is perhaps true. Rsync will be able to handle that difference. But if most RPMs are rebuild that it will have not much matching data.

Wojtek