[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: deb diff format (debiff) proposal

On Sun, Dec 03, 2000 at 02:24:01PM -0600, Adam Heath wrote:
> All mirrors will still have to store the latest version of a deb.  This is in
> case the end machine has an older version of that package, that is out of
> range of the .debiff.
> They will also have to store M revisions(or N old days), and this could
> quickly bloat.
> Is there an limit as to how small the .debiff file needs to be, before storing
> a new full .deb would be beneficial?
Yes. You dont have to store the older debs, you only need the two last
revisions to build a chain of diffs. This means that a user with an older version has 
to download one extra-diff for each revision that he skipped. 
Old diffs are not beneficial when the sum of the size of all stored diffs is
over a certain limit, say 75% of the latest deb. This would still almost double
the needed storage, but it could also reduce the required bandwidth of the
mirrors significantly.


Attachment: pgpKIV53_DCwS.pgp
Description: PGP signature

Reply to: