Re: rpmdb compression?

[Erik Troan <ewt redhat com>]

On Fri, 25 Aug 2000, Jeff Johnson wrote:

> Rpm-4.0 uses db3 hash access for package headers, with a monotonically
> increasing instance number as retrieval key. Not using the packages.rpm
> offset as retrieval key means that dynamic garbage collection is possible, but
> then there are other performance heuristics (e.g. no. items per hash bucket)
> that may increase the size of the package header database (read: I dunno
> whether /var/lib/rpm/Packages is gonna be larger or smaller than
> /var/lib/rpm/packages.rpm).

It will almost certainly be larger right after --rebuilddb, but have a
significantly smaller steady state ( which is much more important). Nice
work on the db switch Jeff.

Erik

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