Re: [gentoo-dev] Re: 2004.2 Feature Requests

[Jason Stubbs <jstubbs@gentoo.org>]

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On Sunday 02 May 2004 12:40, Jon Portnoy wrote:
> On Sat, May 01, 2004 at 01:46:00PM -0400, Jerry McBride wrote:
> > Move away from the filesystem database that portage currently uses to
> > something with a bit more perfomance... mysql, sqlite even postgres... An
> > SQL backend interface would be WONDERFUL.
> >
> > Port portage to c or c++. Python sucks in the performance department...
> > If not port to c then atleast start using psyco for a small perf boost...
> > Rebuilding the cache (reading files) after a sync is... terrible... What
> > a kludge...
>
> The performance issues are db-related, nothing at all to do with Python.

The performance issues are partially db-related, but the biggest "problem" is 
having to call bash. The current caching in portage is still stored in a 
file-based "database". The difference in access times of the portage database 
and the cache is that the cache files have a set format.

Dropping the cache "kludge" and reading directly from the portage database 
(whether flat-file or sql or whatever) would require huge changes in the 
structure of ebuilds themselves. At minimum, it would require no usage of 
bash in the global section. This is something that will need a *lot* of work.

Regards,
Jason Stubbs
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