[KPhotoAlbum] Groups search performance pondering..

[Risto H. Kurppa]

It's great that Robert & Jesper are able to find solutions for more
performance, good work guys!

One thing I started pondering today about locations (applies as well
to persons & keywords) , their groups & search:

Which is faster to search:
-search a set of images that all have 'full tags' (for example
locations: europe, finland, helsinki ......)
-search a set of images that has location 'Helsinki' that belongs to
group 'finland' that belongs to group 'europe' that...

How do the groups work - how is the information saved (I suppose it's
not saved to every image but a separate 'groups' part where
KPhotoalbum checks if it needs to search also for some other keywords,
(for example Finland), if you filter for all 'Europe' - photos..?

I'd guess there it's also possible to do some performance adjustment..?

Thanks!

(And Jesper: I was asking about the lost 'folders' - search pane..
It's gone, I can't filter for images that are in 'this, this or this'
folder and some other users reported the same as well.. What's
happened?)


r


On 2/11/06, Robert L Krawitz <rlk at alum.mit.edu> wrote:
> Another thing I notice last night is that applying filters is
> noticeably slow -- if I'm at top level (with 11000 images) and select
> a grouping that has only 7 images in it, it takes a few seconds (on an
> 1800 MHz processor) for the selection to happen.  I don't think that
> this is quadratic in the number of images, but it may be related to
> the number of images and number of categories with a fairly large
> constant.  It looks like it's somewhere in the
> XMLDB::XMLDB::Classify() and ImageSearchInfo::match() code path.