On Sat, Feb 16, 2013 at 3:00 AM, Rob Z. Smith <[email protected]> wrote: >>-----Original Message----- >>From: Marcin Sikora [mailto:[email protected]] > >>Solved :-) > > Great! > >>What I have learnt. Please, correct me if I’m wrong. >>I believe that when the pictures are imported to the database on the local >>machine and thumbnails are >generated. Then there is no much data traffic >>between original picture data and DT, except the situation when >we want to >>develop the picture in Darkroom. Switching back to the Light table is not >>dependent on the location >where original pictures are stored. > > Now, having much to learn on dt myself, I am open to correction but I don't > think it works quite like that. AFAIK dt doesn't permanently store > thumbnails but generates them 'as required' and keeps them in the > ~/.cache/darktable directory. I *think* that when you do the initial photo > load it is creating database records and indexing those rather than creating > thumbnails, so this should be very much a one off activity. In subsequent > use when collections are opened in the light table thumbnails are required > (and if necessary generated) for the displayed images only. When you scroll > the light table different thumbnails are of course then required and obtained > from the .cache directory or generated if not already there. This generally > works well I think but you get problems if the cache size isn't large enough > to hold thumbnails for all your collection, in this case when you scroll the > light table thumbnails are continuously being discarded and regenerated and > predictably it is slow - hence the general advice to limit the size of > collections you read into the light table or (very much second best) > configure a huge cache area. > > I hope that helps - and isn't factually wrong :-)
right. also going from dr->lt might re-create that thumbnail again for lighttable mode in the correct sizes. > Rgds, > Rob. > [removed garbage] ------------------------------------------------------------------------------ The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials, tech docs, whitepapers, evaluation guides, and opinion stories. Check out the most recent posts - join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
