>-----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 :-) Rgds, Rob. The content of this email is private and confidential, and unless otherwise stated only the intended recipient may use the content of this email for its intended purpose. If you are not the intended recipient, you may not retain, copy, forward or disclose the information herein, and we ask you to notify the sender or contact our Customer Services department on 0844 633 1000 or at [email protected] The copyright and all other intellectual property rights subsisting in or to the contents of this email belong to NHBC or are used with the permission of the owner and all such rights are reserved. Recipients are asked to note that opinions, conclusions and other information in the contents of this email that do not relate to the official business of NHBC are neither given nor endorsed by NHBC. This email has been scanned for viruses, but NHBC does not accept any liability in respect of loss or damage caused by any virus which is not detected by its virus detection systems. Data Protection Act 1998. NHBC is the Data Controller for the purposes of the Act. Your personal details will be stored and processed in accordance with the Act for the purposes of dealing with your enquiry or claim and for research and statistical purposes. If you make a claim under a Buildmark policy you agree to your data being passed to others involved with your claim such as the original builder, or a consultant or remedial works contractor that we may employ in connection with your claim(s) and matter ancillary to your claim(s). Other than disclosure provided for in this statement, we will not pass any data about you to any other party without your permission unless we are required to do so by law. NHBC, the National House-Building Council, is a company registered by guarantee in England, registration number 320784, and it is authorised and regulated by the Financial Services Authority. ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
