[KPhotoAlbum] Thumbnails missing with latest git

Johannes Zarl johannes at zarl.at
Thu Jan 15 17:18:34 GMT 2015

On Thursday 15 January 2015 08:01:56 Robert Krawitz wrote:
> On Thu, 15 Jan 2015 12:05:27 +0100, Tobias Leupold wrote:
> >> What is the purpose behind the incremental thumbnails?
> > 
> > I can at least answer this one: If the thumbnail size is changed, the
> > default KPA behavior was that _all_ thumbnails were recalculated, which
> > is painfully slow if the collection is on NFS. KPA even was e. g.
> > unresponsive for about 15 minutes for "only" 8000 photos in my case.
> > 
> > With the "on-demand" thumbnails, they are built as they are requested
> > (viewed). So the lag distributes to many small operations instead of one
> > big. This way, KPA keeps being responsive with only small lags, which is
> > surely a more desirable behavior. For local collections the lag should be
> > that short that the user won't really notice the thumbnail building. So
> > in this case it doesn't hurt, and for NFS users, it's far better.
> On the other hand, this likely means it will be slower if I read in
> several thousand new photos and want to quickly scroll through the new
> thumbnails.  Is that correct?  Normally I load the images and wait for
> the thumbnails to build.

No, having KPA build the thumbnails when new images are found should still 

You also write that your thumbnails stopped working between April and 
November, but the change w.r.t. on-demand building of thumbnails was last week 
or so...


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