https://bugs.kde.org/show_bug.cgi?id=499170

--- Comment #3 from Michael Miller <[email protected]> ---
(In reply to fuerallesg from comment #2)
> Hi Mike,
> 
> Thank you for checking the process again. 
> 
> I did a small test run and added 20 images to a test folder:
> https://drive.google.com/file/d/1ddQVKUrV1enS8E5mlUur0_wl7ElwEiFb/
> view?usp=sharing
>  The import process was started by pressing F5 while clicking on the folder
> in the album view (line 380). Although the option "Detect faces in newly
> added images" is enabled, I could not find any tags (maybe I did not wait
> long enough). So I started "Detect faces" by right-clicking on the folder
> (line 1258). After the process bar showed 100% and no active process was
> indicated, I switched to the people view (line 1840). A few thumbnails were
> already created. The rest started to be created until everything was fine
> (maybe I did not wait long enough). 
> On previous imports with a larger collection, the result was similar, some
> thumbnails were created, but not all. There were several hours of waiting in
> between.
> Perhaps the problem is that the process works fine in general, but changing
> the view starts the thumbnailing process all over again. 
> 
> Last time I also could identify the network bandwith as the limit for the
> process. This time the load was quite low (cpu/gpu as well) although it took
> much longer for each image (maybe because of heic instead of raw). Feel free
> to use more resources for a higher speed in case it does not depend on an
> external library.
> https://drive.google.com/file/d/1HlXRG37pR-aY3iGpkINeXQOK0cYXQ3mp/
> view?usp=sharing
> 
> I will run an additional test with more images and increase the waiting time
> to several hours in between so that I can check again if the whole process
> runs as one pipeline. Additionally, I will avoid changing views for each
> step.
> 
> BR Mik

Hi Mik,
You're correct that the initial import does it's own load of the image, and the
face pipeline does another load.  I rewrote the face pipeline in 8.6.0, but I
think you're right we should have a fully integrated single-read pipeline for
importing images.  It should read the image once, and then do image thumbnail
creation, face pipeline, Image Quality Sort, autotagging, and all other
functions that require loading the image.  I like this.  I'll take it to the
rest of the team and see what we can come up with for 8.7.0 or 8.8.0.

Cheers,
Mike

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