General Performance Issues Viewing Large Pictures

[Tonio Kroeger]

Hi all,

I am an enthusiastic digikam user for nearly 20 years now!

I am running 8.0.0. on an I7 under Linux with plenty of RAM (
https://www.intel.com/content/www/us/en/products/sku/205608/intel-nuc-11-pro-mini-pc-nuc11tnkv7/specifications.html).
My picture collection became huge, about 8TB (also many RAW files, roughly
300.000 Jpegs), and I still use SQLLite for the database.

In general everything works fine but when I switch to another picture this
takes up to 3 seconds. This is very anyoing especially when sorting out
pictures. For the latter purpose I store incoming pictues on the internal
SSD but this leads exactly to the 3 seconds from above, external USB-drive
is worse but not as worse as I would expect. I tried to precache all
pictures into RAM, that did not significantly help. When I lower the
maximal CPU frequency this seems to scale linearly with the time to show a
new picture.

Over the years my pictures became larger and larger. Today I have Jpegs
around 20MB. (5MB Pics from my IPhone show up very fast.)

I wonder whether someone can give a hint where I might have an issue with
my system. Is SQLLite a problem in my setting? Or are the 3 seconds just my
fate because of the many megapixel...

Best wishes & tnx

Tonio
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