When does Aves triggers rescanning of all media? ("Cataloguing" notification)

[Self-Perfection]

A started using Aves about 40 days ago

And during that time I have seen it "cataloguing" my media about 4 times.

This is a lengthy process, which takes about 20 minutes on my modest library of 5k files and considerably heats the device.

How can I avoid extra rescans?

[deckerst]

Are you often changing time zones?

[deckerst]

This is strange. I believe your device should catalog way faster than this.

As comparison, here's what I got on a Sony Xperia 5 V:

• 9442 items catalogued in 1’21
• 5728 items located in 1’28

More like ~100 items catalogued per second, and ~50 located per second (but there are various factors with reverse geolocating, so it varies widely depending on the collection and device).

[Self-Perfection]

Interesting. I agree from base principles, that 3-4 items per second seem quite slow.

I have only ~150 items without geotags, so it hard to estimate their rescan rate separately, but it seems items without geotags are processed about 10-20x times faster than with geotags.

[deckerst]

Just to clarify, scanning happens in 2 steps: first cataloguing (for all items), then locating (only for items with geotags, a subset of the first step). In the scanning notification, you can see the progress for each step.

You mentioned CalyxOS, but do you have the regular Google Mobile Services installed? I'm asking because the locating step relies on the geocoding service installed (if any). It's typically served by GMS, but some people use alternatives like Nominatim.

[Self-Perfection]

I never explicitly installed Google Mobile Services. I suppose microG acts on its behalf.

I ran a few more tests and now get more confused.

Speed of locating step varies greatly during one test. It might advance by 3 items in one step and 30 items in the next. Maybe results for some location get cached and reused if the next image is close enough?

I cannot reproduce baseline cataloguing speed of 3-4 images per second, now it is more like 10 per second.

With occasional bursts of speed to ~50 per second. It is not just images without geo metadata processed fast, some with geolocation are processed fast as well.

I am quite confused.

[deckerst]

Maybe results for some location get cached and reused if the next image is close enough?

Yes I cache the results to avoid querying the geocoder service for known coordinates.

It is not just images without geo metadata processed fast, some with geolocation are processed fast as well.

In the cataloguing step, whether an item has geo metadata doesn't matter much. I believe the speed would depend more on the media format. Videos are slower to process. Maybe HEIC and AVIF too.