Reference all performance bottlenecks highlighted by "air traffic" example

[teh-cmc]

The recently added air traffic example highlights a lot of performance bottlenecks in every single corner of the app (and probably SDK too now that I think of it...).

All these bottlenecks should have a dedicated issue explaining what's going on so we can investigate them at some point.

The first thing to try out is the cleaned up dataset, which demonstrates a lot of performance issues with normal looking data:

python examples/python/air_traffic_data/main.py --dataset 2h

and then move on to the raw dataset, which adds another layer of issues specific to ill-formed data (which ironically is more likely to be what's in the wild):

python examples/python/air_traffic_data/main.py --dataset 2h --raw

[abey79]

• related: Consider a mode where the UI is "off" during ingestion, in order to limit the UI-specific overhead #5812

[teh-cmc]

Let's see how that behaves once 0.18 is ready to go.

[emilk]

This hits the performance problem of many entities:

• Rerun viewer becomes slow when there are several hundreds of entities #7115

[abey79]

0.18 significantly increase frame time on my computer (3d view latest at and one plot with all data)

top 0.17, bottom main as of today.

[Wumpf]

We have a decent understanding of this by now, see writeups in

• Project: Performant visualization of scenes with large number of entities #8233