Why do responses take so long?

[balazsdukai]

The initial suspicion was that the bbox queries and reading the surface data from the csv files is too slow. However, much much more time is spent on other things than on the functions that get the data for the response.
See https://github.com/3DGI/3dbag-api#performance and #14 (comment) and #15 (comment).

Thus these functions are by far not the bottlenecks in the response times, but what is?
The profiler statistics in /profiling is a good starting point.

[balazsdukai]

Maybe look into this too https://stackoverflow.com/a/68151933

[balazsdukai]

There is the uwsgi listen queue which need to be checked. Although, it is almost certainly not the issue in the benchmarks

https://stackoverflow.com/questions/21104066/nginx-uwsgi-flask-app-performance-test-with-ab