We use an in-product profiler (discussed here: https://www.feldera.com/blog/introducing-feldera's-visual-profiler https://www.feldera.com/blog/introducing-felde

We use an in-product profiler (discussed here: https://www.feldera.com/blog/introducing-feldera's-visual-profiler https://www.feldera.com/blog/introducing-feldera's-visual-pr...), along with CPU profiles to identify where in the code we're spending time.