Benchmarking of the Pi 4 using the Python GPIO Zero library shows a significant increase in the frequency of toggling a GPIO pin on and off compared to previous models. This result is attributed to the higher CPU speed.
Other benchmarks, e.g. Raspberry Pi 2 vs. 1 GPIO Benchmark however show a large range of results depending on the language / library. These numbers are substantially higher than those reported for the Python GPIO Zero library.
How does the Pi 4 GPIO perform using the different libraries (with a focus on C and the respective Python wrappers but other languages are also welcome)?