http://sparrowa7io5pz6ud3ehqzosvepbxbxt2zphmkjsylp2zgxooko23pqd.onion/docs/server-performance.html
Even with this in mind, the performance of Fulcrum is remarkable.
It is clear that being written in modern C++17 is particularly advantageous, not only because it is faster, but because performance is consistent across platforms.
In the case of ElectrumX, Python appears a less suitable choice for this application.