Added small section about benchmarks

Author: chandr-andr

README.md

@@ -422,4 +422,18 @@ async def main() -> None:
     # You don't need to close Database Pool by yourself,
     # rust does it instead.
 
-```
+```
+
+## Benchmarks
+We have made some benchmark to compare `PSQLPy`, `AsyncPG`, `Psycopg3`.
+Main idea is do not compare clear drivers because there are a few situations in which you need to use only driver without any other dependencies.
+
+**So infrastructure consists of:**
+1) AioHTTP
+2) PostgreSQL driver (`PSQLPy`, `AsyncPG`, `Psycopg3`)
+3) PostgreSQL v15. Server is located in other part of the world, because we want to simulate network problems.
+4) Grafana (dashboards)
+5) InfluxDB
+6) JMeter (for load testing)
+
+The results are very promising! `PSQLPy` is faster than `AsyncPG` at best by 2 times, at worst by 45%. `PsycoPG` is 3.5 times slower than `PSQLPy` in the worst case, 60% in the best case.