README: Link to benchmark repo

README.md

@@ -18,6 +18,14 @@ Where `FILENAME` is a file describing the input. Examples are in
 
 Command line syntax is described in `stack exec -- copar --help`.
 
+## Benchmarks
+
+Extensive benchmarks of CoPaR on different input files can be found at
+[gitlab.cs.fau.de/hpd/copar-benchmarks](https://gitlab.cs.fau.de/hpd/copar-benchmarks).
+
+Micro-Benchmarks for internal data structures and routines are available in the
+`bench/` directory and can be executed with `stack bench`.
+
 ## API documentation
 
 The documentation for the internal API can be built and opened in the