Add documentation about profiling

README.md

@@ -127,3 +127,21 @@ For the moment you can:
 > **Note**: You can also execute the scripts locally from a `pipenv shell` for instance. You need to make
 sure that you change the way to log to postgres since the access is different from your machine compared to
 from a container.
+
+-----
+
+## Dev tips
+
+#### Profiling code
+
+```python
+from metagenedb.common.utils.profiling import profile
+
+@profile("/my/file/path")
+def my_function(a, b, c):
+    ...
+```
+
+```bash
+snakeviz /my/file/path
+```
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