diff --git a/core/rule_updater.py b/core/rule_updater.py
index c34c8fc..431bd7c 100644
--- a/core/rule_updater.py
+++ b/core/rule_updater.py
@@ -148,7 +148,8 @@ def save_config(self, rule_manager: RuleManager) -> None:
         YAMLRuleEngineConfigProducer.to_yaml(self.config_path, rule_manager)
 
     @staticmethod
-    def to_yaml(file_path: str, rule_manager: RuleManager):
+    def to_yaml(file_path: Union[str, Path], rule_manager: RuleManager):
+        file_path = str(file_path)
         open_fn = open
         if file_path.startswith("s3://"):
             import s3fs
diff --git a/load-testing/generate_input.py b/load-testing/generate_input.py
new file mode 100644
index 0000000..db6ebb9
--- /dev/null
+++ b/load-testing/generate_input.py
@@ -0,0 +1,58 @@
+import argparse
+import random
+from random import randint
+from core.rule import Rule
+from core.rule_engine import RuleEngine
+from core.rule_updater import RuleEngineConfigProducer, FSRuleManager
+import json
+from pathlib import Path
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--num-params", help="Number of attributes input facts have", default=100
+    )
+    parser.add_argument("--num-rules", help="Number of rules to test", default=200)
+    parser.add_argument("--num-facts", help="Number of facts to test", default=1000)
+    args = parser.parse_args()
+    num_params = args.num_params
+    num_rules = args.num_rules
+    num_facts = args.num_facts
+    output_path = Path("/Users/sofeikov")
+
+    all_facts = []
+    for f in range(num_facts):
+        new_fact = {f"param_{i}": random.randint(1, 5) for i in range(num_params + 1)}
+        all_facts.append(new_fact)
+    with open(output_path / "facts.json", "w+") as f:
+        json.dump(all_facts, f)
+    print(all_facts)
+
+    rules = []
+    manager = FSRuleManager(output_path / "rules_load_test")
+    for rct in range(num_rules):
+        rule_code = []
+        num_checks = random.randint(1, num_params)
+        checks = []
+        for i in range(num_checks):
+            checks.append(f"$param_{randint(0, num_params)} == {randint(1, 5)}")
+        checks = "if " + " and ".join(checks) + ":"
+        rule_code.append(checks)
+        rule_code.append("\treturn 'HOLD'")
+        rule_code.append("return 'RELEASE'")
+        rule_code = "\n".join(rule_code)
+        rule = Rule(rid=f"rule_{rct}", logic=rule_code)
+        rules.append(rule)
+        manager.save_rule(rule)
+        print(rule)
+    # rule_engine = RuleEngine(rules=rules)
+    RuleEngineConfigProducer.to_yaml(output_path / "rules.yaml", manager)
+    import time
+
+    tic = time.time()
+    re = RuleEngine(rules=rules)
+    for f in all_facts:
+        re(f)
+
+    toc = time.time()
+    print(f"Time taken: {toc - tic} for {num_rules} rules, {num_facts} facts")