feat: add selectable performance history windows

tests/test_validation_harness.py

@@ -1,4 +1,6 @@
 import threading
+import tempfile
+import time
 import unittest
 from pathlib import Path
 from unittest.mock import patch
@@ -229,6 +231,42 @@ class ValidationHarnessTests(unittest.TestCase):
         self.assertIn("historical performance graphs are shown in Operations / Performance below", bundle)
         self.assertIn("setInterval(pollRuntime, 1000)", bundle)
 
+    def test_performance_sample_uses_minute_bucket_and_runtime_values(self):
+        sample = api._performance_sample({
+            "captured_at": 1700000061,
+            "memory_total_bytes": 200,
+            "memory_used_bytes": 100,
+            "swap_total_bytes": 100,
+            "swap_used_bytes": 25,
+            "ollama_model_bytes": 1024 ** 3,
+            "model_memory": [{"name": "model"}],
+            "cpu": {"usage_percent": 12.5, "load_average": [1.25]},
+            "gpu": {"utilization_percent": 40, "gpus": [{"total_bytes": 100, "used_bytes": 50}]},
+            "disk": {"used_percent": 33.3},
+        })
+        self.assertEqual(sample["captured_at"], 1700000040)
+        self.assertEqual(sample["memory_used_percent"], 50.0)
+        self.assertEqual(sample["gpu_vram_used_percent"], 50.0)
+        self.assertEqual(sample["resident_model_count"], 1)
+
+    def test_performance_history_accepts_only_requested_windows(self):
+        for hours in (1, 6, 9, 12, 24):
+            self.assertEqual(api._validate_performance_hours(hours), hours)
+        with self.assertRaises(api.HTTPException) as context:
+            api._validate_performance_hours(2)
+        self.assertEqual(context.exception.status_code, 400)
+
+    def test_performance_history_deduplicates_minute_buckets(self):
+        with tempfile.TemporaryDirectory() as directory, patch.object(api, "_home", return_value=Path(directory)):
+            base = int(time.time()) - 120
+            runtime = {"captured_at": base + 1, "memory_total_bytes": 1, "memory_used_bytes": 1, "cpu": {}, "gpu": {}, "disk": {}, "model_memory": []}
+            first = api._record_performance_sample(runtime)
+            runtime["captured_at"] = base + 2
+            second = api._record_performance_sample(runtime)
+        self.assertEqual(len(first), 1)
+        self.assertEqual(len(second), 1)
+        self.assertEqual(second[0]["captured_at"], ((base + 2) // 60) * 60)
+
 
 if __name__ == "__main__":
     unittest.main()