diff --git a/examples/metrics.py b/examples/metrics.py
index ef31a227..74fb59b7 100644
--- a/examples/metrics.py
+++ b/examples/metrics.py
@@ -1,11 +1,11 @@
-""" Server metrics upload.
-"""
+"""Server metrics upload."""
+# -*- coding: utf-8 -*-
 
 import asyncio
 import os
 import platform
 import time
-from typing import Tuple
+from typing import Tuple, Any, Dict
 
 import psutil
 from aleph_message.models import AlephMessage
@@ -15,28 +15,25 @@
 from aleph.sdk.client import AuthenticatedAlephHttpClient
 from aleph.sdk.conf import settings
 
-# -*- coding: utf-8 -*-
-
 
-def get_sysinfo():
+def get_sysinfo() -> Dict[str, Any]:
     uptime = int(time.time() - psutil.boot_time())
-    sysinfo = {
+    load_avg = os.getloadavg() if hasattr(os, "getloadavg") else (0.0, 0.0, 0.0)
+    return {
         "uptime": uptime,
         "os": platform.platform(),
-        "load_avg": os.getloadavg(),
+        "load_avg": load_avg,
         "num_cpus": psutil.cpu_count(),
     }
 
-    return sysinfo
-
 
-def get_memory():
+def get_memory() -> Dict[str, Any]:
     return psutil.virtual_memory()._asdict()
 
 
-def get_swap_space():
+def get_swap_space() -> Dict[str, Any]:
     sm = psutil.swap_memory()
-    swap = {
+    return {
         "total": sm.total,
         "free": sm.free,
         "used": sm.used,
@@ -44,27 +41,30 @@ def get_swap_space():
         "swapped_in": sm.sin,
         "swapped_out": sm.sout,
     }
-    return swap
 
 
-def get_cpu():
-    return psutil.cpu_times_percent(0)._asdict()
+def get_cpu() -> Dict[str, Any]:
+    # interval=0 for non-blocking “since last call” percentages
+    return psutil.cpu_times_percent(interval=0)._asdict()
 
 
-def get_cpu_cores():
-    return [c._asdict() for c in psutil.cpu_times_percent(0, percpu=True)]
+def get_cpu_cores() -> list[Dict[str, Any]]:
+    return [c._asdict() for c in psutil.cpu_times_percent(interval=0, percpu=True)]
 
 
 async def send_metrics(
-    session: AuthenticatedAlephHttpClient, metrics
+    session: AuthenticatedAlephHttpClient, metrics: Dict[str, Any]
 ) -> Tuple[AlephMessage, MessageStatus]:
     return await session.create_aggregate(
-        key="metrics", content=metrics, channel="SYSINFO"
+        key="metrics",
+        content=metrics,
+        channel="SYSINFO",
     )
 
 
-def collect_metrics():
+def collect_metrics() -> Dict[str, Any]:
     return {
+        "sysinfo": get_sysinfo(),
         "memory": get_memory(),
         "swap": get_swap_space(),
         "cpu": get_cpu(),
@@ -72,16 +72,23 @@ def collect_metrics():
     }
 
 
-async def main():
+async def main() -> None:
     account = get_fallback_account()
     async with AuthenticatedAlephHttpClient(
         account=account, api_server=settings.API_HOST
     ) as session:
-        while True:
-            metrics = collect_metrics()
-            message, status = await send_metrics(session, metrics)
-            print("sent", message.item_hash)
-            time.sleep(10)
+        try:
+            while True:
+                metrics = collect_metrics()
+                message, status = await send_metrics(session, metrics)
+                print("sent", message.item_hash, status.value if hasattr(status, "value") else status)
+                # Use non-blocking sleep in async context
+                await asyncio.sleep(10)
+        except asyncio.CancelledError:
+            # Graceful shutdown
+            pass
+        except KeyboardInterrupt:
+            pass
 
 
 if __name__ == "__main__":