don't healthcheck endpoints until model is loaded and benchmarks have run

lib/backend.py

@@ -60,6 +60,7 @@ class Backend:
         self.metrics = Metrics()
         self._total_pubkey_fetch_errors = 0
         self._pubkey = self._fetch_pubkey()
+        self.__start_healthcheck: bool = False
 
     @property
     def pubkey(self) -> Optional[RSA.RsaKey]:
@@ -191,7 +192,10 @@ class Backend:
         if health_check_url is None:
             log.debug("No healthcheck endpoint defined, skipping healthcheck")
             return
-        await sleep(5)
+        while True:
+            await sleep(10)
+            if self.__start_healthcheck is False:
+                continue
             try:
                 log.debug(f"Performing healthcheck on {health_check_url}")
                 async with self.session.get(health_check_url) as response:
@@ -331,6 +335,7 @@ class Backend:
                         await sleep(5)
                         try:
                             max_throughput = await run_benchmark()
+                            self.__start_healthcheck = True
                             self.metrics._model_loaded(
                                 max_throughput=max_throughput,
                             )