Reduce Ray / RLlib startup messages (#5368)

python/ray/tune/log_sync.py

@@ -31,7 +31,7 @@ def log_sync_template():
     ssh_key = get_ssh_key()
     if ssh_key is None:
         if not _log_sync_warned:
-            logger.error("Log sync requires cluster to be setup with "
+            logger.debug("Log sync requires cluster to be setup with "
                          "`ray up`.")
             _log_sync_warned = True
         return

python/ray/tune/trial_runner.py

@@ -173,7 +173,7 @@ class TrialRunner(object):
                 logger.exception(
                     "Runner restore failed. Restarting experiment.")
         else:
-            logger.info("Starting a new experiment.")
+            logger.debug("Starting a new experiment.")
 
         self._start_time = time.time()
         self._last_checkpoint_time = -float("inf")

python/ray/tune/util.py

@@ -29,6 +29,7 @@ except ImportError:
 
 _pinned_objects = []
 PINNED_OBJECT_PREFIX = "ray.tune.PinnedObject:"
+START_OF_TIME = time.time()
 
 
 class UtilMonitor(Thread):
@@ -139,7 +140,7 @@ class warn_if_slow(object):
 
     def __exit__(self, type, value, traceback):
         now = time.time()
-        if now - self.start > 0.1:
+        if now - self.start > 0.1 and now - START_OF_TIME > 60.0:
             logger.warning("The `{}` operation took {} seconds to complete, ".
                            format(self.name, now - self.start) +
                            "which may be a performance bottleneck.")