Reduce system metrics logging frequency (#3604)

composer/loggers/mlflow_logger.py

@@ -174,9 +174,9 @@ def __init__(
 
         if log_system_metrics:
             # Set system metrics sampling interval and samples before logging so that system metrics
-            # are collected every 5s, and aggregated over 3 samples before being logged
-            # (logging per 15s).
-            mlflow.set_system_metrics_samples_before_logging(3)
+            # are collected every 5s, and aggregated over 6 samples before being logged
+            # (logging per 30s).
+            mlflow.set_system_metrics_samples_before_logging(6)
             mlflow.set_system_metrics_sampling_interval(5)
 
         self._rank_zero_only = rank_zero_only
@@ -545,7 +545,11 @@ def register_model_with_run_id(
         """
         if self._enabled:
             from mlflow.exceptions import MlflowException
-            from mlflow.protos.databricks_pb2 import ALREADY_EXISTS, RESOURCE_ALREADY_EXISTS, ErrorCode
+            from mlflow.protos.databricks_pb2 import (
+                ALREADY_EXISTS,
+                RESOURCE_ALREADY_EXISTS,
+                ErrorCode,
+            )
 
             full_name = f'{self.model_registry_prefix}.{name}' if len(self.model_registry_prefix) > 0 else name