diff --git a/config/main.py b/config/main.py
index 029a8b5d68..ed10e7f17e 100644
--- a/config/main.py
+++ b/config/main.py
@@ -744,24 +744,28 @@ def storm_control_delete_entry(port_name, storm_type):
     return True
 
 
-def _wait_until_clear(table, interval=0.5, timeout=30):
+def _wait_until_clear(tables, interval=0.5, timeout=30, verbose=False):
     start = time.time()
     empty = False
     app_db = SonicV2Connector(host='127.0.0.1')
     app_db.connect(app_db.APPL_DB)
 
     while not empty and time.time() - start < timeout:
-        current_profiles = app_db.keys(app_db.APPL_DB, table)
-        if not current_profiles:
-            empty = True
-        else:
-            time.sleep(interval)
+        non_empty_table_count = 0
+        for table in tables:
+            keys = app_db.keys(app_db.APPL_DB, table)
+            if keys:
+                non_empty_table_count += 1
+                if verbose:
+                    click.echo("Some entries matching {} still exist: {}".format(table, keys[0]))
+                time.sleep(interval)
+        empty = (non_empty_table_count == 0)
     if not empty:
         click.echo("Operation not completed successfully, please save and reload configuration.")
     return empty
 
 
-def _clear_qos(delay = False):
+def _clear_qos(delay=False, verbose=False):
     QOS_TABLE_NAMES = [
             'PORT_QOS_MAP',
             'QUEUE',
@@ -798,7 +802,10 @@ def _clear_qos(delay = False):
         for qos_table in QOS_TABLE_NAMES:
             config_db.delete_table(qos_table)
     if delay:
-        _wait_until_clear("BUFFER_POOL_TABLE:*",interval=0.5, timeout=30)
+        device_metadata = config_db.get_entry('DEVICE_METADATA', 'localhost')
+        # Traditional buffer manager do not remove buffer tables in any case, no need to wait.
+        timeout = 120 if device_metadata and device_metadata.get('buffer_model') == 'dynamic' else 0
+        _wait_until_clear(["BUFFER_*_TABLE:*", "BUFFER_*_SET"], interval=0.5, timeout=timeout, verbose=verbose)
 
 def _get_sonic_generated_services(num_asic):
     if not os.path.isfile(SONIC_GENERATED_SERVICE_PATH):
@@ -2645,10 +2652,11 @@ def qos(ctx):
     pass
 
 @qos.command('clear')
-def clear():
+@click.option('--verbose', is_flag=True, help="Enable verbose output")
+def clear(verbose):
     """Clear QoS configuration"""
     log.log_info("'qos clear' executing...")
-    _clear_qos()
+    _clear_qos(verbose=verbose)
 
 def _update_buffer_calculation_model(config_db, model):
     """Update the buffer calculation model into CONFIG_DB"""
@@ -2665,6 +2673,7 @@ def _update_buffer_calculation_model(config_db, model):
 @click.option('--ports', is_flag=False, required=False, help="List of ports that needs to be updated")
 @click.option('--no-dynamic-buffer', is_flag=True, help="Disable dynamic buffer calculation")
 @click.option('--no-delay', is_flag=True, hidden=True)
+@click.option('--verbose', is_flag=True, help="Enable verbose output")
 @click.option(
     '--json-data', type=click.STRING,
     help="json string with additional data, valid with --dry-run option"
@@ -2673,7 +2682,7 @@ def _update_buffer_calculation_model(config_db, model):
     '--dry_run', type=click.STRING,
     help="Dry run, writes config to the given file"
 )
-def reload(ctx, no_dynamic_buffer, no_delay, dry_run, json_data, ports):
+def reload(ctx, no_dynamic_buffer, no_delay, dry_run, json_data, ports, verbose):
     """Reload QoS configuration"""
     if ports:
         log.log_info("'qos reload --ports {}' executing...".format(ports))
@@ -2682,7 +2691,7 @@ def reload(ctx, no_dynamic_buffer, no_delay, dry_run, json_data, ports):
 
     log.log_info("'qos reload' executing...")
     if not dry_run:
-        _clear_qos(delay = not no_delay)
+        _clear_qos(delay = not no_delay, verbose=verbose)
 
     _, hwsku_path = device_info.get_paths_to_platform_and_hwsku_dirs()
     sonic_version_file = device_info.get_sonic_version_file()
diff --git a/tests/config_test.py b/tests/config_test.py
index b811c5de79..1790ce247d 100644
--- a/tests/config_test.py
+++ b/tests/config_test.py
@@ -694,7 +694,7 @@ def test_qos_wait_until_clear_empty(self):
 
         with mock.patch('swsscommon.swsscommon.SonicV2Connector.keys',  side_effect=TestConfigQos._keys):
             TestConfigQos._keys_counter = 1
-            empty = _wait_until_clear("BUFFER_POOL_TABLE:*", 0.5,2)
+            empty = _wait_until_clear(["BUFFER_POOL_TABLE:*"], 0.5,2)
         assert empty
 
     def test_qos_wait_until_clear_not_empty(self):
@@ -702,9 +702,15 @@ def test_qos_wait_until_clear_not_empty(self):
 
         with mock.patch('swsscommon.swsscommon.SonicV2Connector.keys', side_effect=TestConfigQos._keys):
             TestConfigQos._keys_counter = 10
-            empty = _wait_until_clear("BUFFER_POOL_TABLE:*", 0.5,2)
+            empty = _wait_until_clear(["BUFFER_POOL_TABLE:*"], 0.5,2)
         assert not empty
 
+    @mock.patch('config.main._wait_until_clear')
+    def test_qos_clear_no_wait(self, _wait_until_clear):
+        from config.main import _clear_qos
+        _clear_qos(True, False)
+        _wait_until_clear.assert_called_with(['BUFFER_*_TABLE:*', 'BUFFER_*_SET'], interval=0.5, timeout=0, verbose=False)
+
     def test_qos_reload_single(
             self, get_cmd_module, setup_qos_mock_apis,
             setup_single_broadcom_asic