[docker-orchagent] add -R flag for ring mode in orchagent.sh

dockers/docker-orchagent/orchagent.sh

@@ -111,4 +111,10 @@ if [[ x"${MGMT_VRF_ENABLED}" == x"true" ]]; then
     ORCHAGENT_ARGS+=" -v mgmt"
 fi
 
+# Enable ring buffer
+ORCHDAEMON_RING_ENABLED=`sonic-db-cli CONFIG_DB hget "DEVICE_METADATA|localhost" "ring_thread_enabled"`
+if [[ x"${ORCHDAEMON_RING_ENABLED}" == x"true" ]]; then
+    ORCHAGENT_ARGS+=" -R"
+fi
+
 exec /usr/bin/orchagent ${ORCHAGENT_ARGS}

platform/vs/docker-sonic-vs/orchagent.sh

@@ -46,6 +46,12 @@ if [ "$SYNC_MODE" == "enable" ]; then
     ORCHAGENT_ARGS+="-s "
 fi
 
+# Enable ring buffer
+ORCHDAEMON_RING_ENABLED=`sonic-db-cli CONFIG_DB hget "DEVICE_METADATA|localhost" "ring_thread_enabled"`
+if [[ x"${ORCHDAEMON_RING_ENABLED}" == x"true" ]]; then
+    ORCHAGENT_ARGS+="-R "
+fi
+
 # Set mac address
 ORCHAGENT_ARGS+="-m $MAC_ADDRESS"
 

src/sonic-yang-models/tests/yang_model_tests/tests_config/device_metadata.json

@@ -545,5 +545,14 @@
                 }
             }
         }
+    },
+    "DEVICE_METADATA_RING_THREAD_ENABLED": {
+        "sonic-device_metadata:sonic-device_metadata": {
+            "sonic-device_metadata:DEVICE_METADATA": {
+                "sonic-device_metadata:localhost": {
+                    "ring_thread_enabled": true
+                }
+            }
+        }
     }
 }

src/sonic-yang-models/yang-models/sonic-device_metadata.yang

@@ -279,6 +279,12 @@ module sonic-device_metadata {
                     default disabled;
                 }
 
+                leaf ring_thread_enabled {
+                    type boolean;
+                    description "Enable gRingMode of OrchDaemon, which would set up its ring thread to accelerate task execution.";
+                    default "false";
+                }
+
             }
             /* end of container localhost */
         }