Reduce number of scheduled messages for session timeout

application/src/main/java/org/thingsboard/server/actors/device/DeviceActorMessageProcessor.java

@@ -939,7 +939,6 @@ class DeviceActorMessageProcessor extends AbstractContextAwareMsgProcessor {
     }
 
     void init(TbActorCtx ctx) {
-        schedulePeriodicMsgWithDelay(ctx, SessionTimeoutCheckMsg.instance(), systemContext.getSessionReportTimeout(), systemContext.getSessionReportTimeout());
         PageLink pageLink = new PageLink(1024, 0, null, new SortOrder("createdTime"));
         PageData<Rpc> pageData;
         do {

application/src/main/java/org/thingsboard/server/actors/tenant/TenantActor.java

@@ -26,6 +26,7 @@ import org.thingsboard.server.actors.TbActorRef;
 import org.thingsboard.server.actors.TbEntityActorId;
 import org.thingsboard.server.actors.TbEntityTypeActorIdPredicate;
 import org.thingsboard.server.actors.device.DeviceActorCreator;
+import org.thingsboard.server.actors.device.SessionTimeoutCheckMsg;
 import org.thingsboard.server.actors.ruleChain.RuleChainInputMsg;
 import org.thingsboard.server.actors.ruleChain.RuleChainManagerActor;
 import org.thingsboard.server.actors.ruleChain.RuleChainOutputMsg;
@@ -84,6 +85,8 @@ public class TenantActor extends RuleChainManagerActor {
                 cantFindTenant = true;
                 log.info("[{}] Started tenant actor for missing tenant.", tenantId);
             } else {
+                systemContext.schedulePeriodicMsgWithDelay(ctx, SessionTimeoutCheckMsg.instance(), systemContext.getSessionReportTimeout(), systemContext.getSessionReportTimeout());
+
                 apiUsageState = new ApiUsageState(systemContext.getApiUsageStateService().getApiUsageState(tenant.getId()));
 
                 // This Service may be started for specific tenant only.
@@ -170,6 +173,9 @@ public class TenantActor extends RuleChainManagerActor {
             case REMOVE_RPC_TO_DEVICE_ACTOR_MSG:
                 onToDeviceActorMsg((DeviceAwareMsg) msg, true);
                 break;
+            case SESSION_TIMEOUT_MSG:
+                broadcastToAllDeviceActors(msg);
+                break;
             case RULE_CHAIN_INPUT_MSG:
             case RULE_CHAIN_OUTPUT_MSG:
             case RULE_CHAIN_TO_RULE_CHAIN_MSG:
@@ -184,6 +190,11 @@ public class TenantActor extends RuleChainManagerActor {
         return true;
     }
 
+    private void broadcastToAllDeviceActors(TbActorMsg msg) {
+        ctx.broadcastToChildren(msg, actorId -> actorId instanceof TbEntityActorId
+                && EntityType.DEVICE.equals(((TbEntityActorId) actorId).getEntityId().getEntityType()));
+    }
+
     private boolean isMyPartition(EntityId entityId) {
         return systemContext.resolve(ServiceType.TB_CORE, tenantId, entityId).isMyPartition();
     }