Make sure ACLK synchronization event loop runs frequently (netdata#19446

)

* Process MAX_BATCH_SIZE commands before running the event loop again

* Increase command count
Make sure to exit and run event loop on sync command execution

src/database/sqlite/sqlite_aclk.c

@@ -585,6 +585,8 @@ static void start_alert_push(uv_work_t *req __maybe_unused)
 
 #define MAX_ACLK_BATCH_JOBS_IN_QUEUE (20)
 
+#define MAX_BATCH_SIZE (64)
+
 static void aclk_synchronization(void *arg)
 {
     struct aclk_sync_config_s *config = arg;
@@ -599,6 +601,8 @@ static void aclk_synchronization(void *arg)
     worker_register_job_name(ACLK_QUERY_EXECUTE_SYNC,           "aclk query execute sync");
     worker_register_job_name(ACLK_QUERY_BATCH_EXECUTE,          "aclk batch execute");
     worker_register_job_name(ACLK_QUERY_BATCH_ADD,              "aclk batch add");
+    worker_register_job_name(ACLK_MQTT_WSS_CLIENT,              "config mqtt client");
+    worker_register_job_name(ACLK_DATABASE_NODE_UNREGISTER,     "unregister node");
 
     uv_loop_t *loop = &config->loop;
     fatal_assert(0 == uv_loop_init(loop));
@@ -623,18 +627,24 @@ static void aclk_synchronization(void *arg)
     Pvoid_t *Pvalue;
     struct aclk_query_payload *payload;
 
+    unsigned cmd_batch_size;
     while (likely(service_running(SERVICE_ACLK))) {
         enum aclk_database_opcode opcode;
         worker_is_idle();
         uv_run(loop, UV_RUN_DEFAULT);
 
         /* wait for commands */
+        cmd_batch_size = 0;
         do {
+            if (unlikely(cmd_batch_size >= MAX_BATCH_SIZE))
+                break;
+
             struct aclk_database_cmd cmd = aclk_database_deq_cmd();
 
             if (unlikely(!service_running(SERVICE_ACLK)))
                 break;
 
+            ++cmd_batch_size;
             opcode = cmd.opcode;
 
             if(likely(opcode != ACLK_DATABASE_NOOP && opcode != ACLK_QUERY_EXECUTE))
@@ -723,6 +733,7 @@ static void aclk_synchronization(void *arg)
                         aclk_run_query(config, query, false);
                         freez(payload);
                         config->aclk_queries_running--;
+                        cmd_batch_size = MAX_BATCH_SIZE;
                     }
                     break;