diff --git a/msa/js-executor/api/jsInvokeMessageProcessor.js b/msa/js-executor/api/jsInvokeMessageProcessor.js
index 867dd82b39..dec935c8ad 100644
--- a/msa/js-executor/api/jsInvokeMessageProcessor.js
+++ b/msa/js-executor/api/jsInvokeMessageProcessor.js
@@ -25,6 +25,7 @@ const config = require('config'),
       Utils = require('./utils'),
       JsExecutor = require('./jsExecutor');
 
+const statFrequency = Number(config.get('script.stat_print_frequency'));
 const scriptBodyTraceFrequency = Number(config.get('script.script_body_trace_frequency'));
 const useSandbox = config.get('script.use_sandbox') === 'true';
 const maxActiveScripts = Number(config.get('script.max_active_scripts'));
@@ -39,6 +40,7 @@ function JsInvokeMessageProcessor(producer) {
     this.scriptMap = new Map();
     this.scriptIds = [];
     this.executedScriptsCounter = 0;
+    this.lastStatTime = performance.now();
 }
 
 JsInvokeMessageProcessor.prototype.onJsInvokeMessage = function(message) {
@@ -118,11 +120,16 @@ JsInvokeMessageProcessor.prototype.processInvokeRequest = function(requestId, re
     var scriptId = getScriptId(invokeRequest);
     logger.debug('[%s] Processing invoke request, scriptId: [%s]', requestId, scriptId);
     this.executedScriptsCounter++;
-    if ( this.executedScriptsCounter >= scriptBodyTraceFrequency ) {
-        this.executedScriptsCounter = 0;
-        if (logger.levels[logger.level] >= logger.levels['debug']) {
-            logger.debug('[%s] Executing script body: [%s]', scriptId, invokeRequest.scriptBody);
-        }
+    if (this.executedScriptsCounter % statFrequency == 0) {
+        var nowMs = performance.now();
+        var msSinceLastStat = nowMs - this.lastStatTime;
+        var requestsPerSec = statFrequency / msSinceLastStat * 1000; //msSinceLastStat can't be zero in the real world
+        this.lastStatTime = nowMs;
+        logger.info('STAT[%s]: requests [%s], took [%s]ms, request/s [%s]', this.executedScriptsCounter, statFrequency, msSinceLastStat, requestsPerSec);
+    }
+
+    if (this.executedScriptsCounter % scriptBodyTraceFrequency == 0) {
+        logger.info('[%s] Executing script body: [%s]', scriptId, invokeRequest.scriptBody);
     }
     this.getOrCompileScript(scriptId, invokeRequest.scriptBody).then(
         (script) => {
diff --git a/msa/js-executor/config/custom-environment-variables.yml b/msa/js-executor/config/custom-environment-variables.yml
index 5e2bfe8342..c5eb15e8b9 100644
--- a/msa/js-executor/config/custom-environment-variables.yml
+++ b/msa/js-executor/config/custom-environment-variables.yml
@@ -26,6 +26,8 @@ kafka:
     servers: "TB_KAFKA_SERVERS"
   replication_factor: "TB_QUEUE_KAFKA_REPLICATION_FACTOR"
   acks: "TB_KAFKA_ACKS" # -1 = all; 0 = no acknowledgments; 1 = only waits for the leader to acknowledge
+  batch_size: "${TB_KAFKA_BATCH_SIZE:128}" # for producer
+  linger_ms: "${TB_KAFKA_LINGER_MS:1}" # for producer
   requestTimeout: "TB_QUEUE_KAFKA_REQUEST_TIMEOUT_MS"
   compression: "TB_QUEUE_KAFKA_COMPRESSION" # gzip or uncompressed
   topic_properties: "TB_QUEUE_KAFKA_JE_TOPIC_PROPERTIES"
@@ -70,6 +72,7 @@ logger:
 
 script:
   use_sandbox: "SCRIPT_USE_SANDBOX"
+  stat_print_frequency: "SCRIPT_STAT_PRINT_FREQUENCY"
   script_body_trace_frequency: "SCRIPT_BODY_TRACE_FREQUENCY"
   max_active_scripts: "MAX_ACTIVE_SCRIPTS"
   slow_query_log_ms: "SLOW_QUERY_LOG_MS" #1.123456
diff --git a/msa/js-executor/config/default.yml b/msa/js-executor/config/default.yml
index cdf5b35421..5a2c47a675 100644
--- a/msa/js-executor/config/default.yml
+++ b/msa/js-executor/config/default.yml
@@ -26,6 +26,8 @@ kafka:
     servers: "localhost:9092"
   replication_factor: "1"
   acks: "1" # -1 = all; 0 = no acknowledgments; 1 = only waits for the leader to acknowledge
+  batch_size: "128" # for producer
+  linger_ms: "1" # for producer
   requestTimeout: "30000" # The default value in kafkajs is: 30000
   compression: "gzip" # gzip or uncompressed
   topic_properties: "retention.ms:604800000;segment.bytes:26214400;retention.bytes:104857600;partitions:100;min.insync.replicas:1"
@@ -59,7 +61,8 @@ logger:
 
 script:
   use_sandbox: "true"
-  script_body_trace_frequency: "1000"
+  script_body_trace_frequency: "10000"
+  stat_print_frequency: "10000"
   max_active_scripts: "1000"
-  slow_query_log_ms: "1.000000" #millis
+  slow_query_log_ms: "5.000000" #millis
   slow_query_log_body: "false"
diff --git a/msa/js-executor/queue/kafkaTemplate.js b/msa/js-executor/queue/kafkaTemplate.js
index a061215b28..79d87c17b4 100644
--- a/msa/js-executor/queue/kafkaTemplate.js
+++ b/msa/js-executor/queue/kafkaTemplate.js
@@ -23,12 +23,11 @@ const replicationFactor = Number(config.get('kafka.replication_factor'));
 const topicProperties = config.get('kafka.topic_properties');
 const kafkaClientId = config.get('kafka.client_id');
 const acks = Number(config.get('kafka.acks'));
+const maxBatchSize = Number(config.get('kafka.batch_size'));
+const linger = Number(config.get('kafka.linger_ms'));
 const requestTimeout = Number(config.get('kafka.requestTimeout'));
 const compressionType = (config.get('kafka.requestTimeout') === "gzip") ? CompressionTypes.GZIP : CompressionTypes.None;
 
-const linger = 5; //milliseconds //TODO move to the config
-const maxBatchSize = 10; //max messages in batch //TODO move to the config
-
 let kafkaClient;
 let kafkaAdmin;
 let consumer;
@@ -76,7 +75,9 @@ function sendLoopWithLinger() {
 
 function sendMessagesAsBatch() {
      if (batchMessages.length > 0) {
-        logger.info('sendMessagesAsBatch, lenght: [%s]', batchMessages.length );
+         if (batchMessages.length > 1) {
+            logger.info('sendMessagesAsBatch, length: [%s]', batchMessages.length);
+         }
          const messagesToSend = batchMessages;
          batchMessages = [];
          producer.sendBatch({
@@ -85,17 +86,15 @@ function sendMessagesAsBatch() {
              compression: compressionType
          }).then(
                 () => {
-                    logger.info('Response sent to kafka, length: [%s]', messagesToSend.length );
+                    logger.debug('Response sent to kafka, length: [%s]', messagesToSend.length);
                 },
                 (err) => {
-                    logger.error('Failed to send kafka, length: [%s], pending to reprocess msgs', messagesToSend.length );
+                    logger.error('Failed to send kafka, length: [%s], pending to reprocess msgs', messagesToSend.length);
                     batchMessages = messagesToSend.concat(batchMessages);
                     logger.error(err.stack);
                 }
          );
 
-     } else {
-        //logger.debug("nothing to send");
      }
 }
 
@@ -163,6 +162,8 @@ function sendMessagesAsBatch() {
         consumer = kafkaClient.consumer({groupId: 'js-executor-group'});
         producer = kafkaClient.producer();
 
+/*
+        //producer event instrumentation to debug
         const { CONNECT } = producer.events;
         const removeListenerC = producer.on(CONNECT, e => logger.info(`producer CONNECT`));
         const { DISCONNECT } = producer.events;
@@ -173,18 +174,22 @@ function sendMessagesAsBatch() {
         const removeListenerRT = producer.on(REQUEST_TIMEOUT, e => logger.info(`producer REQUEST_TIMEOUT ${e.payload.broker}`));
         const { REQUEST_QUEUE_SIZE } = producer.events;
         const removeListenerRQS = producer.on(REQUEST_QUEUE_SIZE, e => logger.info(`producer REQUEST_QUEUE_SIZE ${e.payload.broker} size ${e.queueSize}`));
+*/
 
-//        const removeListeners = {}
-//        const { FETCH_START } = consumer.events;
-//        removeListeners[FETCH_START] = consumer.on(FETCH_START, e => logger.info(`consumer FETCH_START`));
-//        const { FETCH } = consumer.events;
-//        removeListeners[FETCH] = consumer.on(FETCH, e => logger.info(`consumer FETCH numberOfBatches ${e.payload.numberOfBatches} duration ${e.payload.duration}`));
-//        const { START_BATCH_PROCESS } = consumer.events;
-//        removeListeners[START_BATCH_PROCESS] = consumer.on(START_BATCH_PROCESS, e => logger.info(`consumer START_BATCH_PROCESS topic ${e.payload.topic} batchSize ${e.payload.batchSize}`));
-//        const { END_BATCH_PROCESS } = consumer.events;
-//        removeListeners[END_BATCH_PROCESS] = consumer.on(END_BATCH_PROCESS, e => logger.info(`consumer END_BATCH_PROCESS topic ${e.payload.topic} batchSize ${e.payload.batchSize}`));
-//        const { COMMIT_OFFSETS } = consumer.events;
-//        removeListeners[COMMIT_OFFSETS] = consumer.on(COMMIT_OFFSETS, e => logger.info(`consumer COMMIT_OFFSETS topics ${e.payload.topics}`));
+/*
+        //consumer event instrumentation to debug
+        const removeListeners = {}
+        const { FETCH_START } = consumer.events;
+        removeListeners[FETCH_START] = consumer.on(FETCH_START, e => logger.info(`consumer FETCH_START`));
+        const { FETCH } = consumer.events;
+        removeListeners[FETCH] = consumer.on(FETCH, e => logger.info(`consumer FETCH numberOfBatches ${e.payload.numberOfBatches} duration ${e.payload.duration}`));
+        const { START_BATCH_PROCESS } = consumer.events;
+        removeListeners[START_BATCH_PROCESS] = consumer.on(START_BATCH_PROCESS, e => logger.info(`consumer START_BATCH_PROCESS topic ${e.payload.topic} batchSize ${e.payload.batchSize}`));
+        const { END_BATCH_PROCESS } = consumer.events;
+        removeListeners[END_BATCH_PROCESS] = consumer.on(END_BATCH_PROCESS, e => logger.info(`consumer END_BATCH_PROCESS topic ${e.payload.topic} batchSize ${e.payload.batchSize}`));
+        const { COMMIT_OFFSETS } = consumer.events;
+        removeListeners[COMMIT_OFFSETS] = consumer.on(COMMIT_OFFSETS, e => logger.info(`consumer COMMIT_OFFSETS topics ${e.payload.topics}`));
+*/
 
         const messageProcessor = new JsInvokeMessageProcessor(new KafkaProducer());
         await consumer.connect();