title: Debezium is very slow, how to improve?
body: <p>First time user of Debezium, I get only around 1000 messages per <strong>MINUTE</strong> in debezium ( Which is very slow compared to online benchmark ). No throttling on Kafka connect/ MySQL/ Kafka Broker, not sure what I am doing here. I will post the config here for reference.</p>
  <p>Config of Kafka-Connect Worker:</p>
  <pre><code>-e CONNECT_GROUP_ID=&quot;quickstart&quot; \
  -e CONNECT_CONFIG_STORAGE_TOPIC=&quot;quickstart-config&quot; \
  -e CONNECT_OFFSET_STORAGE_TOPIC=&quot;quickstart-offsets&quot; \
  -e CONNECT_STATUS_STORAGE_TOPIC=&quot;quickstart-status&quot; \
  -e CONNECT_KEY_CONVERTER=&quot;org.apache.kafka.connect.json.JsonConverter&quot; \
  -e CONNECT_VALUE_CONVERTER=&quot;org.apache.kafka.connect.json.JsonConverter&quot; \
  -e CONNECT_INTERNAL_KEY_CONVERTER=&quot;org.apache.kafka.connect.json.JsonConverter&quot; \
  -e CONNECT_INTERNAL_VALUE_CONVERTER=&quot;org.apache.kafka.connect.json.JsonConverter&quot; \
  -e CONNECT_REST_ADVERTISED_HOST_NAME=&quot;localhost&quot; \
  -e CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR=1\
  -e CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR=1\
  -e CONNECT_STATUS_STORAGE_REPLICATION_FACTOR=1\```
  
  
  Config of Kafka Debezium MySQL Connector 
  </code></pre>
  <p>I use all default config for Kafka Debezium MySQL Connector</p>
  <pre><code></code></pre>