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From Franco Ng <>
Subject ActiveMQ cannot handle too many topic with redeliveryPlugin
Date Thu, 02 May 2019 01:51:12 GMT
Our market data would publish over 20,000 msg/s within 30,000 topics,
redeliveryPlugin and socketBufferSize, however, ActiveMQ seems unable to
handle this volume that CPU usage % is 50% and cannot publish any message to
subscriber(s) after certain starting time.  Even, I stop the market data
publishing, the CPU usage of ActiveMQ broker is still eat up 50%, cannot
drop for a long time and NO error/warning log recorded in activemq.log.

When I remove redeliveryPlugin and socketBufferSize from Broker
(activemq.xml), it resume normal.

Please help to solve.  Also, how to show redelivery message in log when
occur, thanks.

Activemq.xml (part)

<redeliveryPlugin fallbackToDeadLetter="true"
<redeliveryPolicy useCollisionAvoidance="true" maximumRedeliveries="1"
initialRedeliveryDelay="1000" redeliveryDelay="1000"/>


<transportConnector name="openwire"

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