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https://issues.apache.org/activemq/browse/AMQ-2333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=53031#action_53031
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Gary Tully commented on AMQ-2333:
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investigate turning off producer flow control and increasing the memory
available to the broker through the systemUsage config.
> Active MQ performance issues when there are more than 100 queue'd up messages
> -----------------------------------------------------------------------------
>
> Key: AMQ-2333
> URL: https://issues.apache.org/activemq/browse/AMQ-2333
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker, JMS client
> Affects Versions: 5.2.0
> Reporter: Marcus Malcom
> Priority: Critical
>
> Over the past couple of days some of our queues get rather full because of
> downstream problems. The messages start numbering in the 1000's. When that
> happens ActiveMQ slows way down. I believe is slows down because we are
> trying to produce a message to the overloaded queue and it's taking a long
> time (minutes instead of seconds). Once the overloaded queue is emptied the
> problems go away.
> Our system pretty much has all the defaults.
> Note: this was not a problem before upgrading to 5.2.0
> Any ideas on what should be done?
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