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Posted to issues@activemq.apache.org by "Francesco Nigro (JIRA)" <ji...@apache.org> on 2018/07/31 09:02:00 UTC

[jira] [Created] (ARTEMIS-1999) Broker is using 100% core's CPU time if message grouping is used

Francesco Nigro created ARTEMIS-1999:
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             Summary: Broker is using 100% core's CPU time if message grouping is used
                 Key: ARTEMIS-1999
                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1999
             Project: ActiveMQ Artemis
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 2.6.2
            Reporter: Francesco Nigro
            Assignee: Francesco Nigro
             Fix For: 2.6.3


When consuming messages with message grouping set on the broker seem to consume excessive amount of CPU time. On 12 core CPU it can be observed that one core goes 100% and stays that way as long as there is more than one consumer attached to a queue. Once the number of consumers is reduced to 1 the CPU usage goes to normal. But moment another consumer is attached another CPU core goes 100%.
 



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