[jira] [Created] (ARTEMIS-2399) Fix performance degradation when there are a lot of subscribers

["yangwei (JIRA)" <ji...@apache.org>]

yangwei created ARTEMIS-2399:
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             Summary: Fix performance degradation when there are a lot of subscribers
                 Key: ARTEMIS-2399
                 URL: https://issues.apache.org/jira/browse/ARTEMIS-2399
             Project: ActiveMQ Artemis
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 2.9.0
         Environment: broker 2.9.0

cpu: 4 cores, memory: 8G, disk: ssd 500G

broker.xml:

         <thread-pool-max-size>60</thread-pool-max-size>

        <address-setting match="#">
                 <max-size-bytes>51Mb</max-size-bytes>
                 <page-size-bytes>50Mb</page-size-bytes>
                 <page-max-cache-size>1</page-max-cache-size>
                 <address-full-policy>PAGE</address-full-policy>
        </address-setting> 

         <message-expiry-scan-period>-1</message-expiry-scan-period>    
            Reporter: yangwei


We noticed that there was a significant drop in performance when entering page mode in the case of multiple subscribers.

We created a topic and 100 queues bound to it. We ran our _GrinderRunner test_ in our inner test infra cluster with 500 threads producing message and 560 threads, each one picked a random queue to subscribe. The test showed performance is bad: 13000 msg/s sent and 5000 msg/s received.



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