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https://issues.apache.org/jira/browse/ARTEMIS-2399?focusedWorklogId=288790&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-288790
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ASF GitHub Bot logged work on ARTEMIS-2399:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Aug/19 08:32
            Start Date: 05/Aug/19 08:32
    Worklog Time Spent: 10m 
      Work Description: wy96f commented on issue #2750: ARTEMIS-2399 Improve 
performance when there are a lot of subscribers
URL: https://github.com/apache/activemq-artemis/pull/2750#issuecomment-518139732
 
 
   @franz1981 In our test consumers were falling behind producers all the time. 
I saw ~80GB page files left after test lasting 1 hour.
   
   I'm not sure whether it's related to this pr. Considering 10GB page data 
produced, it's possible the pages are constantly dropping in an out while 
consumers are cathing up, resulting in performance drop.  Could you try this pr 
to check it? :)
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 288790)
    Time Spent: 16h  (was: 15h 50m)

> Improve performance 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
>            Priority: Major
>          Time Spent: 16h
>  Remaining Estimate: 0h
>
> 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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