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https://issues.apache.org/jira/browse/ARTEMIS-2399?focusedWorklogId=277319&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-277319
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ASF GitHub Bot logged work on ARTEMIS-2399:
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Author: ASF GitHub Bot
Created on: 16/Jul/19 08:31
Start Date: 16/Jul/19 08:31
Worklog Time Spent: 10m
Work Description: franz1981 commented on pull request #2750: ARTEMIS-2399
Improve performance when there are a lot of subscribers
URL: https://github.com/apache/activemq-artemis/pull/2750#discussion_r303785677
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File path:
tests/smoke-tests/src/test/java/org/apache/activemq/artemis/tests/smoke/jmx/JmxConnectionTest.java
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@@ -27,8 +27,8 @@
import java.rmi.server.RemoteRef;
import io.netty.util.internal.PlatformDependent;
-import io.netty.util.internal.shaded.org.jctools.util.UnsafeAccess;
import org.apache.activemq.artemis.tests.smoke.common.SmokeTestBase;
+import org.jctools.util.UnsafeAccess;
Review comment:
We are working on a VarHandle version and we already allows different
AtomicXXX versions to be used (with a small perf drop): probably java 12 is
fine too, but I haven't tested it personally...
The problem will be when some Unsafe specific methods will be scattered
around VarHandle/Other classes and will be officially deleted from Unsafe...
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Issue Time Tracking
-------------------
Worklog Id: (was: 277319)
Time Spent: 9h 50m (was: 9h 40m)
> 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: 9h 50m
> 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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