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https://issues.apache.org/jira/browse/ARTEMIS-2399?focusedWorklogId=265783&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-265783
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ASF GitHub Bot logged work on ARTEMIS-2399:
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Author: ASF GitHub Bot
Created on: 24/Jun/19 16:14
Start Date: 24/Jun/19 16:14
Worklog Time Spent: 10m
Work Description: franz1981 commented on issue #2730: ARTEMIS-2399 Fix
performance degradation when there are a lot of subscribers
URL: https://github.com/apache/activemq-artemis/pull/2730#issuecomment-505077972
@wy96f 5000 msg/sec seems to me too similar to the default value for
page-max-concurrent-io ie "The max number of concurrent reads allowed on
paging. Default=5"
Could you check the results again by increasing the default to the total
number of consumers?
To avoid being backpressured by the `Semaphore` when the pages are being
evicted?
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Issue Time Tracking
-------------------
Worklog Id: (was: 265783)
Time Spent: 40m (was: 0.5h)
> 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
> Priority: Major
> Time Spent: 40m
> 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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