[
https://issues.apache.org/jira/browse/ARTEMIS-2399?focusedWorklogId=277330&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-277330
]
ASF GitHub Bot logged work on ARTEMIS-2399:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 16/Jul/19 08:47
Start Date: 16/Jul/19 08:47
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_r303792800
##########
File path:
artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/QueueImpl.java
##########
@@ -324,13 +325,7 @@ public String debug() {
out.println("consumer: " + holder.consumer.debug());
}
- for (MessageReference reference : intermediateMessageReferences) {
- out.print("Intermediate reference:" + reference);
- }
-
- if (intermediateMessageReferences.isEmpty()) {
- out.println("No intermediate references");
- }
+ out.println("Intermediate reference size is " +
intermediateMessageReferences.size());
Review comment:
Not so easy I think...for bounded versions of qs yet (already supported in
the current/maybe next release), but for unbounded is not that easy...
We are sure we really use iterator? or is iterator + clear at the end?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
Issue Time Tracking
-------------------
Worklog Id: (was: 277330)
Time Spent: 11h (was: 10h 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: 11h
> 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.
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)
