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https://issues.apache.org/jira/browse/JAMES-3086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean Helou closed JAMES-3086.
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Resolution: Fixed
I'll consider the issue to have been fixed by the architecture change
> Mail Server Load Test giving very low throughput
> ------------------------------------------------
>
> Key: JAMES-3086
> URL: https://issues.apache.org/jira/browse/JAMES-3086
> Project: James Server
> Issue Type: Bug
> Components: POP3Server, SMTPServer
> Affects Versions: 3.3.0
> Reporter: Rashid Mahmood
> Priority: Blocker
> Attachments: executors-waiting-to-acquire.png,
> image-2020-03-04-09-30-30-054.png, threaddump.txt
>
>
> After functional tests, we are performing load tests against James Server
> setup with Casandra/Elasticsearch(cassandra-ldap-guice) packaging option.
> With JMeter constant throughput timer of 300 SMPT requests per seconds we are
> achieving around 10 requests per seconds. Each Request is with 100KB
> attachment. Observed CPU of the machine (where MailServer running) was over
> exhausted.
> Many of the threads in thread dump were in awaiting notifications state.
> I see around 100 threads from Elastic search, is there any configuration to
> control this?
> Where is the bottleneck?
> !image-2020-03-04-09-30-30-054.png!
>
> See the thread dump in attachment.
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