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https://issues.apache.org/jira/browse/DIRMINA-681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12830938#action_12830938
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Mauritz Lovgren commented on DIRMINA-681:
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Hm. Still having problems running on the RC2-SNAPSHOT (from trunk as of today).
Running on RC1 (final), no problems (except the strange CPU peak as described
in the issue description every 10-15 minutes).
Running on RC2-SNAPSHOT, messages time out during delivery between server and
client. They seem to stall, whereafter no traffic passes through the proxy at
all. Switching back to RC1 and the problem is gone.
When running the test to prove that the CPU peak issue, I need at least a
couple of thousand client connections. Currently, the proxy stops handling
messages after a few hundred (not been able to connect more than 1000 clients
through the proxy with RC2 yet before everything stalls).
Could there be a performance issue with your fix?
> Strange CPU peak occuring at fixed interval when several thousand connections
> active
> ------------------------------------------------------------------------------------
>
> Key: DIRMINA-681
> URL: https://issues.apache.org/jira/browse/DIRMINA-681
> Project: MINA
> Issue Type: Task
> Components: Core
> Affects Versions: 2.0.0-M4, 2.0.0-RC1
> Environment: Windows Vista Ultimate 64-bit (on 64-bit Sun JDK
> 1.6.0_18). Intel Core 2 Quad Core Q9300 2,5 GHz, 8 GB RAM
> Reporter: Mauritz Lovgren
> Fix For: 2.0.0
>
> Attachments: screenshot-1.jpg, screenshot-2.jpg, screenshot-3.jpg,
> screenshot-4.jpg
>
>
> Observing strange CPU activity occuring at regular (seemingly fixed) interval
> with no protocol traffic activity.
> See attached window capture of task manager that shows this with 3000 active
> connections.
> Is there some kind of cleanup occuring within MINA core at a predefined
> interval?
> The 3000 connections in the example above connects within 250 seconds. A
> normal situation would be that these connections are established over a
> longer period of time, perhaps spreading the CPU peaks shown above as well,
> flattening the curve.
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