[
https://issues.apache.org/jira/browse/DIRMINA-934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14307253#comment-14307253
]
Huanwen Qu commented on DIRMINA-934:
------------------------------------
This is definitely an important change that should be described in the release
note. If we put ProtocolCodecFilter after ExcutorServiceFliter, the
ProtocolCodecFilter will block the concurrent execution of the worker threads
due to the semaphore lock. There is no such problem in 2.0.7. We met this issue
in our production and it cost us a lot of time to find out the root cause. It's
too bad.
> Replace synchronized with a Semaphore for better performance
> ------------------------------------------------------------
>
> Key: DIRMINA-934
> URL: https://issues.apache.org/jira/browse/DIRMINA-934
> Project: MINA
> Issue Type: Improvement
> Components: Core
> Affects Versions: 2.0.7, 2.0.8
> Environment: Window 8 Pro x64, JDK 7
> Reporter: Paul Gregoire
> Labels: patch
> Fix For: 2.0.8
>
> Attachments: ProtocolCodecFilterWithSemaphoreAndMore.diff
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> Replacing the synchronized block with a Semaphore in the ProtocolCodecFilter
> provides a lot of benefit in terms of locking and also reduces CPU
> utilization. See attached git diff.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
