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Posted to dev@mina.apache.org by "Jonathan Valliere (Jira)" <ji...@apache.org> on 2021/07/31 07:44:00 UTC
[jira] [Updated] (DIRMINA-723) OrderedThreadPoolExecutor behavior:
configurable queue size, corePoolSize, maximumPoolSize
[ https://issues.apache.org/jira/browse/DIRMINA-723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Valliere updated DIRMINA-723:
--------------------------------------
Sprint: Mina Sprint 2
> OrderedThreadPoolExecutor behavior: configurable queue size, corePoolSize, maximumPoolSize
> ------------------------------------------------------------------------------------------
>
> Key: DIRMINA-723
> URL: https://issues.apache.org/jira/browse/DIRMINA-723
> Project: MINA
> Issue Type: Improvement
> Components: Core
> Affects Versions: 2.0.0-M6
> Environment: Ubuntu Linux, kernel 2.6.x
> Reporter: Victor N
> Priority: Minor
>
> The problem was discussed with Emmanuel Lecharny in mail lists:
> http://www.nabble.com/OrderedThreadPoolExecutor%3A-limited-workQueue-td24275973.html
> If you compare OrderedThreadPoolExecutor and standard ThreadPoolExecutor, you can see that ThreadPoolExecutor has useful params:
> - core pool size
> - maximum pool size
> - work queue size
> If you use unbounded thread pools and queues with mina Acceptor or Connector, you may get OutOfMemoryError under critical load because Java creates too many threads.
> With ThreadPoolExecutor you may limit the number of threads (maximumPoolSize) and use a bounded queue (ex. LinkedBlockingQueue of limited capacity).
> Unfortunately, this does not work with OrderedThreadPoolExecutor -both "waitingSessions" and "sessionTasksQueue" do not allow to configure their size nor pass a different queue implementation.
> Even though OrderedThreadPoolExecutor extends ThreadPoolExecutor, it overrides the behavior significantly - seems that its meaning of "corePoolSize" and "maximumPoolSize" is different.
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