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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-7024) BDB HA - Group change thread-pool sized to availableProcessors +1
Date Tue, 02 Feb 2016 18:10:39 GMT

    [ https://issues.apache.org/jira/browse/QPID-7024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15128695#comment-15128695
] 

ASF subversion and git services commented on QPID-7024:
-------------------------------------------------------

Commit 1728167 from orudyy@apache.org in branch 'java/trunk'
[ https://svn.apache.org/r1728167 ]

QPID-7024: Set the number of threads in 'group change learner' thread pool to 'group size'
+ 1

> BDB HA - Group change thread-pool sized to availableProcessors +1
> -----------------------------------------------------------------
>
>                 Key: QPID-7024
>                 URL: https://issues.apache.org/jira/browse/QPID-7024
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Broker
>            Reporter: Keith Wall
>            Priority: Minor
>
> The BDB HA implementation internally uses a thread pool to process group change events.
 This thread pool is sized to {{Runtime.getRuntime().availableProcessors() + 1}}.  On a machine
with many cores, this will create a very large number of threads.
> There is probably no reason why this thread pool needs to be quite so large.  This problem
does not cause a functional impact, but will consume more resources (threads + stack) than
required.



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