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From "Helen Huang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQCPP-451) The number of CMS threads increases when we restart the message broker repeatedly
Date Mon, 11 Feb 2013 19:45:13 GMT

    [ https://issues.apache.org/jira/browse/AMQCPP-451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13576043#comment-13576043
] 

Helen Huang commented on AMQCPP-451:
------------------------------------

Thanks for the update!
                
> The number of CMS threads increases when we restart the message broker repeatedly 
> ----------------------------------------------------------------------------------
>
>                 Key: AMQCPP-451
>                 URL: https://issues.apache.org/jira/browse/AMQCPP-451
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>    Affects Versions: 3.5.0
>         Environment: Windows xp service pack 3, ActiveMQ broker 5.3.1, apr 1.4.2, apr-util
1.3.9, apr iconv 1.2.1
>            Reporter: Helen Huang
>            Assignee: Timothy Bish
>            Priority: Critical
>             Fix For: 3.5.0
>
>         Attachments: cmstemplate-stress.zip, CrashHang_Report__CMHMultiTestWithCom.exe__02012013222736766.mht
>
>
> The number of CMS threads increases when we restart the message broker repeatedly. We
have ten senders and ten receivers in out test. Every sender sends out 10-20 messages every
second. We restart the broker every 1 minute. The number of threads in CMS grew from about
50 to 600 after about 15 hours of testing. The attached dump was created after we ran two
hours of test. From the dump we find a large number of threads are stuck at the following
place:
> Function   Source 
> ntdll!KiFastSystemCallRet    
> ntdll!ZwWaitForSingleObject+c    
> kernel32!WaitForSingleObjectEx+a8    
> kernel32!WaitForSingleObject+12    
> activemq_cppud!decaf::internal::util::concurrent::PlatformThread::interruptibleWaitOnCondition+25
   
> activemq_cppud!`anonymous namespace'::threadEntryMethod+9b    
> msvcr80d!_callthreadstartex+51    
> msvcr80d!_threadstartex+87    
> kernel32!BaseThreadStart+37 

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