activemq-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rob Davies (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (AMQ-1202) 4.2 Broker memory leak wrt network connectors
Date Thu, 18 Oct 2007 03:56:23 GMT

     [ https://issues.apache.org/activemq/browse/AMQ-1202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rob Davies resolved AMQ-1202.
-----------------------------

    Resolution: Fixed

Added testcase:  org.apache.activemq.network.NetworkConnectionsCleanedupTest in svn revision
585843
profiled for an hour - memory usage remained below 3mb for the jvm in this time

> 4.2 Broker memory leak wrt network connectors
> ---------------------------------------------
>
>                 Key: AMQ-1202
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1202
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.0.0
>            Reporter: Kevin Yaussy
>            Assignee: Rob Davies
>             Fix For: 5.0.0
>
>         Attachments: jmap.tar
>
>
> If the NetworkConnector list contains any entries to unavailable / unreachable targets,
memory is leaked.
> Tested with a broker having fairly "stock" settings, and with the following NetworkConnector
section:
>     <networkConnectors>
>       <networkConnector uri="static://(tcp://dummy:5111?connectionTimeout=5000)" prefetchSize="10000"/>
>     </networkConnectors>
> I am using JDK 1.6, since that version of jmap allows the "-histo:live" switch, producing
a list of the live objects.
> Just after starting the Broker, here is the top 10 entries from jmap:
> num   #instances    #bytes  class name
> --------------------------------------
>   1:     36639     4143792  <constMethodKlass>
>   2:     36639     2935200  <methodKlass>
>   3:     54423     2326752  <symbolKlass>
>   4:      8099     2008984  [B
>   5:      3451     1771816  <constantPoolKlass>
>   6:      3451     1433032  <instanceKlassKlass>
>   7:     14220     1212160  [C
>   8:      2894     1089840  <constantPoolCacheKlass>
>   9:         8      524352  [Lorg.apache.activemq.command.DataStructure;
> And then after about 5 minutes or so, here's the jmap top 10:
> num   #instances    #bytes  class name
> --------------------------------------
>   1:       198    12977712  [Lorg.apache.activemq.command.DataStructure;
>   2:     36647     4144520  <constMethodKlass>
>   3:     36647     2935840  <methodKlass>
>   4:     54427     2326960  <symbolKlass>
>   5:      8293     2207032  [B
>   6:      3455     1773488  <constantPoolKlass>
>   7:      3455     1434376  <instanceKlassKlass>
>   8:     14499     1234040  [C
>   9:      2898     1091120  <constantPoolCacheKlass>
>  10:     17754      426096  java.lang.String
> Not sure what component down the list is holding onto DataStructure, but I've included
the full jmap output files.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message