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From "Claus Ibsen (JIRA)" <>
Subject [jira] [Updated] (AMQ-3997) Memory leak in activemq-pool
Date Tue, 28 Aug 2012 11:06:08 GMT


Claus Ibsen updated AMQ-3997:

    Attachment: bad.png

bad.png is is a screenshot before the fix
> Memory leak in activemq-pool
> ----------------------------
>                 Key: AMQ-3997
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.6.0
>            Reporter: Claus Ibsen
>             Fix For: 5.7.0
>         Attachments: bad.png
> The org.apache.activemq.pool.PooledConnectionFactory from activemq-pool has a severe
memory leak when using it for sending a lot of messages. Over time this causes memory to be
eaten up.
> I have tracked it down to the following tickets:
> - AMQ-3680, which keeps adding event listeners, despite previously added
> - AMQ-2643, code which keep track of loaned sessions, causing JVM to create too many
ConcurrentLinkedQueue$Node instances
> There may be others. But with resolutions to those I can get the pool to not eat memory,
and keep memory consumption low.

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