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https://issues.apache.org/jira/browse/QPID-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rob Springer updated QPID-3752:
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Attachment: QPID-3752.patch
Sample patch that resolves issue QPID-3752.
> Memory leak in DirectExchange bind/unbind
> -----------------------------------------
>
> Key: QPID-3752
> URL: https://issues.apache.org/jira/browse/QPID-3752
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Affects Versions: 0.8, 0.12
> Environment: RHEL4.7 and RHEL6.2
> Reporter: Rob Springer
> Attachments: QPID-3752.patch
>
>
> One of our customers observed that the Qpid daemon's memory footprint
> increased over a number of weeks. We were able to reproduce this in-house,
> and noticed that the increase was correlated with queu creation/deletion (our
> application, when under load, creates & destroys a large number of queues).
> This memory leak wasn't discoverable with valgrind (i.e., memcheck), since
> it's not the result of lost pointers, but massif was very useful. It appears
> that entries in the std::map Bindings (DirectExchange.h:41) created on
> DirectExchange.cpp:71 (during creation of, in our case, the default binding)
> are never deleted when the queue and binding are deleted on
> DirectExchange.cpp:~138.
> While individual map entries aren't that expensive, over several thousand
> queue creations and deletions, the memory consumed does grow to be
> substantial.
> If I explicitly delete the map entry, memory usage appears to remain stable
> over time.
> While I doubt that my fix will be best way to resolve this issue, I'll attach
> my patch anyway, in the case that it helps in understanding the issue.
> Thanks!
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