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Posted to dev@qpid.apache.org by "Martin Ritchie (JIRA)" <qp...@incubator.apache.org> on 2006/11/28 18:03:25 UTC
[jira] Resolved: (QPID-54) When the broker is receiving high load
client received rate falls.
[ http://issues.apache.org/jira/browse/QPID-54?page=all ]
Martin Ritchie resolved QPID-54.
--------------------------------
Resolution: Later
Awaiting changes in MINA (DIRMINA-302) to discount that as a problem.
> When the broker is receiving high load client received rate falls.
> ------------------------------------------------------------------
>
> Key: QPID-54
> URL: http://issues.apache.org/jira/browse/QPID-54
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker, Java Client
> Reporter: Martin Ritchie
> Assigned To: Martin Ritchie
> Fix For: M2
>
>
> From work on QPID-48.
> When running the IBM Sender / Receiver tests at high data rates the OS cannot keep up with the high message rate. The messages are buffered by MINA, I haven't been able to cause MINA to result in an out of memory exception but that is the logical outcome if the data rate was high enough(see DIRMINA-144, DIRMINA-262). When the sender disconnects the broker receives a high volume of messages as the Sender's MINA buffer empties.
> As these messages arrive and are processed by the DeliveryManager the data rate's received on the Receiver drop by as much as 50%. When then Sender has finally sent all messages the Receiver's data rate increases usually to a new higher level. As would be expected as it is simply draining a single queue.
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