Hello here is what we have:
1) AMQ -5 3.0 with the following configuration:
<broker xmlns="http://activemq.apache.org/schema/core";
brokerName="localhost" useJmx="true" dataDirectory="${activemq.base}/data">
<managementContext>
<managementContext createConnector="false"/>
</managementContext>
<persistenceAdapter>
<kahaDB directory="${activemq.base}/data/kahadb"/>
</persistenceAdapter>
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">" producerFlowControl="false"
memoryLimit="100mb">
<dispatchPolicy>
<strictOrderDispatchPolicy />
</dispatchPolicy>
<pendingSubscriberPolicy>
<vmCursor />
</pendingSubscriberPolicy>
<pendingDurableSubscriberPolicy>
<vmDurableCursor/>
</pendingDurableSubscriberPolicy>
</policyEntry>
<policyEntry queue=">" producerFlowControl="false"
memoryLimit="100mb">
<dispatchPolicy>
<strictOrderDispatchPolicy />
</dispatchPolicy>
<pendingQueuePolicy>
<vmQueueCursor/>
</pendingQueuePolicy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<systemUsage>
<systemUsage>
<memoryUsage>
<memoryUsage limit="1024 mb"/>
</memoryUsage>
<storeUsage>
<storeUsage limit="10 gb" name="foo"/>
</storeUsage>
<tempUsage>
<tempUsage limit="10 gb"/>
</tempUsage>
</systemUsage>
</systemUsage>
<transportConnectors>
<transportConnector name="openwire"
uri="tcp://0.0.0.0:61616?wireFormat.maxInactivityDuration=0"/>
</transportConnectors>
System is being run with Xm=2048M
2) Producers and clients use CMS - 3.0.1 - we don't have any features added
to CreateFactory - all defaults are used.
Results:
1) during the day watch MQ via JMX I have: totalEnqueueCount=1193470,
totaldequeuecount=628130,totalmessagecount=1052834 - this I think is wrong
... shouldn't be like that: totalmessage+totaldequeue = totalenqueue?
2) memorypercentusage=73 and it's counting ... once it gets to 100% all is
frozen and in log file I get messages like this: INFO | Usage Manager memory
limit reached on temp-queue://42455840-0bb5-0101-49b1-304ecf24dbbd:2.
Producers will be throttled to the rate at which messages are removed from
this destination to prevent flooding it. See
http://activemq.apache.org/producer-flow-control.html for more info
quite strange as flow-control is disabled.
3) watching Heap memory Usage I can see "saw chart" but it's going up and up
to 1GB and then is saturated (AMQ is frozen at that time).
4) the only thing I can do is to stop AMQ and restart ... however on
production is not a solution.
Maybe I have something wrong with configuration file? I'm also a little bit
confused about memoryLimit in topic/queue policy and memoryUsage. What
exactly these options do? I thought that if memoryUsage is 1GB and
percentUsage is 70% all messages are dropped into "file" and memory is
clean. Maybe I mixed this all up and it's not as I think it's?
Please help,
thx,
M.
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