Slow KahaDB
-----------
Key: AMQ-2837
URL: https://issues.apache.org/activemq/browse/AMQ-2837
Project: ActiveMQ
Issue Type: Bug
Components: Broker
Affects Versions: 5.3.2
Environment: Linux
Reporter: Andy
I'm using KahaDB for persistence with the following configuration:
<?xml version="1.0" encoding="UTF-8"?>
<beans>
<broker brokerName="test-broker"
persistent="true"
useJmx="true"
useShutdownHook="false"
deleteAllMessagesOnStartup="false"
xmlns="http://activemq.apache.org/schema/core";>
<persistenceAdapter>
<kahaDB directory="activemq-data" journalMaxFileLength="32mb"
indexCacheSize="10000000
"/>
</persistenceAdapter>
<transportConnectors>
<transportConnector uri="tcp://localhost:61616"/>
</transportConnectors>
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">">
<subscriptionRecoveryPolicy>
<timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
</subscriptionRecoveryPolicy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
</broker>
</beans>
I've some durable consumers. The broker is showing many "Slow KahaDB access"
log entries.
Any suggestions?
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348
ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
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