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Posted to dev@camel.apache.org by "Claus Ibsen (JIRA)" <ji...@apache.org> on 2010/09/15 10:03:40 UTC
[jira] Updated: (CAMEL-3123) Performance/scalability issue for
converter lookup
[ https://issues.apache.org/activemq/browse/CAMEL-3123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Claus Ibsen updated CAMEL-3123:
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Issue Type: Improvement (was: Bug)
> Performance/scalability issue for converter lookup
> --------------------------------------------------
>
> Key: CAMEL-3123
> URL: https://issues.apache.org/activemq/browse/CAMEL-3123
> Project: Apache Camel
> Issue Type: Improvement
> Components: camel-core
> Affects Versions: 2.4.0
> Environment: Camel 2.4.0 on apache karaf 2.0.0
> Reporter: Stephan Siano
>
> In a simple HTTP->HTTP proxy scenario (whith a Jetty or a servlet endpoint, that does not matter) I observe a very severe performance regression between Camel 2.2.0 (as in servicemix 4.2) and camel 2.4.0 running on a apache karaf 2.0.0 OSGi stack. On the same hardware I get a throughput of 3500 messages per second with Camel 2.2.0, but only 210 messages per second on Camel 2.4.0 (both servlet->HTTP). If I replace the http endpoint with a log endpoint the throughput will be about 1500 messages per second in both cases.
> I have done some profiling for this: The active CPU times as shown in the profiler remain approximately the same for both versions, however if I monitor wait times, I get very long wait times for org.apache.camel.impl.DefaultMessage.getHeader(java.lang.String,java.lang.Class) calls. If I break this down I see the java.beans.PropertyEditorManager.findEditor(java.lang.Class) call in org.apache.camel.impl.converter.PropertyEditorTypeConverter.convertTo(java.lang.Class,java.lang.Object). The findEditor() method is synchronized and initializes some class loading which takes some time.
> Why is it necessary to instantiate the type converter for each message?
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