[jira] [Created] (CAMEL-7374) Slow message processing due to unnecessary logging

["Martin Marinov (JIRA)" <ji...@apache.org>]

Martin Marinov created CAMEL-7374:
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             Summary: Slow message processing due to unnecessary logging
                 Key: CAMEL-7374
                 URL: https://issues.apache.org/jira/browse/CAMEL-7374
             Project: Camel
          Issue Type: Bug
          Components: camel-core, camel-jms
    Affects Versions: 2.12.1
         Environment: Windows 7 Enterprise 64 bit, Oracle JRE 1.7.0.51
            Reporter: Martin Marinov
         Attachments: hotspot_bad.JPG

org.apache.camel.component.jms.EndpointMessageListener.onMessage, line 68:
LOG.debug("{} consumer received JMS message: {}", endpoint, message);

When debug logging is disabled, the log string from above will not be output anywhere. Nevertheless, it will still be generated. The problem is that DefaultEndpoint.toString() calls URISupport.sanitizeUri() which uses regex pattern matching and replacing to process the passed endpoint URL. The java.util.regex.Matcher.replaceFirst methods turned out to be rather time consuming, thus slowing down the message processing and decreasing the message throughput under high loads. 

The same problem is observed in org.apache.camel.processor.SendProcessor.process(). It causes slower sending.

Commenting the LOG.debug invocations at these places improved the message throughput almost 3 times! The solution, of course is not comment these lines, but probably to put them inside
if (LOG.isDebugEnabled()) { } blocks.



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