title: How to control output to jmeter .jtl log file
body: <p>I created a JMeter test plan for testing Tibco EMS messaging. It contains 1 JMS Message publisher and 5 JMS Message Subscriber samplers.  I can run it easily via the JMeter GUI with 60,000 EMS messages without issue.  However, it crawls then stalls at about 2,000 messages  when I run it in Command Line Mode (CLI) using the local command below:</p>
  
  <pre><code> C:\jmeter\apache-jmeter-2.9\bin\jmeter.bat -n -r -t  C:\jmeter\apache-jmeter-2.9\bin\EMS-85-TestPlan.jmx  -l  C:\jmeter\apache-jmeter-2.9\logs\EMS-85-JMeterGUIStats.jtl
  </code></pre>
  
  <p>The resulting .jtl file is 88,600 lines.  I removed the .jtl command option and the test finished as fast as the gui test.  </p>
  
  <p>How can I configure JMeter to update the .jtl file for only the "JMS Message publisher" samples?  I think this will resolve my bottleneck and still provide the required reporting.</p>