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JMeter TCP Test

JMeter 설치 및 실행

TCP 테스트

  • 아래 그림 좌측 같이 Thread Group, View Results Tree, TCP Sampler 를 추가

  • TCP Sampler 에서 아래 그림과 같이 설정

  • Text to send 내용에 공백 라인 반드시 추가

    Imgur

  • 테스트 결과

    Imgur

    Imgur

  • Text to send 내용에 공백 라인 추가 하지 않으면 서버로 전송을 하지 않으며,

    • Response Timeout 설정을 안 해두면 계속 먹통,

    • Response Timeout 설정을 해두면 서버로부터 응답은 받지 못해 bytes read 가 0인 채로 Response Timeout 되고,

    • Timeout 되면서 버퍼에 있던 데이터가 비정상적으로 서버에 전송되고 클라이언트에 echo 하지만, 클라이언트는 이미 Timeout 된 상태

      2020-10-31 11:59:27,443 INFO o.a.j.e.StandardJMeterEngine: Running the test!
2020-10-31 11:59:27,444 INFO o.a.j.s.SampleEvent: List of sample_variables: []
2020-10-31 11:59:27,444 INFO o.a.j.g.u.JMeterMenuBar: setRunning(true, *local*)
2020-10-31 11:59:27,480 INFO o.a.j.e.StandardJMeterEngine: Starting ThreadGroup: 1 : Thread Group
2020-10-31 11:59:27,480 INFO o.a.j.e.StandardJMeterEngine: Starting 1 threads for group Thread Group.
2020-10-31 11:59:27,480 INFO o.a.j.e.StandardJMeterEngine: Thread will continue on error
2020-10-31 11:59:27,480 INFO o.a.j.t.ThreadGroup: Starting thread group... number=1 threads=1 ramp-up=1 delayedStart=false
2020-10-31 11:59:27,481 INFO o.a.j.t.ThreadGroup: Started thread group number 1
2020-10-31 11:59:27,481 INFO o.a.j.e.StandardJMeterEngine: All thread groups have been started
2020-10-31 11:59:27,481 INFO o.a.j.t.JMeterThread: Thread started: Thread Group 1-1
2020-10-31 11:59:27,481 INFO o.a.j.p.t.s.TCPClientImpl: Using platform default charset:UTF-8
2020-10-31 11:59:28,486 INFO o.a.j.t.JMeterThread: Thread is done: Thread Group 1-1
2020-10-31 11:59:28,486 INFO o.a.j.t.JMeterThread: Thread finished: Thread Group 1-1
2020-10-31 11:59:28,487 INFO o.a.j.e.StandardJMeterEngine: Notifying test listeners of end of test
2020-10-31 11:59:28,487 INFO o.a.j.g.u.JMeterMenuBar: setRunning(false, *local*)
2020-10-31 12:12:53,414 INFO o.a.j.e.StandardJMeterEngine: Running the test!
2020-10-31 12:12:53,419 INFO o.a.j.s.SampleEvent: List of sample_variables: []
2020-10-31 12:12:53,420 INFO o.a.j.g.u.JMeterMenuBar: setRunning(true, *local*)
2020-10-31 12:12:53,507 INFO o.a.j.e.StandardJMeterEngine: Starting ThreadGroup: 1 : Thread Group
2020-10-31 12:12:53,507 INFO o.a.j.e.StandardJMeterEngine: Starting 1 threads for group Thread Group.
2020-10-31 12:12:53,507 INFO o.a.j.e.StandardJMeterEngine: Thread will continue on error
2020-10-31 12:12:53,507 INFO o.a.j.t.ThreadGroup: Starting thread group... number=1 threads=1 ramp-up=1 delayedStart=false
2020-10-31 12:12:53,507 INFO o.a.j.t.ThreadGroup: Started thread group number 1
2020-10-31 12:12:53,507 INFO o.a.j.e.StandardJMeterEngine: All thread groups have been started
2020-10-31 12:12:53,508 INFO o.a.j.t.JMeterThread: Thread started: Thread Group 1-1
2020-10-31 12:12:53,508 INFO o.a.j.p.t.s.TCPClientImpl: Using platform default charset:UTF-8
2020-10-31 12:12:56,511 ERROR o.a.j.p.t.s.TCPSampler: 
org.apache.jmeter.protocol.tcp.sampler.ReadException: Error reading from server, bytes read: 0
  at org.apache.jmeter.protocol.tcp.sampler.TCPClientImpl.read(TCPClientImpl.java:122) ~[ApacheJMeter_tcp.jar:5.3]
  at org.apache.jmeter.protocol.tcp.sampler.TCPSampler.sample(TCPSampler.java:398) [ApacheJMeter_tcp.jar:5.3]
  at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:630) [ApacheJMeter_core.jar:5.3]
  at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:558) [ApacheJMeter_core.jar:5.3]
  at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489) [ApacheJMeter_core.jar:5.3]
  at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) [ApacheJMeter_core.jar:5.3]
  at java.lang.Thread.run(Thread.java:832) [?:?]
Caused by: java.net.SocketTimeoutException: Read timed out
  at sun.nio.ch.NioSocketImpl.timedRead(NioSocketImpl.java:283) ~[?:?]
  at sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:309) ~[?:?]
  at sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:350) ~[?:?]
  at sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:803) ~[?:?]
  at java.net.Socket$SocketInputStream.read(Socket.java:982) ~[?:?]
  at java.io.InputStream.read(InputStream.java:218) ~[?:?]
  at org.apache.jmeter.protocol.tcp.sampler.TCPClientImpl.read(TCPClientImpl.java:105) ~[ApacheJMeter_tcp.jar:5.3]
  ... 6 more
2020-10-31 12:12:56,512 INFO o.a.j.t.JMeterThread: Thread is done: Thread Group 1-1
2020-10-31 12:12:56,512 INFO o.a.j.t.JMeterThread: Thread finished: Thread Group 1-1
2020-10-31 12:12:56,512 INFO o.a.j.e.StandardJMeterEngine: Notifying test listeners of end of test
2020-10-31 12:12:56,513 INFO o.a.j.g.u.JMeterMenuBar: setRunning(false, *local*)

  • TCP Sampler 관련 자세한 내용은 https://jmeter.apache.org/usermanual/component_reference.html#TCP_Sampler 참고

부하 테스트

  • 부하를 주기 위한 설정은 Thread Group 에서 지정한다.

    Imgur

  • jmeter 실행 창에 보면 부하 테스트에는 GUI 모드를 사용하지 말라고 나오며, 터미널에서 사용할 명령어도 친절히 알려준다.

    Imgur

    ./jmeter -n -t ~/JMeter-JavaTcpServerTester.jmx -l ~/jmeter-result -e -o ~/jmeter-web-result-4-thread-socket-server-05-500

    • -l 옵션으로 지정한 결과 파일에 저장된 데이터를 기반으로 -e -o 옵션으로 지정한 폴더에 html 보고서를 만들어준다.

      Imgur

  • https://jmeter.apache.org/usermanual/best-practices.html#lean_mean 를 참고해서 다음과 같이 View Results Tree 도 비활성화한다.

    Imgur