JMeter 恒定吞吐量计时器未达到所需的 TPS

问题描述 投票：0回答：1

我有一个 JMeter 测试计划，其中添加了一个虚拟采样器和一个恒定吞吐量计时器作为其子项。我想达到 10 TPS 的目标，所以我将吞吐量设置为每分钟 600 个样本，Users - 10。但是，在运行测试后，我预计它会达到 10 TPS，但它的表现并没有达到预期。有人可以帮助我确定我可能做错了什么吗？

 <?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.6.3">
  <hashTree>
    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">
      <boolProp name="TestPlan.functional_mode">false</boolProp>
      <boolProp name="TestPlan.tearDown_on_shutdown">false</boolProp>
      <boolProp name="TestPlan.serialize_threadgroups">false</boolProp>
      <elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
        <collectionProp name="Arguments.arguments"/>
      </elementProp>
    </TestPlan>
    <hashTree>
      <Arguments guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables">
        <collectionProp name="Arguments.arguments">
          <elementProp name="TPM_TO_ACHIEVE" elementType="Argument">
            <stringProp name="Argument.name">TPM_TO_ACHIEVE</stringProp>
            <stringProp name="Argument.value">${__P(TPM_TO_ACHIEVE,600.0)}</stringProp>
            <stringProp name="Argument.metadata">=</stringProp>
          </elementProp>
          <elementProp name="TOTALDURATION" elementType="Argument">
            <stringProp name="Argument.name">TOTALDURATION</stringProp>
            <stringProp name="Argument.value">${__P(sz_duration,60)}</stringProp>
            <stringProp name="Argument.metadata">=</stringProp>
          </elementProp>
          <elementProp name="API_Invoked" elementType="Argument">
            <stringProp name="Argument.name">API_Invoked</stringProp>
            <stringProp name="Argument.value">true</stringProp>
            <stringProp name="Argument.metadata">=</stringProp>
          </elementProp>
        </collectionProp>
      </Arguments>
      <hashTree/>
      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group">
        <intProp name="ThreadGroup.num_threads">10</intProp>
        <intProp name="ThreadGroup.ramp_time">10</intProp>
        <stringProp name="ThreadGroup.duration">${TOTALDURATION}</stringProp>
        <boolProp name="ThreadGroup.same_user_on_next_iteration">true</boolProp>
        <boolProp name="ThreadGroup.scheduler">true</boolProp>
        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller">
          <intProp name="LoopController.loops">-1</intProp>
          <boolProp name="LoopController.continue_forever">false</boolProp>
        </elementProp>
      </ThreadGroup>
      <hashTree>
        <IfController guiclass="IfControllerPanel" testclass="IfController" testname="If Controller">
          <boolProp name="IfController.evaluateAll">false</boolProp>
          <boolProp name="IfController.useExpression">false</boolProp>
          <stringProp name="IfController.condition">&quot;${API_Invoked}&quot;==&quot;true&quot;</stringProp>
        </IfController>
        <hashTree>
          <kg.apc.jmeter.samplers.DummySampler guiclass="kg.apc.jmeter.samplers.DummySamplerGui" testclass="kg.apc.jmeter.samplers.DummySampler" testname="jp@gc - Dummy Sampler">
            <boolProp name="WAITING">true</boolProp>
            <boolProp name="SUCCESFULL">true</boolProp>
            <stringProp name="RESPONSE_CODE">200</stringProp>
            <stringProp name="RESPONSE_MESSAGE">OK</stringProp>
            <stringProp name="REQUEST_DATA">Dummy Sampler used to simulate requests and responses
without actual network activity. This helps debugging tests.</stringProp>
            <stringProp name="RESPONSE_DATA">Dummy Sampler used to simulate requests and responses
without actual network activity. This helps debugging tests.</stringProp>
            <stringProp name="RESPONSE_TIME">${__Random(50,500)}</stringProp>
            <stringProp name="LATENCY">${__Random(1,50)}</stringProp>
            <stringProp name="CONNECT">${__Random(1,5)}</stringProp>
            <stringProp name="URL"></stringProp>
            <stringProp name="RESULT_CLASS">org.apache.jmeter.samplers.SampleResult</stringProp>
          </kg.apc.jmeter.samplers.DummySampler>
          <hashTree>
            <ConstantThroughputTimer guiclass="TestBeanGUI" testclass="ConstantThroughputTimer" testname="Constant Throughput Timer">
              <stringProp name="throughput">${TPM_TO_ACHIEVE}</stringProp>
              <intProp name="calcMode">2</intProp>
            </ConstantThroughputTimer>
            <hashTree/>
          </hashTree>
        </hashTree>
        <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree">
          <boolProp name="ResultCollector.error_logging">true</boolProp>
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            <name>saveConfig</name>
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              <latency>true</latency>
              <timestamp>true</timestamp>
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              <label>true</label>
              <code>true</code>
              <message>true</message>
              <threadName>true</threadName>
              <dataType>true</dataType>
              <encoding>false</encoding>
              <assertions>true</assertions>
              <subresults>true</subresults>
              <responseData>false</responseData>
              <samplerData>false</samplerData>
              <xml>false</xml>
              <fieldNames>true</fieldNames>
              <responseHeaders>false</responseHeaders>
              <requestHeaders>false</requestHeaders>
              <responseDataOnError>false</responseDataOnError>
              <saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
              <assertionsResultsToSave>0</assertionsResultsToSave>
              <bytes>true</bytes>
              <sentBytes>true</sentBytes>
              <url>true</url>
              <threadCounts>true</threadCounts>
              <idleTime>true</idleTime>
              <connectTime>true</connectTime>
            </value>
          </objProp>
          <stringProp name="filename"></stringProp>
        </ResultCollector>
        <hashTree/>
        <kg.apc.jmeter.vizualizers.CorrectedResultCollector guiclass="kg.apc.jmeter.vizualizers.TransactionsPerSecondGui" testclass="kg.apc.jmeter.vizualizers.CorrectedResultCollector" testname="jp@gc - Transactions per Second">
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            <name>saveConfig</name>
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              <encoding>false</encoding>
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              <sentBytes>true</sentBytes>
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          <stringProp name="filename"></stringProp>
          <longProp name="interval_grouping">1000</longProp>
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          <boolProp name="include_checkbox_state">false</boolProp>
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        <hashTree/>
        <ResultCollector guiclass="StatVisualizer" testclass="ResultCollector" testname="Aggregate Report">
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            <name>saveConfig</name>
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              <latency>true</latency>
              <timestamp>true</timestamp>
              <success>true</success>
              <label>true</label>
              <code>true</code>
              <message>true</message>
              <threadName>true</threadName>
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              <encoding>false</encoding>
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              <subresults>true</subresults>
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              <xml>false</xml>
              <fieldNames>true</fieldNames>
              <responseHeaders>false</responseHeaders>
              <requestHeaders>false</requestHeaders>
              <responseDataOnError>false</responseDataOnError>
              <saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
              <assertionsResultsToSave>0</assertionsResultsToSave>
              <bytes>true</bytes>
              <sentBytes>true</sentBytes>
              <url>true</url>
              <threadCounts>true</threadCounts>
              <idleTime>true</idleTime>
              <connectTime>true</connectTime>
            </value>
          </objProp>
          <stringProp name="filename"></stringProp>
        </ResultCollector>
        <hashTree/>
      </hashTree>
    </hashTree>
  </hashTree>
</jmeterTestPlan>

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jmeter jmeter-plugins jmeter-5.0 jmeter-3.2
1个回答
0
投票

平均响应时间为276毫秒，这意味着I个用户每秒可以发出3.62个请求，10个用户每秒可以发出36个请求。

如果每秒需要 600 个请求，则需要将数量增加到 166+

你还可以看看Throughput Shaping Timer和Concurrency Thread Group组合，它们可以通过Feedback function连接在一起，这样如果当前数量不够，JMeter将能够启动额外的线程以达到所需的吞吐量。

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