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每个线程组的概率

问题内容：

如果我的测试计划中有3个线程组，如何为每个组设置恒定的概率（请求权重）？我是JMeter的新手。您能在屏幕截图上显示您的设置吗？


问题答案：

只需将每个组的线程数设置为测试总数即可。如果100个VU，则将g1设置为50，将g2设置为30，将g3设置为20。

要使其动态，可以使用BeanShell函数，将“线程数”设置为：

${__BeanShell(50*${USERS}/100)}

并将使用包含以下内容的用户定义变量：

USERS : ${__P(USERS, 10)} // for 10 users by default,

然后可以将USERS作为命令行选项传递：

-JUSERS=100

样品：

<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="2.4" jmeter="2.9-SNAPSHOT.20121216">
  <hashTree>
    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">
      <stringProp name="TestPlan.comments"></stringProp>
      <boolProp name="TestPlan.functional_mode">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>
      <stringProp name="TestPlan.user_define_classpath"></stringProp>
    </TestPlan>
    <hashTree>
      <Arguments guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
        <collectionProp name="Arguments.arguments">
          <elementProp name="USERS" elementType="Argument">
            <stringProp name="Argument.name">USERS</stringProp>
            <stringProp name="Argument.value">${__P(USERS, 20)}</stringProp>
            <stringProp name="Argument.metadata">=</stringProp>
            <stringProp name="Argument.desc">20 is default, to change it on command line -JUSERS=30</stringProp>
          </elementProp>
        </collectionProp>
      </Arguments>
      <hashTree/>
      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Run50Pct" enabled="true">
        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
          <boolProp name="LoopController.continue_forever">false</boolProp>
          <stringProp name="LoopController.loops">1</stringProp>
        </elementProp>
        <stringProp name="ThreadGroup.num_threads">${__BeanShell(50*${USERS}/100)}</stringProp>
        <stringProp name="ThreadGroup.ramp_time">1</stringProp>
        <longProp name="ThreadGroup.start_time">1356191395000</longProp>
        <longProp name="ThreadGroup.end_time">1356191395000</longProp>
        <boolProp name="ThreadGroup.scheduler">false</boolProp>
        <stringProp name="ThreadGroup.duration"></stringProp>
        <stringProp name="ThreadGroup.delay"></stringProp>
      </ThreadGroup>
      <hashTree>
        <DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="DS1" enabled="true">
          <boolProp name="displayJMeterProperties">false</boolProp>
          <boolProp name="displayJMeterVariables">true</boolProp>
          <boolProp name="displaySystemProperties">false</boolProp>
        </DebugSampler>
        <hashTree/>
      </hashTree>
      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Run20Pct" enabled="true">
        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
          <boolProp name="LoopController.continue_forever">false</boolProp>
          <stringProp name="LoopController.loops">1</stringProp>
        </elementProp>
        <stringProp name="ThreadGroup.num_threads">${__BeanShell(20*${USERS}/100)}</stringProp>
        <stringProp name="ThreadGroup.ramp_time">1</stringProp>
        <longProp name="ThreadGroup.start_time">1356191395000</longProp>
        <longProp name="ThreadGroup.end_time">1356191395000</longProp>
        <boolProp name="ThreadGroup.scheduler">false</boolProp>
        <stringProp name="ThreadGroup.duration"></stringProp>
        <stringProp name="ThreadGroup.delay"></stringProp>
      </ThreadGroup>
      <hashTree>
        <DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="DS2" enabled="true">
          <boolProp name="displayJMeterProperties">false</boolProp>
          <boolProp name="displayJMeterVariables">true</boolProp>
          <boolProp name="displaySystemProperties">false</boolProp>
        </DebugSampler>
        <hashTree/>
      </hashTree>
      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Run30Pct" enabled="true">
        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
          <boolProp name="LoopController.continue_forever">false</boolProp>
          <stringProp name="LoopController.loops">1</stringProp>
        </elementProp>
        <stringProp name="ThreadGroup.num_threads">${__BeanShell(30*${USERS}/100)}</stringProp>
        <stringProp name="ThreadGroup.ramp_time">1</stringProp>
        <longProp name="ThreadGroup.start_time">1356191395000</longProp>
        <longProp name="ThreadGroup.end_time">1356191395000</longProp>
        <boolProp name="ThreadGroup.scheduler">false</boolProp>
        <stringProp name="ThreadGroup.duration"></stringProp>
        <stringProp name="ThreadGroup.delay"></stringProp>
      </ThreadGroup>
      <hashTree>
        <DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="DS3" enabled="true">
          <boolProp name="displayJMeterProperties">false</boolProp>
          <boolProp name="displayJMeterVariables">true</boolProp>
          <boolProp name="displaySystemProperties">false</boolProp>
        </DebugSampler>
        <hashTree/>
      </hashTree>
      <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="false">
        <boolProp name="ResultCollector.error_logging">false</boolProp>
        <objProp>
          <name>saveConfig</name>
          <value class="SampleSaveConfiguration">
            <time>true</time>
            <latency>true</latency>
            <timestamp>true</timestamp>
            <success>true</success>
            <label>true</label>
            <code>true</code>
            <message>false</message>
            <threadName>true</threadName>
            <dataType>false</dataType>
            <encoding>false</encoding>
            <assertions>false</assertions>
            <subresults>false</subresults>
            <responseData>false</responseData>
            <samplerData>false</samplerData>
            <xml>false</xml>
            <fieldNames>true</fieldNames>
            <responseHeaders>false</responseHeaders>
            <requestHeaders>false</requestHeaders>
            <responseDataOnError>false</responseDataOnError>
            <saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>
            <assertionsResultsToSave>0</assertionsResultsToSave>
            <bytes>true</bytes>
            <hostname>true</hostname>
            <threadCounts>true</threadCounts>
            <sampleCount>true</sampleCount>
          </value>
        </objProp>
        <stringProp name="filename"></stringProp>
      </ResultCollector>
      <hashTree/>
      <ResultCollector guiclass="StatVisualizer" testclass="ResultCollector" testname="Aggregate Report" enabled="true">
        <boolProp name="ResultCollector.error_logging">false</boolProp>
        <objProp>
          <name>saveConfig</name>
          <value class="SampleSaveConfiguration">
            <time>true</time>
            <latency>true</latency>
            <timestamp>true</timestamp>
            <success>true</success>
            <label>true</label>
            <code>true</code>
            <message>false</message>
            <threadName>true</threadName>
            <dataType>false</dataType>
            <encoding>false</encoding>
            <assertions>false</assertions>
            <subresults>false</subresults>
            <responseData>false</responseData>
            <samplerData>false</samplerData>
            <xml>false</xml>
            <fieldNames>true</fieldNames>
            <responseHeaders>false</responseHeaders>
            <requestHeaders>false</requestHeaders>
            <responseDataOnError>false</responseDataOnError>
            <saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>
            <assertionsResultsToSave>0</assertionsResultsToSave>
            <bytes>true</bytes>
            <hostname>true</hostname>
            <threadCounts>true</threadCounts>
            <sampleCount>true</sampleCount>
          </value>
        </objProp>
        <stringProp name="filename"></stringProp>
      </ResultCollector>
      <hashTree/>
    </hashTree>
  </hashTree>
</jmeterTestPlan>