[英]Concurrency in JMeter
我在JMeter中有一個關於並發性和恆定吞吐量的查詢。 你能幫我這個忙嗎?
假設我有一個簡單的JMeter腳本來測試Rest api(get),並且不同的JMeter參數設置如下。
Number of threads(users)= 5,
Duration = 600 sec(10 minutes),
Ramp up = 1 sec
恆定吞吐量計時器
Target throughput=5 per minute,
Calculate throughput based on=all active threads in the current thread group.
假設:Api立即做出響應,沒有任何延遲。
題
我對JMeter的理解如下:如果我執行腳本,則JMeter將並發觸發5個get
請求(因為線程數設置為5),然后JMeter將等待一分鍾(因為吞吐量設置為每分鍾5個)。並且JMeter已同時觸發5個請求),然后再次同時觸發5個請求,此過程將持續600秒。 我的理解正確嗎?
提前致謝
====================================================================== ============
<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="2.9" jmeter="3.0 r1743807">
<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>
<ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread" 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>
<intProp name="LoopController.loops">-1</intProp>
</elementProp>
<stringProp name="ThreadGroup.num_threads">5</stringProp>
<stringProp name="ThreadGroup.ramp_time">1</stringProp>
<longProp name="ThreadGroup.start_time">1472550371000</longProp>
<longProp name="ThreadGroup.end_time">1472550371000</longProp>
<boolProp name="ThreadGroup.scheduler">true</boolProp>
<stringProp name="ThreadGroup.duration">600</stringProp>
<stringProp name="ThreadGroup.delay"></stringProp>
</ThreadGroup>
<hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Sampler" enabled="true">
<boolProp name="HTTPSampler.postBodyRaw">true</boolProp>
<elementProp name="HTTPsampler.Arguments" elementType="Arguments">
<collectionProp name="Arguments.arguments">
<elementProp name="" elementType="HTTPArgument">
<boolProp name="HTTPArgument.always_encode">false</boolProp>
<stringProp name="Argument.value"></stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="HTTPSampler.domain">reqres.in</stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
<stringProp name="HTTPSampler.protocol">https</stringProp>
<stringProp name="HTTPSampler.contentEncoding"></stringProp>
<stringProp name="HTTPSampler.path">/api/users/2</stringProp>
<stringProp name="HTTPSampler.method">GET</stringProp>
<boolProp name="HTTPSampler.follow_redirects">true</boolProp>
<boolProp name="HTTPSampler.auto_redirects">false</boolProp>
<boolProp name="HTTPSampler.use_keepalive">true</boolProp>
<boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
<boolProp name="HTTPSampler.monitor">false</boolProp>
<stringProp name="HTTPSampler.embedded_url_re"></stringProp>
</HTTPSamplerProxy>
<hashTree>
<ConstantThroughputTimer guiclass="TestBeanGUI" testclass="ConstantThroughputTimer" testname="Constant Throughput Timer" enabled="true">
<intProp name="calcMode">2</intProp>
<doubleProp>
<name>throughput</name>
<value>5.0</value>
<savedValue>0.0</savedValue>
</doubleProp>
</ConstantThroughputTimer>
<hashTree/>
</hashTree>
</hashTree>
<ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="Listner" 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>true</message>
<threadName>true</threadName>
<dataType>true</dataType>
<encoding>false</encoding>
<assertions>true</assertions>
<subresults>true</subresults>
<responseData>false</responseData>
<samplerData>false</samplerData>
<xml>true</xml>
<fieldNames>false</fieldNames>
<responseHeaders>false</responseHeaders>
<requestHeaders>false</requestHeaders>
<responseDataOnError>false</responseDataOnError>
<saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>
<assertionsResultsToSave>0</assertionsResultsToSave>
<bytes>true</bytes>
</value>
</objProp>
<stringProp name="filename"></stringProp>
</ResultCollector>
<hashTree/>
</hashTree>
</hashTree>
</jmeterTestPlan>
============================================================== ============== 在此處輸入圖像描述
不會,JMeter將立即啟動5個線程,然后將每分鍾維護5個請求,這意味着每12秒鍾將命中服務器,它將持續10分鍾。 因此,總共您將有大約50 + 5個采樣器,實際數量將取決於您的響應時間。
有關更多詳細信息,請參見如何使用JMeter的“恆定吞吐量計時器”文章。
如果您希望JMeter每分鍾運行5個並發采樣器,則需要進行不同的設置,例如:
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