JMeter笔记12 | JMeter集合点
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12 | JMeter集合点
1 集合点
- 性能测试需要模拟大量用户并发，而集合点就是尽量让虚拟用户同一时刻发送请求；
- JMeter中集合点通过定时器来完成。
2 定时器
- 定时器主要是用来控制取样器的执行时机；
- 有固定定时器、随机定时器等；
- 本文主要介绍的是同步定时器。
3 同步定时器
- 同步定时器用来保证取样器在同一时刻向服务器发起负载。
3.1 参数说明
| 参数 | 说明 |
|---|---|
| 名称 | 随意设置具有业务含义即可 |
| 注释 | 随意设置，可为空 |
| 模拟用户组的数量 | 设置多少用户进行同步操作；0表示执行线程组的线程数；设为3则只会执行三个线程数； |
| 超时时间 | 以第一个到达同步定时器的用户开始，如果在设置的时间内所有用户都达到了，就立即释放后续操作，如果在设置的时间内还没达到，则目前到达集合点的用户先进行释放做后续操作；设置为0则一直等待；如果设置为3，线程设置为永远循环，每凑够三个就会执行释放； |
4 实例说明
-
模拟10秒并发50；
-
同步定时器：模拟用户组的数量为5，超时时间为10ms，相当于每秒5个；
-
从【监听元件】中添加【用表格查看结果】，可以看到有50个请求。
5 本文涉及到的脚本
<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.3">
<hashTree>
<TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="测试计划" enabled="true">
<stringProp name="TestPlan.comments"></stringProp>
<boolProp name="TestPlan.functional_mode">false</boolProp>
<boolProp name="TestPlan.tearDown_on_shutdown">true</boolProp>
<boolProp name="TestPlan.serialize_threadgroups">false</boolProp>
<elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="用户定义的变量" enabled="true">
<collectionProp name="Arguments.arguments">
<elementProp name="COMMON" elementType="Argument">
<stringProp name="Argument.name">COMMON</stringProp>
<stringProp name="Argument.value">/zentao/api.php/v1</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="TestPlan.user_define_classpath"></stringProp>
</TestPlan>
<hashTree>
<HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="HTTP信息头管理器" enabled="true">
<collectionProp name="HeaderManager.headers">
<elementProp name="" elementType="Header">
<stringProp name="Header.name">Content-Type</stringProp>
<stringProp name="Header.value">application/json</stringProp>
</elementProp>
</collectionProp>
</HeaderManager>
<hashTree/>
<ConfigTestElement guiclass="HttpDefaultsGui" testclass="ConfigTestElement" testname="HTTP请求默认值" enabled="true">
<elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="用户定义的变量" enabled="true">
<collectionProp name="Arguments.arguments"/>
</elementProp>
<stringProp name="HTTPSampler.domain">127.0.0.1</stringProp>
<stringProp name="HTTPSampler.port">80</stringProp>
<stringProp name="HTTPSampler.protocol">http</stringProp>
<stringProp name="HTTPSampler.contentEncoding">UTF-8</stringProp>
<stringProp name="HTTPSampler.path"></stringProp>
<stringProp name="HTTPSampler.concurrentPool">6</stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
</ConfigTestElement>
<hashTree/>
<ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="禅道接口" enabled="true">
<stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
<elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="循环控制器" enabled="true">
<boolProp name="LoopController.continue_forever">false</boolProp>
<stringProp name="LoopController.loops">1</stringProp>
</elementProp>
<stringProp name="ThreadGroup.num_threads">50</stringProp>
<stringProp name="ThreadGroup.ramp_time">10</stringProp>
<boolProp name="ThreadGroup.scheduler">false</boolProp>
<stringProp name="ThreadGroup.duration"></stringProp>
<stringProp name="ThreadGroup.delay"></stringProp>
<boolProp name="ThreadGroup.same_user_on_next_iteration">true</boolProp>
</ThreadGroup>
<hashTree>
<TransactionController guiclass="TransactionControllerGui" testclass="TransactionController" testname="事务控制器" enabled="true">
<boolProp name="TransactionController.includeTimers">false</boolProp>
<boolProp name="TransactionController.parent">true</boolProp>
</TransactionController>
<hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="1-获取token" 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">"account": "admin", "password": "123456"</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="HTTPSampler.domain"></stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.protocol"></stringProp>
<stringProp name="HTTPSampler.contentEncoding">UTF-8</stringProp>
<stringProp name="HTTPSampler.path">/$COMMON/tokens</stringProp>
<stringProp name="HTTPSampler.method">POST</stringProp>
<boolProp name="HTTPSampler.follow_redirects">true</boolProp>
<boolProp name="HTTPSampler.auto_redirects">false</boolProp>
<boolProp name="HTTPSampler.use_keepalive">true</boolProp>
<boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
<stringProp name="HTTPSampler.embedded_url_re"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
</HTTPSamplerProxy>
<hashTree>
<JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="JSON提取器-提取返回的token" enabled="false">
<stringProp name="JSONPostProcessor.referenceNames">token</stringProp>
<stringProp name="JSONPostProcessor.jsonPathExprs">$.token</stringProp>
<stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
<stringProp name="JSONPostProcessor.defaultValues">无</stringProp>
</JSONPostProcessor>
<hashTree/>
<RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正则表达式提取器" enabled="true">
<stringProp name="RegexExtractor.useHeaders">false</stringProp>
<stringProp name="RegexExtractor.refname">token</stringProp>
<stringProp name="RegexExtractor.regex">"token":"(.*?)"</stringProp>
<stringProp name="RegexExtractor.template">$1$</stringProp>
<stringProp name="RegexExtractor.default"></stringProp>
<stringProp name="RegexExtractor.match_number">1</stringProp>
</RegexExtractor>
<hashTree/>
<ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="响应断言-响应代码" enabled="true">
<collectionProp name="Asserion.test_strings">
<stringProp name="49587">201</stringProp>
</collectionProp>
<stringProp name="Assertion.custom_message"></stringProp>
<stringProp name="Assertion.test_field">Assertion.response_code</stringProp>
<boolProp name="Assertion.assume_success">false</boolProp>
<intProp name="Assertion.test_type">2</intProp>
</ResponseAssertion>
<hashTree/>
</hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="1-1-获取用户列表" 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">"page": 1,"limit": 20</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="HTTPSampler.domain"></stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.protocol"></stringProp>
<stringProp name="HTTPSampler.contentEncoding"></stringProp>
<stringProp name="HTTPSampler.path">/$COMMON/users</stringProp>
<stringProp name="HTTPSampler.method">GET</stringProp>
<boolProp name="HTTPSampler.follow_redirects">true</boolProp>
<boolProp name="HTTPSampler.auto_redirects">false</boolProp>
<boolProp name="HTTPSampler.use_keepalive">true</boolProp>
<boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
<stringProp name="HTTPSampler.embedded_url_re"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
</HTTPSamplerProxy>
<hashTree>
<HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="保持登陆会话" enabled="true">
<collectionProp name="HeaderManager.headers">
<elementProp name="" elementType="Header">
<stringProp name="Header.name">token</stringProp>
<stringProp name="Header.value">$token</stringProp>
</elementProp>
</collectionProp>
</HeaderManager>
<hashTree/>
<ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="响应断言-响应文本" enabled="true">
<collectionProp name="Asserion.test_strings">
<stringProp name="-1677599864">"page":1</stringProp>
</collectionProp>
<stringProp name="Assertion.custom_message"></stringProp>
<stringProp name="Assertion.test_field">Assertion.response_data</stringProp>
<boolProp name="Assertion.assume_success">false</boolProp>
<intProp name="Assertion.test_type">2</intProp>
</ResponseAssertion>
<hashTree/>
</hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="2-创建用户" 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">"account": "$account", "password": "$password", "realname": "测试用户"</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="HTTPSampler.domain"></stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.protocol"></stringProp>
<stringProp name="HTTPSampler.contentEncoding">UTF-8</stringProp>
<stringProp name="HTTPSampler.path">/$COMMON/users</stringProp>
<stringProp name="HTTPSampler.method">POST</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>
<stringProp name="HTTPSampler.embedded_url_re"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
</HTTPSamplerProxy>
<hashTree>
<HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="保持登陆会话" enabled="true">
<collectionProp name=JMeter笔记12 | JMeter集合点