org.apache.http.NoHttpResponseException：服务器地址：80无法响应-JMeter

Question

我正在web应用程序上使用JMeter5.2运行负载测试。当我运行线程组时，即使使用超过500个线程，我也会在用户中配置jmeter:in。我设置的属性：httpclient4.retrycount=1

hc.parameters.file=hc.parameters

在hc.parameters中，我设置了:

http . connection . stale check $ Boolean = true

在Http请求中:客户端实现

 org.apache.http.NoHttpResponseException: server-address:80 failed to respond
        at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:141)
        at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
        at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
        at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
        at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157)
        at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
        at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
        at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
        at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.executeRequest(HTTPHC4Impl.java:850)
        at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:561)
        at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:67)
        at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1282)
        at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1271)
        at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:627)
        at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:551)
        at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:490)
        at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
        at java.lang.Thread.run(Unknown Source)

知道如何解决这个问题吗！

Answer 1

很可能您的应用程序过载了，因此它不能处理500个并发连接，您需要检查以下内容:

1. 您的应用程序服务器配置，即增加最大传入连接数
2. 您的后端健康状况在CPU、RAM、可用网络套接字等方面，可以使用JMeter PERMon插件完成
3. 您的应用程序配置（连接池、数据库配置等），因为它可能没有针对高负载进行适当调整