![]() Also includes messages from ERROR log level. WARN - Includes information about events to be warned about from JMeter and during script run.Example of ERROR log message: 16:57:01,895 ERROR e.l.j.w.PingPongSampler: Sampler 'WebSocket Ping/Pong': there is no connection to re-use ERROR - Includes information about error events from JMeter and during script run.Switching between these options will change the details in the JMeter log: The latest version of JMeter has a few more log level options than the previous versions. The third way to change the log level is to use the Log Level menu of JMeter. Option 3 - Changing the Log Level via Menu Start JMeter with the following command and check the log as in previous steps. Changing the root logger configuration can be done with the -L flag, but without the category name. The log contains full wire and context information as in step 8 of this blog post.ġ4. Overriding a logging setting for a particular category can be done by using the following option: -L= After those manipulations your log should be clean again. ![]() Option 2 - Changing the Configuration Using the Command lineĪnother way to change the log level for specific categories or for the root logger is to start JMeter with specific flags using the command line.įirst of all, revert all changes in the log4j2.xml file so that we can try changing the configuration via the command line.ĩ. Restart JMeter and run the script again.Īs we can see the log contains advanced information about the HTTP request. Use it only to debug problems, since storing all request and response data could take a lot of disk space.Ĭontext logging is logging of information about the internal operations of the HttpClient when executing HTTP requests.Ĩ. Wire logging is logging of all data transferred between the server and JMeter when executing HTTP requests. This category (.ntrol) will enable full wire and context logging. Uncomment the next line of code in the log4j2.xml file: Option 1 - Changing the Configuration Using the log4j2.xml Fileĥ. There is no information about cookies or about the content of the HTTP Request. ![]() The log contains basic information about our test run. This sampler is needed to demonstrate logging configuration possibilities for HTTP Requests. Thread Group -> Add -> Sampler -> HTTP Request Add an HTTP Request that opens the landing page of the test web app. This config element is needed to demonstrate logging configuration possibilities for HTTP Controls.ģ. Thread Group -> Add -> Config Element -> HTTP Cookie ManagerĪdd the following row to the User-Defined Cookies area: Add an HTTP Cookie Manager to the Thread Group. Test plan -> Add -> Thread (Users) -> Thread GroupĢ. This website is available for anyone who wants to play with load testing. We will use the BlazeDemo website ( ) to create our script and run tests. We need a short JMeter script to demonstrate making changes in our logging configuration. Let’s consider how to change the configuration and how it works in some real examples. ![]() There are many options for changing the events presented in the log that could be useful in various cases. The Loggers section is responsible for the content of the log. The default pattern looks like this: %d %p %c: %m%n, the message will look like this: INFO o.a.j.s.SampleResult: eNanoTime=true Patterns are the structure of each message in the log. It specifies the pattern of log messages. The Appenders section is responsible for the format of messages in the log. The configuration file contains two main parts: Appenders and Loggers.
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