Print short description of agent parameters.
Suppress diagnostics messages that the profiler agent prints to the console. By default, /Snapshots directory is used. Specify directory where snapshots are created.
#Yourkit java profiler license key free free
By default any free port is chosen.Īllow only local connections to profiled application Specify port that the profiler agent listens on for communication with the Profiler. This option is automatically used when the profiled application is started from the IDE. CPU snapshot iscaptured automatically if CPU profiling is enabled when the profiled application exits.Ĭapture telemetry snapshot on exit. This option cannot be used in combination with 'disablealloc'.Īutomatically capture memory snapshot when used heap memory reaches the threshold.Īlways capture memory snapshot on exit. You do not have to record allocations right from the start instead, you can start or stop recording later from the Profiler or using Profiler API. As many objects as possible are recorded, keeping overhead at moderate level. Launch Java application with started object allocation recording. This option cannot be used in combination with 'disablealloc'. This option only affects CPU profiling started with 'sampling' or 'tracing'. This option cannot be used in combination with 'disablecounts'.ĭon't perform J2EE high-level profiling. Instead, in many cases, you'd better start or stop the measuring later from the user interface or using Profiler API. You do not have to profile CPU right from the start. Launch Java application with CPU tracing turned on. Instead, in many cases you'd better start or stop the measuring later from the user interface or using Profiler API. Launch Java application with CPU sampling turned on. (Java 5 and newer / JVMTI only) Don't instrument bytecode with instructions needed for J2EE profiling. (Java 5 and newer / JVMTI only) Don't instrument bytecode with instructions needed for CPU tracing. (Java 5 and newer / JVMTI only) Don't instrument bytecode with instructions needed for object allocation recording. serverctl and you get a list of all available options. To get a complete list of the available options, type. Setting the above described env variables is still mandatory, but setting the additional JVM option is not: It includes the option to start the JVM with the YourKit agent library.
Hint: In CQ 4.2, the serverctl script has become more advanced, allowing for providing various options on startup. Profiler agent is listening on port 10001. *** HINT ***: Use Java 5 (or newer) when possible! The agent library prints some information to the standard output (in case of CQ it is server(logs/startup.log): Now you're ready to start your application and the actual profiling. Now it is a matter of telling the JVM to actually integrate this library, which differs according to the JVM version in use: Java Version This setting makes the agent library available to the JVM. #- # enables the YourKit Java Profiler #- YJP_HOME="/home/honwai/yjp-6.0.16/bin/linux-x86-32" export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$YJP_HOME Include setting environment variables in the start-script of your application.įor example, in a CQ start script under Linux, do the following: First, enable profiling by providing the path to the respective OS agent library where the JVM is running on (see Enabling Profiling). You integrate the YourKit agent library into the JVM where the target application you want to profile is running. Note: Official builds of Teku are performed with Java 11.īuilding on a more recent version of Java is supported, but the resulting build will not work on earlier versions of Java.To be able to profile a Java application, it is necessary to provide the YourKit tool an interface to the Java application.
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