JVM Jitter Detector Functions

Command Function

Monitors the code cache and JIT compiler metrics of Java applications, generates alarms when detecting abnormal metrics that cause performance jitter, and supports offline analysis. You can analyze diagnosis data to find out the causes of code cache and JIT de-optimization exceptions.

Syntax

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devkit diag [-h | --help] TASK [ARGS]

Example

View the functions of the JVM Jitter Detector:

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devkit diag -h

Command output:

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 Usage: devkit diag [-h | --help] TASK [ARGS]

 The most commonly used devkit diag sub tasks are:
   help         Get help information
   jvm-jitter   Run the JVM performance collection and diagnosis task

 See 'devkit diag TASK --help' for more information on a specific task.