JVM Jitter Detector Functions

The tool diagnoses the performance jitter of Java applications on the Kunpeng platform and provides minute-level JVM observation and analysis with low overhead. This helps to optimize Java applications based on abnormal metrics and reduce the jitter and latency.

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

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

An RPM package is used as an example.
Only BiSheng JDK 17 is supported.

Example

View the functions of the JVM Jitter Detector:

1	devkit diag -h

Command output:

 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.

**Table 1** Function description
Function	Description
help	Displays help information.
jvm-jitter	JVM Jitter Detector.

Parent topic: JVM Jitter Detector