JVM command-line options and GC logs

First, set the parameters

When using the Eclipse compiler, you can set the parameters of the virtual machine in the following ways:

Settings for the specific parameters:

In this case, we'll take the time of printing and recycling information.

Second, printing information interpretation:

Third, some common JVM parameters

-xx:+printgctimestamps:

Print this garbage collection time that the JVM started running

-xx:+printgcdeatils

Print details about garbage collection

-xloggc:<filename>

Output garbage collection information to a specified file

-xx:+printgcdatestamps

You need to print a timestamp option in the form of a calendar

-xx:+printgcapplicationstoppedtime

-xx:+printgcapplicationconcurrenttime

The time that the printing application blocked due to the VM Security point Operation and the elapsed time between the two security point operations

-xx:+printsafepointstatistics

The safe points of garbage collection can be separated from other safe points

Reference: The authoritative guide to Java performance optimization

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JVM command-line options and GC logs