Java应用程序中的垃圾回收

Question

I've searched a lot on how to configure the garbage collector in a Java application, but found answers on GC tuning and using some -XX arguments.

There is also no information on where to use these -XX arguments in Java app.

How do I configure this?

Answer 1

The simple answer is that if you don't need to tune your GC's performance, you don't need to specify any GC options at all.

The Java JVM is capable of adjusting the GC's behavior reasonably well to meet the runtime needs of typical Java applications. If it is doing a good job, you don't need any GC options at all. If not, then ¹ you tune the GC

Indeed, I would say that (with the possible exception of -Xmx ) all GC related JVM options are GC tuning options. So the (Oracle or Android or ... pick your vendor) documentation on Java GC tuning is precisely where you should start looking for advice on GC options.

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^{1 - And not before!}