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How to analyze JVM tuning, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Do you know the concept of JVM tuning? let's share it with you. First of all, let's take a look at the JVM tuning tools. There are mainly three kinds of Jconsole,jProfile,VisualVM. For example, the Jconsole:jdk comes with simple functions, but it can be used when the system has a certain load. There is a very detailed tracking of garbage collection algorithms.

JVM tuning tool

Jconsole,jProfile,VisualVM

◆ Jconsole:jdk comes with simple function, but it can be used when the system has a certain load. There is a very detailed tracking of garbage collection algorithms.

◆ JProfiler: commercial software, you need to pay for it. Powerful. For more information, please see here.

◆ VisualVM:JDK comes with powerful features, similar to JProfiler. Recommend.

How to tune JVM

Observe memory release, collection class check, object tree

The above JVM tuning tools provide powerful features, but generally fall into the following categories

JVM tuning heap information view

Can view heap space allocation (younger generation, older generation, persistent generation allocation)

Provide instant garbage collection

JVM-optimized garbage monitoring (monitoring recycling for a long time)

View in-heap classes, object information: quantity, type, etc.

View object references tuned by JVM

With the ability to view heap information, we can generally solve the following problems smoothly:

-- whether the size division of the older generation and the younger generation is reasonable

-- memory leak

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