jstat使用浅谈

最新推荐文章于 2024-08-17 20:11:35 发布

iteye_831

最新推荐文章于 2024-08-17 20:11:35 发布

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分类专栏： javase 文章标签： Oracle JDK HTML

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本文介绍JDK自带的jstat工具，该工具可用于收集Java应用程序的性能数据，包括类加载器行为、HotSpot JIT编译器统计信息、垃圾回收堆行为等。通过这些统计数据，开发者可以对Java应用进行性能调优。

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jstat是jdk自带的一个命令，在jdk安装目录bin目录下，使用该工具可以进行java一些性能调优
Option	Displays...
class	Statistics on the behavior of the class loader.
compiler	Statistics of the behavior of the HotSpot Just-in-Time compiler.
gc	Statistics of the behavior of the garbage collected heap.
gccapacity	Statistics of the capacities of the generations and their corresponding spaces.
gccause	Summary of garbage collection statistics (same as -gcutil), with the cause of the last and current (if applicable) garbage collection events.
gcnew	Statistics of the behavior of the new generation.
gcnewcapacity	Statistics of the sizes of the new generations and its corresponding spaces.
gcold	Statistics of the behavior of the old and permanent generations.
gcoldcapacity	Statistics of the sizes of the old generation.
gcpermcapacity	Statistics of the sizes of the permanent generation.
gcutil	Summary of garbage collection statistics.
printcompilation	HotSpot compilation method statistics.

http://download.oracle.com/javase/1.5.0/docs/tooldocs/share/jstat.html