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README
Apache-2.0

license JDK maven

Jvmm是一个同时支持操作系统监控和Java虚拟机监控的工具,提供有丰富的监控功能:OS监控(内存状态、CPU负载、磁盘IO吞吐率、磁盘健康状态、网卡IO等)、JVM监控(内存、线程、GC、类加载器等),还提供生成火焰图、Java代码热更、反编译功能,支持以服务形式对外提供接口(http、哨兵等)。适合用于服务健康监控、线上调优、排查问题、性能测试等场景。

功能支持

  • 支持操作系统监控:内存状态、CPU负载、磁盘IO及吞吐率、磁盘健康状态、网卡信息、网卡IO
  • 支持Java虚拟机监控:GC信息、内存使用情况、内存池信息、类加载器、线程堆栈
  • 支持生成火焰图(采样事件包括CPU、内存分配、线程栈、Java方法调用栈等)
  • 支持Java代码反编译生成
  • 支持Java代码热更新(可指定ClassLoader)
  • 支持远程执行GC
  • 支持远程执行JDK自带工具命令,包含但不限于jps、jstat、jstack、jinfo、jmap、jcmd等
  • 提供客户端交互工具,支持跨进程attach和远程连接功能
  • 支持三种服务模式(可同时开启多个服务):
    • jvmm服务:独有RPC协议,需使用jvmm客户端远程连接调用,安全可靠
    • http服务:提供Http接口,不限开发语言远程调用
    • 哨兵服务:定时采集数据并上报给订阅者
  • 提供多种方式使用:客户端工具跨进程attach启动、添加Java Agent启动、server独立运行启动、项目中Maven / Gradle引用server / core依赖进行自定义开发
  • 支持 JDK 8+
  • 支持 Linux/Mac/Windows

快速使用

将Jvmm压缩包解压,请前往releases下载最新版的jvmm,然后运行

java -jar jvmm.jar

或直接在你的项目中使用

<dependencies>
  <dependency>
    <groupId>io.github.tzfun.jvmm</groupId>
    <artifactId>jvmm-server</artifactId>
    <version>${jvmm-version}</version>
  </dependency>

<!-- Jvmm的SLF4J实现,如果你的项目中有默认实现,可以去掉此依赖 -->
  <dependency>
    <groupId>io.github.tzfun.jvmm</groupId>
    <artifactId>jvmm-logger</artifactId>
    <version>${jvmm-version}</version>
  </dependency>  
</dependencies>
public class JvmmServerBootDemo {
    public static void main(String[] args) {
        ServerBootstrap.getInstance().start();
    }
}

使用文档

示例

在这里提供了一些简单的代码调用示例

生成火焰图示例

profiler.png

Dashboard应用示例

dashboard

联系作者

在使用过程中遇到任何问题,或者对本项目有独特的见解或建议,欢迎提交issue或私信我

邮箱:beifengtz@qq.com

微信:beifeng-tz(添加请备注jvmm

问题解决

1.kernel.perf_event_paranoid权限开关

如果你在生成火焰图时提示No access to perf events. Try --fdtransfer or --all-user option or 'sysctl kernel.perf_event_paranoid=1',原因是系统内核默认禁止了检测系统性能,你需要开启这个选项。

sudo systcl -w kernel.perf_event_paranoid=1

或者修改sysctl文件

sudo sh -c 'echo "kernel.perf_event_paranoid=1" >> /etc/sysctl.conf'
sudo sysctl -p

2. 启动server时报错 java.lang.reflect.InaccessibleObjectException

如果你在启动 jvmm-server.jar 时报下面错,原因是你使用了 JDK 9及以上版本,在JDK 9+开始Java禁止了动态加载依赖。

java.lang.reflect.InaccessibleObjectException: Unable to make field final jdk.internal.loader.URLClassPath jdk.internal.loader.ClassLoaders$AppClassLoader.ucp accessible: module java.base does not "opens jdk.internal.loader" to unnamed module @2d127a61

解决办法:添加下面两个虚拟机参数

# JDK 9+开始不允许动态加载依赖,需要设置以下两个虚拟机参数
# --add-opens java.base/jdk.internal.loader=ALL-UNNAMED
# --add-opens jdk.zipfs/jdk.nio.zipfs=ALL-UNNAMED
java -jar --add-opens java.base/jdk.internal.loader=ALL-UNNAMED --add-opens jdk.zipfs/jdk.nio.zipfs=ALL-UNNAMED jvmm-server.jar ./config.yml

感谢

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简介

Jvmm是一个同时支持操作系统监控和Java虚拟机监控的工具,提供有丰富的监控功能:OS监控(内存状态、CPU负载、磁盘IO吞吐率、磁盘健康状态、网卡IO等)、JVM监控(内存、线程、GC、类加载器等),还提供生成火焰图、Java代码热更、反编译功能,支持以服务形式对外提供接口(http、哨兵等)。适合用于服务健康监控、线上调优、排查问题、性能测试等场景。 展开 收起
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