项目地址:https://github.com/yxkong/agent
目前已实现对线程池、jvm的监控;
主要是在线程池创建时,对线程池进行增强,将线程池强引用到bootstrap-load-client-0.1.jar中的ThreadPoolMonitorData里。 使用此包的前提是线程池是固定资源,启动后不会销毁,如果动态创建线程池并销毁,需要调用shutdown或者shutdowNow,这块已实现对对强引用的解除,否则因为这块强引用导致资源无法释放,没法被gc回收
bootstrap-load-client
此模块需要打成jar包
-
引入项目中;
-
配置bootstrap ClassLoader加载
monitor-agent
此模块需要打成jar包,当一个agent使用 启动参数配置
-javaagent:/Users/yxk/git/agent/monitor-agent/target/monitor-agent-0.1.jar=127.0.0.1,8888 -Xbootclasspath/a:/Users/yxk/git/agent/bootstrap-load-client/target/bootstrap-load-client-0.1.jar
说明:
-
monitor-agent-0.1.jar 为agent包
-
bootstrap-load-client-0.1.jar 为Bootstrap ClassLoader加载的包,在增强ThreadPoolExecutor的时候,必须是启动类加载
com.yxkong.agent目录结构
ByteBuddyAgent 为主类
-
增强ThreadPoolExecutor类
-
初始化httpServer
advice 为 具体的增强
dto 为传输包装
httpserver
-
实现了http服务(参考zabbix的jmx_exporter)
-
功能服务必须继承Collector,同时在构造方法里设置methodName,
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实现collect 接口,就是具体要干的事,以及对应的返回参数
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在ByteBuddyAgent.initHttpServer()方法中实例化一个对象并且register() 如 new ThreadPoolCollector().register();
主要实现功能
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JVMCollector jvm的监控
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StackCollector 当前栈信息收集
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ThreadPoolCollector 线程池收集
-
ThreadPoolModify 线程池部分信息修改
注意事项:
-
线程池的ThreadFactory最好使用bootstrap-load-client-0.1.jar的NamedThreadFactory
-
否则无法获取线程池的名称和描述
-
针对没有使用NamedThreadFactory的ThreadPoolExecutor使用对象的hashCode做为key
测试
MonitorTest 控制台输出:
获取ThreadPoolMonitorData的类加载器:null #bootstrap classLoader 被屏蔽了,返回的是null
获取ThreadPoolMonitorData收集的线程池:{}
获取ThreadPoolMonitor的类加载器:sun.misc.Launcher$AppClassLoader@18b4aac2
线程池pool执行中1:biz-pool-3-thread-1
线程池pool执行中2:biz-pool-3-thread-2
线程池pool执行中3:biz-pool-3-thread-3
线程池executorService执行中1:pool-1-thread-1
线程池启动完再获取收集的线程池:
{"616881582":{"executor":{"activeCount":0,"threadFactory":{},"largestPoolSize":1,"poolSize":1,"taskCount":1,"rejectedExecutionHandler":{},"corePoolSize":0,"completedTaskCount":1,"terminating":false,"maximumPoolSize":2147483647,"queue":[],"shutdown":false,"terminated":false},"name":"616881582","desc":"未使用提供的NamedThreadFactory"},"biz":{"executor":{"activeCount":0,"threadFactory":{"name":"biz","desc":"业务执行线程池"},"largestPoolSize":3,"poolSize":3,"taskCount":3,"rejectedExecutionHandler":{},"corePoolSize":5,"completedTaskCount":3,"terminating":false,"maximumPoolSize":10,"queue":[],"shutdown":false,"terminated":false},"name":"biz","desc":"业务执行线程池"}}
jvm 数据获取 http://10.214.12.38:8090/jvm
{
"data": {
"JVM": {
"specVersion": "1.8",
"unLoadedClassCount": 0,
"javaVersion": "1.8.0_281",
"jitName": "HotSpot 64-Bit Tiered Compilers",
"jitTime": 1,
"pid": "10866",
"totalLoadedClassCount": 3038,
"version": "25.281-b09",
"specVendor": "Oracle Corporation",
"specName": "Java Virtual Machine Specification",
"loadedClassCount": 3038,
"vendor": "Oracle Corporation",
"name": "Java HotSpot(TM) 64-Bit Server VM",
"startTime": 1618885248,
"runTime": 19
},
"memory": {
"oldGenMemoryUsage: ": {
"init": 179306496,
"usedPercent": 5.7213474E-6,
"committed": 179306496,
"max": 2863661056,
"used": 16384
},
"permGenMemoryUsage: ": {
"init": 0,
"usedPercent": 0.0,
"committed": 16646144,
"max": -1,
"used": 15378040
},
"permGenMemoryPeakUsage: ": {
"init": 0,
"usedPercent": 0.0,
"committed": 16646144,
"max": -1,
"used": 15378072
},
"nonHeapMemoryUsage": {
"init": 2555904,
"usedPercent": 0.0,
"committed": 23134208,
"max": -1,
"used": 21547992
},
"edenSpaceMemoryUsage": {
"init": 67108864,
"usedPercent": 0.011954648,
"committed": 67108864,
"max": 1409286144,
"used": 16847520
},
"codeCacheMemoryUsage: ": {
"init": 2555904,
"usedPercent": 0.015820567,
"committed": 3997696,
"max": 251658240,
"used": 3981376
},
"heapMemoryUsage": {
"init": 268435456,
"usedPercent": 0.0064246687,
"committed": 257425408,
"max": 3817865216,
"used": 24528520
},
"oldGenMemoryPeakUsage: ": {
"init": 179306496,
"usedPercent": 5.7213474E-6,
"committed": 179306496,
"max": 2863661056,
"used": 16384
},
"codeCacheMemoryPeakUsage: ": {
"init": 2555904,
"usedPercent": 0.015820567,
"committed": 3997696,
"max": 251658240,
"used": 3981376
},
"survivorSpaceMemoryUsage: ": {
"init": 11010048,
"usedPercent": 0.72662354,
"committed": 11010048,
"max": 11010048,
"used": 8000160
},
"survivorSpaceMemoryPeakUsage: ": {
"init": 11010048,
"usedPercent": 0.72662354,
"committed": 11010048,
"max": 11010048,
"used": 8000160
},
"edenSpaceMemoryPeakUsage": {
"init": 67108864,
"usedPercent": 0.04761905,
"committed": 67108864,
"max": 1409286144,
"used": 67108864
}
},
"thread": {
"threadCount": 13,
"resetPeakThreadCount": 13,
"daemonThreadCount": 5,
"peakThreadCount": 13
},
"GC": {
"fullGCName": "PS MarkSweep",
"YGCTime": 5,
"fullGCTime": 0,
"fullGCCount": 0,
"YGCCount": 1,
"YoungGCName": "PS Scavenge"
}
},
"message": "执行成功!",
"status": "1",
"timestamp": 1618885268328
}
线程池数据获取 http://10.214.12.38:8090/threadPool
{
"message": "执行成功!",
"status": "1",
"data": {
"biz": {
"name": "biz",
"desc": "业务执行线程池",
"activeCount": 0,
"largestPoolSize": 3,
"poolSize": 3,
"taskCount": 3,
"corePoolSize": 5,
"completedTaskCount": 3,
"terminating": false,
"maximumPoolSize": 10,
"queueSize": 0,
"shutdown": false,
"terminated": false
},
"java.util.concurrent.ThreadPoolExecutor@892965953": {
"name": "java.util.concurrent.ThreadPoolExecutor@892965953",
"desc": "未使用提供的NamedThreadFactory",
"activeCount": 0,
"largestPoolSize": 1,
"poolSize": 1,
"taskCount": 1,
"corePoolSize": 0,
"completedTaskCount": 1,
"terminating": false,
"maximumPoolSize": 2147483647,
"queueSize": 0,
"shutdown": false,
"terminated": false
},
"execute-pool-1": {
"name": "execute-pool-1",
"desc": "default",
"activeCount": 1,
"largestPoolSize": 1,
"poolSize": 1,
"taskCount": 1,
"corePoolSize": 5,
"completedTaskCount": 0,
"terminating": false,
"maximumPoolSize": 5,
"queueSize": 0,
"shutdown": false,
"terminated": false
}
},
"timestamp": 1618917221721
}
线程池修改 http://10.214.12.38:8090/threadPool/modify?key=execute-pool-1&coreSize=3&maximumPoolSize=100
{
"message": "执行成功!",
"status": "1",
"data": {
"name": "execute-pool-1",
"desc": "default",
"activeCount": 3,
"largestPoolSize": 3,
"poolSize": 3,
"taskCount": 3,
"corePoolSize": 3,
"completedTaskCount": 0,
"terminating": false,
"maximumPoolSize": 100,
"queueSize": 0,
"shutdown": false,
"terminated": false
},
"timestamp": 1618917392869
}
启动命令:
java -Xbootclasspath/a:/Users/yxk/git/agent/bootstrap-load-client/target/bootstrap-load-client-0.1.jar -javaagent:/Users/yxk/git/agent/monitor-agent/target/monitor-agent-0.1.jar -jar springboot-test-2.3.2.RELEASE.jar
使用zabbix或者别的监控工具,将对应的接口配置进去,完全可以实现对线程池的监控
项目地址:https://github.com/yxkong/agent
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