1先来一段飙升代码
public class FindJavaThreadInTaskManager {
public static void main(String[] args) {
Thread thread = new Thread(new Worker());
thread.start();
}
static class Worker implements Runnable {
@Override
public void run() {
while (true) {
System.out.println("Thread Name:" + Thread.currentThread().getName());
}
}
}
}
2 、将程序打成jar包 t1.jar
3 、放到linux服务器上运行jar包方法
java -cp t1.jar test1.FindJavaThreadInTaskManager
4、找到CPU利用率持续比较高的进程，获取进程号，此处PID为5735
5、top -Hp 5735
6、将pid转成16进制
printf %x 5747 =======》1673
7、查看当前线程的堆栈信息
./jstack 5735 |grep -A 200 1673
