자바 cpu 사용률 측정하기

 

 

package test;

import com.jezhumble.javasysmon.*;

import com.jezhumble.javasysmon.JavaSysMon;

public class eval_utilization {

static JavaSysMon monitor = new JavaSysMon();

static CpuTimes cpu_snapshot_start;

static long user_clock_start = 0;

static long sys_clock_start = 0;

static long idle_clock_start = 0;

static long cpu_clock_start = 0;

static long clock_start = 0;

static CpuTimes cpu_snapshot_end;

static long user_clock_end = 0;

static long sys_clock_end = 0;

static long idle_clock_end = 0;

static long cpu_clock_end = 0;

static long clock_end = 0;

static float average_utilization = 0.0f;

public static void start_clock(){

System.out.println("[java] eval utilization start");

cpu_snapshot_start = monitor.cpuTimes();

user_clock_start = monitor.cpuTimes().getUserMillis();

sys_clock_start = monitor.cpuTimes().getSystemMillis();

idle_clock_start = monitor.cpuTimes().getIdleMillis();

cpu_clock_start = monitor.cpuTimes().getTotalMillis();

clock_start = System.currentTimeMillis();

}

public static void end_clock(){

System.out.println("[java] eval utilization end");

cpu_snapshot_end = monitor.cpuTimes();

user_clock_end = monitor.cpuTimes().getUserMillis();

sys_clock_end = monitor.cpuTimes().getSystemMillis();

idle_clock_end = monitor.cpuTimes().getIdleMillis();

cpu_clock_end = monitor.cpuTimes().getTotalMillis();

clock_end = System.currentTimeMillis();

}

public static void print_clock(){

System.out.println("[java] eval utilization print");

average_utilization = monitor.cpuTimes().getCpuUsage(cpu_snapshot_start);

System.out.println("Average_utilization,"+average_utilization/1000.0f);

System.out.println("User_time,"+(user_clock_end-user_clock_start)/1000.0f);

System.out.println("Sys_time,"+(sys_clock_end-sys_clock_start)/1000.0f);

System.out.println("idle_time,"+(idle_clock_end-idle_clock_start)/1000.0f);

System.out.println("cpu_time,"+(cpu_clock_end-cpu_clock_start)/1000.0f);

}

}

http://stackoverflow.com/questions/2062440/java-cpu-usage-monitoring

http://stackoverflow.com/questions/24426827/how-to-show-the-cpu-and-disk-usage-in-a-jprogressbar

http://jezhumble.github.io/javasysmon/com/jezhumble/javasysmon/JavaSysMon.html