```java;gutter:true;
package storm.scheduler;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadMXBean;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import cpuinfo.CPUInfo;
/*
* 负载监视器
* @author wxweven
/
public class LoadMonitor {
private static final int SECS_TO_NANOSECS = 1000000000;
private static LoadMonitor instance = null;
private final long cpuSpeed; // Hz