if (osBean instanceof com.sun.management.OperatingSystemMXBean) { com.sun.management.OperatingSystemMXBean sunOsBean = (com.sun.management.OperatingSystemMXBean) osBean; double cpuUsage = sunOsBean.getSystemCpu
OperatingSystemMXBean operatingSystemMXBean=ManagementFactory.getOperatingSystemMXBean(); String osJson=JSON.toJSONString(operatingSystemMXBean);//System.out.println("osJson is " + osJson);JSONObject jsonObject =JSON.parseObject(osJson);doubleprocessCpuLoad = jsonObject.getDouble("processCpuLoad") *...
CpuInfo ||--o OperatingSystemMXBean : "get" OperatingSystemMXBean { int getAvailableProcessors() "获取CPU核心数" String getArch() "获取CPU架构" String getName() "获取CPU名称" double getSystemCpuLoad() "获取CPU使用率" } 结尾 通过上述步骤和代码示例,你应该能够使用Java获取系统的CPU信息了。这...
我们可以使用OperatingSystemMXBean接口中的getSystemCpuLoad()方法获取CPU的占用率。然后,我们可以通过以下代码计算CPU的空闲时间: doubleidleTime=operatingSystemMXBean.getSystemCpuLoad()*1000; 1. 这里,getSystemCpuLoad()方法返回的是一个0到1之间的值,表示CPU的占用率。我们将其乘以1000,以毫秒为单位来计算CPU...
然后,我们可以编写以下代码来获取CPU负载: importoshi.SystemInfo;importoshi.hardware.CentralProcessor;publicclassCPULoadCheckerWithOshi{publicstaticvoidmain(String[] args){SystemInfosi=newSystemInfo();CentralProcessorcpu=si.getHardware().getProcessor();// 获取CPU的最近负载(过去1秒、5秒和15秒的负载)double[...
getStartTime())); result.put("程序更新时间",new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(ManagementFactory.getRuntimeMXBean().getUptime())); CentralProcessor processor =systemInfo.getHardware().getProcessor(); long[]prevTicks =processor.getSystemCpuLoadTicks(); long[]ticks...
double waitRate = cSys * 1.0 / totalCpu; double idleRate = cSys * 1.0 / totalCpu; double betweenRate = processor.getSystemCpuLoadBetweenTicks(); double cpuLoad = processor.getSystemCpuLoad(); System.out.println("cpu系统使用率:" + new DecimalFormat("#.##%").format(sysRate)); ...
<version>5.2.0</version> </dependency> JNA版本信息 2.1 获取CPU核数 oshi中的CentralProcessor进行获取。获取CPU物理可用的核数,如果有开启超频,那么获取的CPU核数可能会大于物理核数。 publicstaticvoidgetCpuCount(){try{// 获取SystemInfo实例SystemInfosystemInfo...
When I pull up the Activity Monitor, I notice the "java" process is soaking up 100% or more of the CPU. The CPU usage moves around, but on average hovers between 97% and 100% using one or both of the processors. I checked the hard drive and it's ok...minimal disk activity. ...
并发(Concurrent):指用户线程与垃圾收集线程同时执行(但不一定是并行的,可能会交替执行),用户程序在继续运行,而垃圾收集程序运行于另一个CPU上。 Minor GC 和 Full GC 新生代GC(Minor GC):指发生在新生代的垃圾收集动作,因为Java对象大多都具备朝生夕灭的特性,所以Minor GC非常频繁,一般回收速度也比较快。 老年...