下面是一个使用mermaid语法标识的状态图,展示了查看进程内存大小的流程: StartGetMemoryMXBeanGetHeapMemoryUsageGetNonHeapMemoryUsagePrintMemoryUsage 参考资料 [MemoryMXBean - Java Doc]( [ManagementFactory - Java Doc]( [How to get current memory usage in Jav...
long usedMemorySize = memoryUsage.getUsed(); //已使用的内存 方式二：Runtime rt = Runtime.getRuntime();long totalMemorySize = rt.totalMemory(); //初始的总内存 long maxMemorySiz = t.maxMemory(); //最大可用内存 long freeMemorySize = rt.freeMemory(); //当前可用内存 需要说明...
publicclassMemoryUsageExample{publicstaticvoidmain(String[]args){// 步骤1: 获取当前线程的引用ThreadcurrentThread=Thread.currentThread();// 步骤2: 获取线程的内存使用情况Runtimeruntime=Runtime.getRuntime();// 步骤3: 计算总内存和已使用内存longtotalMemory=runtime.totalMemory();longusedMemory=totalMemor...
%ni：表示用户空间且通过nice调度过的程序的cpu使用率。 %id：空闲cpu %wa：cpu运行时在等待io的...
VIRT:virtual memory usage虚拟内存; 进程“需要的”虚拟内存大小,包括进程使用的库、代码、数据等; 假如进程申请100m的内存,但实际只使用了10m,那么它会增长100m,而不是实际的使用量; RES:resident memory usage常驻内存; 进程当前使用的内存大小,但不包括swap out; ...
private longfreeMemory; private longmaxMemory; privateString osName; private longtotalMemorySize; private longfreePhysicalMemorySize; private longusedMemory; private inttotalThread; privatedouble cpuRatio; public longgetFreeMemory() { return freeMemory; ...
log.info("开始收集cpu使用率");floatcpuUsage = 0; Process pro1,pro2; Runtime r=Runtime.getRuntime();try{ String command= "cat /proc/stat";//第一次采集CPU时间longstartTime =System.currentTimeMillis(); pro1=r.exec(command);
一、javah命令(C Header and Stub File Generator) 二、jps命令(JavaVirtual Machine Process Status Tool) 三、jstack命令(Java Stack Trace) 四、jstat命令(Java Virtual Machine Statistics Monitoring Tool) 五、jmap命令(Java Memory Map) 六、jinfo命令(Java Configuration Info) 七、jconsole命令(Java Monitoring...
import java.lang.management.MemoryUsage; import java.lang.management.OperatingSystemMXBean; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; public class Main { public static void main(String[] args) {
Build native executables that help applications start up fast, reduce memory usage, and save hosting costs. Learn more about GraalVM Java Management Service JMS Advance features help administrators gain additional insights into Java workloads. Analyze usage, vulnerabilities, and impact from Cryptographic ...