# There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (mmap) failed to map 1786867712 bytes for committing reserved memory. # Possible reasons: # The system is out of physical RAM or swap space # In 32 bit mode, the process size limit was hit # Possible solutions: # Reduce memory load on the system # Increase physical memory or swap space # Check if swap backing store is full # Use 64 bit Java on a 64 bit OS # Decrease Java heap size (-Xmx/-Xms) # Decrease number of Java threads # Decrease Java thread stack sizes (-Xss) # Set larger code cache with -XX:ReservedCodeCacheSize= # This output file may be truncated or incomplete. # # Out of Memory Error (os_linux.cpp:2673), pid=28610, tid=139813184919296 # # JRE version: Java(TM) SE Runtime Environment (8.0_40-b26) (build 1.8.0_40-b26) # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.40-b25 mixed mode linux-amd64 compressed oops) # 

 total used free shared buffers cached Mem:      984 119 864 0 2 20 -/+         buffers/cache: 97 886 Swap:      2044 45 1999

package org.hejinbin.memory.test;import java.io.IOException;/** * 用于演示内存不足导致JAVA进程退出, 注意:输入的size勿导致超出int （1024 * 1024 * size） *  * @author 何锦彬 QQ 277803242（包子） 2016.12.29 */public class Test {    public static void main(String[] args) throws IOException, InterruptedException {        new Thread(new Runnable() {            public void run() {                try {                    //接收测试内存的大小,单位m                    byte[] byteSize = new byte[50];                    System.out.print("input want to allocation memory:");                    int temp = System.in.read(byteSize);                    String sizeStr = new String(byteSize, 0, temp);                    int size = Integer.parseInt(sizeStr.trim());                    System.out.println(1024 * 1024 * size);                    byte[] bt = new byte[1024 * 1024 * size];                    System.out.println("succ..allocation: " + size + "m");                    //阻30分,防止垃圾回收                    Thread.sleep(1000 * 60 * 30);                } catch (Exception e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }).start();        while (true) {            //1分钟后报告            Thread.sleep(1000 * 60);            System.out.println(Thread.currentThread().getId() + ": i‘m alive");        }    }}