死磕内存篇 --- JAVA进程和linux内存间的大小关系

package org.hjb.test; public class TestOnly {
public static void main(String[] args) { System.out.println("sleep ..");
try {
Thread.sleep(10000000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
root S 0.0 1.0 :00.27 java

27278 root 20 0 2258424 31656 13776 S 0.0 0.8 0:00.16 java

root S 0.0 0.9 :00.10 java

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
root S 0.0 0.9 :00.21 java

package org.hjb.test;
public class TestOnly {
public static void main(String[] args) { System.out.println("sleep ..");
try {
byte[] buf = new byte[1024 * 1024 * 1024]; //1g 增大其内存
Thread.sleep(10000000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
root .034g S 0.0 26.8 :00.89 java