获取机器的使用内存

Author: yunheli

platform-agent/src/main/java/com/flow/platform/agent/CmdManager.java

@@ -28,6 +28,8 @@
 import com.flow.platform.util.Logger;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
+import com.sun.management.OperatingSystemMXBean;
+import java.lang.management.ManagementFactory;
 import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -236,16 +238,15 @@ public void run() {
     private String collectionAgentInfo() {
         String javaVersion = System.getProperty("java.version");
         String osName = System.getProperty("os.name");
-        Runtime runtime = Runtime.getRuntime();
-        int kb = 1024;
-        long total = runtime.totalMemory();
-        long free = runtime.freeMemory();
+        OperatingSystemMXBean os = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
+        long total = os.getTotalPhysicalMemorySize();
+        long free = os.getFreePhysicalMemorySize();
         long use = total - free;
         Map<String, String> dic = new HashMap<>(7);
         dic.put("javaVersion", javaVersion);
         dic.put("osName", osName);
-        dic.put("totalMemory", total / kb + "MB");
-        dic.put("useMemory", use / kb + "MB");
+        dic.put("totalMemory", Long.toString(total));
+        dic.put("useMemory", Long.toString(use));
         dic.put("zone", Config.zone());
         dic.put("name", Config.name());
         dic.put("agentVersion", Config.getProperty("version"));