Add a disk stat.

.gitignore

@@ -1,6 +1,7 @@
-# Ignore Gradle project-specific cache directory
-.gradle
 .idea
-
-# Ignore Gradle build output directory
+.settings
+.classpath
+.project
+.gradle
 build
+bin

agent/src/main/java/org/sysmon/agent/beans/DiskBean.java

@@ -78,8 +78,10 @@ public class DiskBean implements MetricBean {
                 continue;
             }
 
+            long timeSpendDoingIo = curStat.timeSpentOnIo - preStat.timeSpentOnIo;
+
             // TODO: Calculate differences for wanted disk io stats
-            measurementList.add(new MetricMeasurement(curStat.getDevice(), 0));
+            measurementList.add(new MetricMeasurement(curStat.getDevice() + "-iotime", timeSpendDoingIo));
 
         }