diff --git a/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AlgorithmEventRecorder.java b/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AlgorithmEventRecorder.java
index 2020d949..d4387764 100644
--- a/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AlgorithmEventRecorder.java
+++ b/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AlgorithmEventRecorder.java
@@ -41,10 +41,12 @@ import org.graphstream.graph.implementations.MultiGraph;
 import org.graphstream.stream.file.FileSinkDGS;
 
 import java.io.File;
+import java.io.FileOutputStream;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.Collection;
 import java.util.List;
+import java.util.zip.GZIPOutputStream;
 
 
 public class AlgorithmEventRecorder implements RuinListener, IterationStartsListener, InsertionStartsListener, BeforeJobInsertionListener, InsertionEndsListener, AlgorithmEndsListener {
@@ -58,10 +60,6 @@ public class AlgorithmEventRecorder implements RuinListener, IterationStartsList
         rec.finish();
     }
 
-    public static enum RecordPolicy {
-        RECORD_AND_WRITE
-    }
-
     public static final int BEFORE_RUIN_RENDER_SOLUTION = 2;
 
     public static final int RUIN = 0;
@@ -78,6 +76,10 @@ public class AlgorithmEventRecorder implements RuinListener, IterationStartsList
 
     private FileSinkDGS fileSink;
 
+    private FileOutputStream fos;
+
+    private GZIPOutputStream gzipOs;
+
     private int start_recording_at = 0;
 
     private int end_recording_at = Integer.MAX_VALUE;
@@ -86,13 +88,19 @@ public class AlgorithmEventRecorder implements RuinListener, IterationStartsList
 
     private VehicleRoutingProblem vrp;
 
-    public AlgorithmEventRecorder(VehicleRoutingProblem vrp, File outfile) {
+    public AlgorithmEventRecorder(VehicleRoutingProblem vrp, File dgsFile) {
         this.vrp = vrp;
         graph = new MultiGraph("g");
         try {
-            writer = new FileWriter(outfile);
+            fos = new FileOutputStream(dgsFile);
             fileSink = new FileSinkDGS();
-            fileSink.begin(writer);
+            if(dgsFile.getName().endsWith("gz")){
+                gzipOs = new GZIPOutputStream(fos);
+                fileSink.begin(gzipOs);
+            }
+            else{
+                fileSink.begin(fos);
+            }
             graph.addSink(fileSink);
         } catch (IOException e) {
             e.printStackTrace();
@@ -100,9 +108,9 @@ public class AlgorithmEventRecorder implements RuinListener, IterationStartsList
         initialiseGraph(vrp);
     }
 
-    public AlgorithmEventRecorder(VehicleRoutingProblem vrp, File outfile, boolean renderShipments) {
+    public AlgorithmEventRecorder(VehicleRoutingProblem vrp, File dgsFile, boolean renderShipments) {
         this.renderShipments = renderShipments;
-        new AlgorithmEventRecorder(vrp,outfile);
+        new AlgorithmEventRecorder(vrp,dgsFile);
     }
 
     public void setRecordingRange(int startIteration, int endIteration){
@@ -110,23 +118,6 @@ public class AlgorithmEventRecorder implements RuinListener, IterationStartsList
         this.end_recording_at = endIteration;
     }
 
-    public AlgorithmEventRecorder(VehicleRoutingProblem vrp, VehicleRoutingProblemSolution initialSolution, File outfile) {
-//        this.outfile = outfile;
-//        this.vrp = vrp;
-//        graph = new MultiGraph("g");
-//        try {
-//            writer = new FileWriter(outfile);
-//            writeHead();
-//        } catch (IOException e) {
-//            e.printStackTrace();
-//        }
-//        initialiseGraph(vrp,initialSolution);
-    }
-
-    private void initialiseGraph(VehicleRoutingProblem vrp, VehicleRoutingProblemSolution initialSolution) {
-
-    }
-
     @Override
     public void ruinStarts(Collection<VehicleRoute> routes) {
         if(!record()) return;
@@ -292,7 +283,8 @@ public class AlgorithmEventRecorder implements RuinListener, IterationStartsList
     private void finish() {
         try {
             fileSink.end();
-            writer.close();
+            fos.close();
+            if(gzipOs != null) gzipOs.close();
         } catch (IOException e) {
             e.printStackTrace();
         }
diff --git a/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AnotherGraphTest.java b/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AnotherGraphTest.java
deleted file mode 100644
index 5f0eb3cd..00000000
--- a/jsprit-analysis/src/main/java/jsprit/analysis/toolbox/AnotherGraphTest.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package jsprit.analysis.toolbox;
-
-import jsprit.core.algorithm.VehicleRoutingAlgorithm;
-import jsprit.core.algorithm.box.GreedySchrimpfFactory;
-import jsprit.core.problem.VehicleRoutingProblem;
-import jsprit.core.problem.io.VrpXMLReader;
-
-import java.io.File;
-
-/**
- * Created by stefan on 14.11.14.
- */
-public class AnotherGraphTest {
-
-    public static void main(String[] args) {
-        VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
-        new VrpXMLReader(vrpBuilder).read("/Users/stefan/Documents/git-repositories/jsprit/jsprit-examples/input/cordeau01.xml");
-        VehicleRoutingProblem vrp = vrpBuilder.build();
-
-//        GraphStreamEventWriter eventWriter = new GraphStreamEventWriter(new File("output/events.txt"));
-        VehicleRoutingAlgorithm vra = new GreedySchrimpfFactory().createAlgorithm(vrp);
-//        vra.addListener(eventWriter);
-
-        vra.searchSolutions();
-
-    }
-}