diff --git a/Testing/extractDb.py b/Testing/extractDb.py
index 5ab2ce9d..d6179c15 100755
--- a/Testing/extractDb.py
+++ b/Testing/extractDb.py
@@ -828,7 +828,10 @@ def formatPerfRatio(s):
       if args.clamp:
          if t > args.clampval:
             t = args.clampval
-      result.append(("%.3f" % t))
+      if t < 0.0:
+        result.append("NA")
+      else:
+        result.append(("%.3f" % t))
     else:
       result.append(s)
 
@@ -854,7 +857,7 @@ def addRatioTable(cols,params,data,section,testNames,byd):
 
       if byd:
         data=ref.pivot_table(index=toSort, columns=['type'], 
-           values=["ratio"], aggfunc='first')
+           values=["ratio"], aggfunc='first',fill_value=-1.0)
       else:
          data=ref.pivot_table(index=toSort, columns=['core'], 
            values=["ratio"], aggfunc='first')
@@ -868,6 +871,14 @@ def addRatioTable(cols,params,data,section,testNames,byd):
 
       dataTable=Table(params,cores)
 
+      if args.g:
+         if type(dataForFunc) is not pd.DataFrame:
+            sec=Section("Graph")
+            testSection.addSection(sec)
+
+            barChart=BarChart(zip(cores,dataForFunc))
+            sec.addContent(barChart)
+
       ratioSection.addContent(Text("A bigger ratio means the reference core \"%s\" is better" % refCoreName))
 
       ratioSection.addContent(dataTable)