--- old/application/org.openjdk.jmc.flightrecorder.ui/src/main/java/org/openjdk/jmc/flightrecorder/ui/common/DataPageToolkit.java	2019-04-05 15:21:45.547280799 -0400
+++ new/application/org.openjdk.jmc.flightrecorder.ui/src/main/java/org/openjdk/jmc/flightrecorder/ui/common/DataPageToolkit.java	2019-04-05 15:21:45.478281189 -0400
@@ -111,12 +111,14 @@
 import org.openjdk.jmc.common.unit.IQuantity;
 import org.openjdk.jmc.common.unit.IRange;
 import org.openjdk.jmc.common.unit.KindOfQuantity;
+import org.openjdk.jmc.common.unit.QuantitiesToolkit;
 import org.openjdk.jmc.common.unit.QuantityRange;
 import org.openjdk.jmc.common.unit.RangeContentType;
 import org.openjdk.jmc.common.unit.UnitLookup;
 import org.openjdk.jmc.common.util.ColorToolkit;
 import org.openjdk.jmc.common.util.CompositeKey;
 import org.openjdk.jmc.flightrecorder.JfrAttributes;
+import org.openjdk.jmc.flightrecorder.jdk.JdkAggregators;
 import org.openjdk.jmc.flightrecorder.jdk.JdkAttributes;
 import org.openjdk.jmc.flightrecorder.jdk.JdkFilters;
 import org.openjdk.jmc.flightrecorder.jdk.JdkTypeIDs;
@@ -565,6 +567,29 @@
 		return new ItemRow(title, description, renderer, items);
 	}
 
+	public static ItemRow buildSizeHistogram(
+		String title, String description, IItemCollection items, IAggregator<IQuantity, ?> a, Color color, IAttribute<IQuantity> attribute) {
+		IQuantitySeries<IQuantity[]> allocationSeries = BucketBuilder.aggregatorSeries(items, a,
+				JdkAttributes.IO_SIZE);
+		XYDataRenderer renderer = new XYDataRenderer(getKindOfQuantity(a).getDefaultUnit().quantity(0), title,
+				description);
+		renderer.addBarChart(a.getName(), allocationSeries, color);
+		return new ItemRow(title, description, renderer, items);
+	}
+
+	public static IRange<IQuantity> buildSizeRange(IItemCollection items, boolean isSocket){
+		IQuantity end = null;
+		if(isSocket) {
+			end = QuantitiesToolkit.maxPresent(items.getAggregate(JdkAggregators.SOCKET_READ_LARGEST),
+					items.getAggregate(JdkAggregators.SOCKET_WRITE_LARGEST));
+		} else {
+			end = QuantitiesToolkit.maxPresent(items.getAggregate(JdkAggregators.FILE_READ_LARGEST),
+					items.getAggregate(JdkAggregators.FILE_WRITE_LARGEST));
+		}
+		end = end == null ? UnitLookup.BYTE.quantity(1024) : end;
+		return QuantityRange.createWithEnd(UnitLookup.BYTE.quantity(0), end);
+	}
+
 	// FIXME: Make something that can use something other than time as x-axis?
 	public static IXDataRenderer buildSpanRenderer(IItemCollection pathItems, IColorProvider<IItem> cp) {
 		ISpanSeries<IItem> dataSeries = QuantitySeries.max(pathItems, JfrAttributes.START_TIME, JfrAttributes.END_TIME);