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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/scalability/WriteHierarchicalNames.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/scalability/WriteHierarchicalNames.java
new file mode 100644
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+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/scalability/WriteHierarchicalNames.java
@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.tests.scalability;
+
+import org.simantics.db.Resource;
+import org.simantics.db.common.TransactionPolicyKeep;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.request.WriteInterface;
+import org.simantics.db.service.TransactionPolicySupport;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.db.tests.performance.read.HierarchicalNames;
+import org.simantics.layer0.Layer0;
+
+public class WriteHierarchicalNames extends ExistingDatabaseTest {
+
+	final private static String name = "name";
+	
+	// 512k nodes
+	int[] sizes = { 122, 64, 64 };
+	
+	private Resource time(String label, WriteInterface<Resource> request) throws DatabaseException {
+
+		long start = System.nanoTime();
+		Resource result = getSession().sync(request);
+		long duration = System.nanoTime() - start;
+		System.out.println(label + " = " + 1e-9*duration);
+		return result;
+		
+	}
+	
+	public void test() throws Exception {
+		
+		Layer0.getInstance(getSession());
+
+		getSession().registerService(TransactionPolicySupport.class, new TransactionPolicyKeep());
+		
+		time("writeOnly", HierarchicalNames.writeOnly(name, sizes));
+		time("writeOnly2", HierarchicalNames.writeOnly2(name, sizes));
+		time("write", HierarchicalNames.write(name, sizes));
+		time("write2", HierarchicalNames.write2(name, sizes));
+
+	}
+
+}