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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/read/BtreeTest2.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/read/BtreeTest2.java
new file mode 100644
index 000000000..e44e96aad
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/read/BtreeTest2.java
@@ -0,0 +1,111 @@
+/*******************************************************************************
+ * 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.performance.read;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.UUID;
+
+import org.simantics.databoard.Bindings;
+import org.simantics.databoard.binding.mutable.Variant;
+import org.simantics.datatypes.utils.BTreeUtils;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.VirtualGraph;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.WriteOnlyGraph;
+import org.simantics.db.common.request.WriteOnlyResultRequest;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.common.request.WriteResultRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.service.VirtualGraphSupport;
+import org.simantics.db.testing.base.ExistingDatabaseTest;
+import org.simantics.utils.datastructures.Pair;
+
+
+public class BtreeTest2 extends ExistingDatabaseTest {
+
+	public static final int NODE_SIZE = 500;
+	public static final int TEN = 10;
+	public static final int HUNDRED = 100;
+	public static final int THOUSAND = 1000;
+	public static final int MILLION = 1000000;
+
+	public static final int KEY_SIZE = THOUSAND;
+	public static final int ROUNDS = THOUSAND;
+
+	public void test() throws Exception {
+
+		Session session = getSession();
+
+		VirtualGraphSupport vgss = session.getService(VirtualGraphSupport.class);
+		VirtualGraph vg = vgss.getMemoryPersistent(UUID.randomUUID().toString());
+
+		final Resource tree = session.sync(new WriteResultRequest<Resource>(vg) {
+
+			@Override
+			public Resource perform(WriteGraph graph) throws DatabaseException {
+
+				return BTreeUtils.create(graph, null, NODE_SIZE, false).getTree();
+
+			}
+
+		});
+
+		System.err.println("tree=" + tree);
+
+		for(int i=0;i<ROUNDS;i++) {
+
+			long start = System.nanoTime();
+
+			final Collection<Pair<Variant, Resource>> values = session.sync(new WriteOnlyResultRequest<Collection<Pair<Variant, Resource>>>(vg) {
+
+				@Override
+				public Collection<Pair<Variant, Resource>> perform(WriteOnlyGraph graph) throws DatabaseException {
+
+					Collection<Pair<Variant, Resource>> values = new ArrayList<Pair<Variant, Resource>>();
+					for(int i=0;i<KEY_SIZE;i++) {
+						Resource value = graph.newResource();
+						graph.claim(value, L0.InstanceOf, null, L0.String);
+						graph.claimValue(value, "Value" + i, Bindings.STRING);
+						values.add(Pair.make(Variant.ofInstance(i), value));
+					}
+					return values;
+
+				}
+
+			});
+
+			long duration = System.nanoTime()-start;
+			System.err.println("DATA at " + 1e-9*duration + "s.");
+			start = System.nanoTime();
+
+			session.sync(new WriteRequest(vg) {
+
+				@Override
+				public void perform(WriteGraph graph) throws DatabaseException {
+
+					BTreeUtils bu = BTreeUtils.create(graph, tree, NODE_SIZE, false);
+					bu.insertAll(graph, values);
+
+				}
+
+			});
+
+			duration = System.nanoTime()-start;
+			System.err.println("INSERT at " + 1e-9*duration + "s.");
+
+		}
+
+	}
+
+}