diff --git a/resources/tests/org.eclipse.core.tests.resources/src/org/eclipse/core/tests/resources/MarkerTest.java b/resources/tests/org.eclipse.core.tests.resources/src/org/eclipse/core/tests/resources/MarkerTest.java
index ef73b2fde6a..9d3747d8d54 100644
--- a/resources/tests/org.eclipse.core.tests.resources/src/org/eclipse/core/tests/resources/MarkerTest.java
+++ b/resources/tests/org.eclipse.core.tests.resources/src/org/eclipse/core/tests/resources/MarkerTest.java
@@ -24,7 +24,6 @@
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Hashtable;
@@ -151,159 +150,6 @@ private void addResourceChangeListener(MarkersChangeListener listener) {
 		}
 	}
 
-	public void _testPerformanceManyResources() {
-		debug("testPerformanceManyResources");
-		long start;
-		long stop;
-
-		// cleanup old resources and create our own
-		IResource[] testResources = null;
-		try {
-			getWorkspace().getRoot().delete(false, getMonitor());
-			testResources = createLargeHierarchy();
-		} catch (CoreException e) {
-			fail("0.0", e);
-		}
-
-		// header info
-		final int markersPerResource = 20;
-		final int numMarkers = testResources.length * markersPerResource;
-		display("\nNumber of resources: " + testResources.length);
-		display("Markers per resource: " + markersPerResource);
-		display("Total Number of Markers: " + numMarkers);
-
-		// Create an array with a bunch of markers.
-		IWorkspaceRunnable body = monitor -> {
-			IResourceVisitor visitor = resource -> {
-				for (int i = 0; i < markersPerResource; i++) {
-					resource.createMarker(IMarker.PROBLEM);
-				}
-				return true;
-			};
-			getWorkspace().getRoot().accept(visitor);
-		};
-		try {
-			start = System.currentTimeMillis();
-			getWorkspace().run(body, getMonitor());
-			stop = System.currentTimeMillis();
-			display("Task: creating markers");
-			display(start, stop);
-		} catch (CoreException e) {
-			fail("0.0", e);
-		}
-
-		// gather the markers for use. don't time this one.
-		final IMarker[] markers = new IMarker[numMarkers];
-		try {
-			IMarker[] temp = getWorkspace().getRoot().findMarkers(null, true, IResource.DEPTH_INFINITE);
-			assertEquals("0.1", numMarkers, temp.length);
-			System.arraycopy(temp, 0, markers, 0, temp.length);
-		} catch (CoreException e) {
-			fail("0.2", e);
-		}
-
-		// create attributes on each marker
-		body = monitor -> {
-			for (IMarker marker : markers) {
-				marker.setAttribute(IMarker.MESSAGE, getRandomString());
-			}
-		};
-		try {
-			start = System.currentTimeMillis();
-			getWorkspace().run(body, getMonitor());
-			stop = System.currentTimeMillis();
-			display("Task: setting an attribute on each marker");
-			display(start, stop);
-		} catch (CoreException e) {
-			fail("1.0", e);
-		}
-
-		// get the attribute from each marker
-		body = monitor -> {
-			for (IMarker marker : markers) {
-				marker.getAttribute(IMarker.MESSAGE);
-			}
-		};
-		try {
-			start = System.currentTimeMillis();
-			getWorkspace().run(body, getMonitor());
-			stop = System.currentTimeMillis();
-			display("Task: getting an attribute on each marker");
-			display(start, stop);
-		} catch (CoreException e) {
-			fail("2.0", e);
-		}
-	}
-
-	public void _testPerformanceOneResource() {
-		debug("testPerformanceOneResource");
-		long start;
-		long stop;
-		final int numMarkers = 4000;
-
-		// header info
-		display("Number of resources: 1");
-		display("Number of Markers: " + numMarkers);
-
-		// Create an array with a bunch of markers.
-		final IMarker markers[] = new IMarker[numMarkers];
-		IWorkspaceRunnable body = monitor -> {
-			IResource resource = getWorkspace().getRoot();
-			for (int i = 0; i < markers.length; i++) {
-				markers[i] = resource.createMarker(IMarker.PROBLEM);
-			}
-		};
-		try {
-			start = System.currentTimeMillis();
-			getWorkspace().run(body, getMonitor());
-			stop = System.currentTimeMillis();
-			display("Task: creating markers");
-			display(start, stop);
-		} catch (CoreException e) {
-			fail("0.0", e);
-		}
-
-		// create attributes on each marker
-		body = monitor -> {
-			for (IMarker marker : markers) {
-				marker.setAttribute(IMarker.MESSAGE, getRandomString());
-			}
-		};
-		try {
-			start = System.currentTimeMillis();
-			getWorkspace().run(body, getMonitor());
-			stop = System.currentTimeMillis();
-			display("Task: setting an attribute on each marker");
-			display(start, stop);
-		} catch (CoreException e) {
-			fail("1.0", e);
-		}
-
-		java.util.Comparator<IMarker> c = (o1, o2) -> {
-			try {
-				String name1 = (String) o1.getAttribute(IMarker.MESSAGE);
-				String name2 = (String) o2.getAttribute(IMarker.MESSAGE);
-				if (name1 == null) {
-					name1 = "";
-				}
-				if (name2 == null) {
-					name2 = "";
-				}
-				int result = name1.compareToIgnoreCase(name2);
-				return result;
-			} catch (CoreException e) {
-				fail("2.0", e);
-			}
-			// avoid compiler error
-			return -1;
-		};
-		start = System.currentTimeMillis();
-		Arrays.sort(markers, c);
-		stop = System.currentTimeMillis();
-		display("Task: sort arrays based on MESSAGE attribute");
-		display(start, stop);
-	}
-
 	protected void addChildren(ArrayList<String> result, IPath root, int breadth, int depth) {
 		for (int i = 1; i < breadth + 1; i++) {
 			IPath child = root.append(i + "");