--- libmalloc/libmalloc-283.40.1/tests/MallocBenchTest/MallocBench.plist
+++ libmalloc/libmalloc-374.40.6/tests/MallocBenchTest/MallocBench.plist
@@ -21,16 +21,21 @@
 				<string>BATS_TMP_DIR/.*perfdata</string>
 				<string>BATS_TMP_DIR/dtres_.*</string>
 			</array>
+			<key>TestOutputType</key>
+			<string>stderrOutput</string>
 			<key>TestName</key>
 			<string>libmalloc.MallocBench</string>
 			<key>Timeout</key>
-			<integer>2400</integer>
+			<integer>4800</integer>
 			<key>WorkingDirectory</key>
 			<string>/AppleInternal/Tests/libmalloc</string>
 			<key>Tags</key>
 			<array>
 				<string>perf</string>
 			</array>
+			<!-- MallocBench is no longer representative of workloads that libmalloc is optimizing for. -->
+			<key>Disabled</key>
+			<true/>
 		</dict>
 	</array>
 </dict>