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From mattsic...@apache.org
Subject svn commit: r1615448 - /logging/log4j/log4j2/trunk/log4j-perf/src/main/java/org/apache/logging/log4j/perf/jmh/UuidGeneratorBenchmark.java
Date Sun, 03 Aug 2014 20:28:51 GMT
Author: mattsicker
Date: Sun Aug  3 20:28:51 2014
New Revision: 1615448

URL: http://svn.apache.org/r1615448
Log:
Add UUID generator benchmark.

Added:
    logging/log4j/log4j2/trunk/log4j-perf/src/main/java/org/apache/logging/log4j/perf/jmh/UuidGeneratorBenchmark.java

Added: logging/log4j/log4j2/trunk/log4j-perf/src/main/java/org/apache/logging/log4j/perf/jmh/UuidGeneratorBenchmark.java
URL: http://svn.apache.org/viewvc/logging/log4j/log4j2/trunk/log4j-perf/src/main/java/org/apache/logging/log4j/perf/jmh/UuidGeneratorBenchmark.java?rev=1615448&view=auto
==============================================================================
--- logging/log4j/log4j2/trunk/log4j-perf/src/main/java/org/apache/logging/log4j/perf/jmh/UuidGeneratorBenchmark.java
(added)
+++ logging/log4j/log4j2/trunk/log4j-perf/src/main/java/org/apache/logging/log4j/perf/jmh/UuidGeneratorBenchmark.java
Sun Aug  3 20:28:51 2014
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache license, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the license for the specific language governing permissions and
+ * limitations under the license.
+ */
+
+package org.apache.logging.log4j.perf.jmh;
+
+import java.util.UUID;
+
+import org.apache.logging.log4j.core.util.UuidUtil;
+import org.openjdk.jmh.annotations.GenerateMicroBenchmark;
+
+/**
+ * Compares random UUID generation with time-based UUID generation.
+ */
+// ============================== HOW TO RUN THIS TEST: ====================================
+//
+// java -jar log4j-perf/target/microbenchmarks.jar ".*UuidGeneratorBenchmark.*" -f 1 -wi
5 -i 5
+//
+// Usage help:
+// java -jar log4j-perf/target/microbenchmarks.jar -help
+//
+public class UuidGeneratorBenchmark {
+
+    @GenerateMicroBenchmark
+    public UUID base() {
+        return null;
+    }
+
+    @GenerateMicroBenchmark
+    public UUID randomUUID() {
+        return UUID.randomUUID();
+    }
+
+    @GenerateMicroBenchmark
+    public UUID timeBasedUUID() {
+        return UuidUtil.getTimeBasedUuid();
+    }
+}



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