TMF: Add benchmarks for timestamp transforms

Change-Id: I4b1e2c220473f1c9b7eba5002cbcdbfe4e5c56d8
Signed-off-by: Geneviève Bastien <gbastien+lttng@versatic.net>
Signed-off-by: Francis Giraldeau <francis.giraldeau@gmail.com>
Reviewed-on: https://git.eclipse.org/r/32575
Tested-by: Hudson CI
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>

7 files changed, 145 insertions, 2 deletions

diff --git a/lttng/org.eclipse.linuxtools.lttng.alltests/src/org/eclipse/linuxtools/lttng/alltests/RunAllPerfTests.java b/lttng/org.eclipse.linuxtools.lttng.alltests/src/org/eclipse/linuxtools/lttng/alltests/RunAllPerfTests.java
index 2d9b4bb85f..70dd3c4963 100644
--- a/lttng/org.eclipse.linuxtools.lttng.alltests/src/org/eclipse/linuxtools/lttng/alltests/RunAllPerfTests.java
+++ b/lttng/org.eclipse.linuxtools.lttng.alltests/src/org/eclipse/linuxtools/lttng/alltests/RunAllPerfTests.java
@@ -23,6 +23,7 @@ import org.junit.runners.Suite;
     org.eclipse.linuxtools.ctf.core.tests.perf.AllPerfTests.class,
     org.eclipse.linuxtools.lttng2.kernel.core.tests.perf.AllPerfTests.class,
     org.eclipse.linuxtools.pcap.core.tests.perf.AllPerfTests.class,
+    org.eclipse.linuxtools.tmf.core.tests.perf.AllPerfTests.class,
     org.eclipse.linuxtools.tmf.ctf.core.tests.perf.AllPerfTests.class
 })
 public class RunAllPerfTests {
diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/.classpath b/lttng/org.eclipse.linuxtools.tmf.core.tests/.classpath
index 9bacd0f47a..f2804a9f0d 100644
--- a/lttng/org.eclipse.linuxtools.tmf.core.tests/.classpath
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/.classpath
@@ -5,5 +5,6 @@
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="src" path="stubs"/>
 	<classpathentry kind="src" path="shared"/>
+	<classpathentry kind="src" path="perf"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/META-INF/MANIFEST.MF b/lttng/org.eclipse.linuxtools.tmf.core.tests/META-INF/MANIFEST.MF
index 39850b9a5b..aed1ba1cf1 100644
--- a/lttng/org.eclipse.linuxtools.tmf.core.tests/META-INF/MANIFEST.MF
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/META-INF/MANIFEST.MF
@@ -11,8 +11,10 @@ Bundle-RequiredExecutionEnvironment: JavaSE-1.7
 Require-Bundle: org.junit;bundle-version="4.0.0",
  org.eclipse.core.runtime,
  org.eclipse.core.resources,
- org.eclipse.linuxtools.tmf.core;bundle-version="3.0.0"
+ org.eclipse.linuxtools.tmf.core;bundle-version="3.0.0",
+ org.eclipse.test.performance
 Export-Package: org.eclipse.linuxtools.tmf.core.tests,
+ org.eclipse.linuxtools.tmf.core.tests.perf,
  org.eclipse.linuxtools.tmf.core.tests.shared,
  org.eclipse.linuxtools.tmf.tests.stubs.trace
 Import-Package: com.google.common.collect
diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/build.properties b/lttng/org.eclipse.linuxtools.tmf.core.tests/build.properties
index 594953dae6..10715adf74 100644
--- a/lttng/org.eclipse.linuxtools.tmf.core.tests/build.properties
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/build.properties
@@ -12,7 +12,8 @@
 
 source.. = stubs/,\
            shared/,\
-           src/
+           src/,\
+           perf/
 output.. = bin/
 bin.includes = META-INF/,\
                .,\
diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/AllPerfTests.java b/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/AllPerfTests.java
new file mode 100644
index 0000000000..f1d50f1389
--- /dev/null
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/AllPerfTests.java
@@ -0,0 +1,31 @@
+/*******************************************************************************
+ * Copyright (c) 2014 École Polytechnique de Montréal
+ *
+ * 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:
+ *   Geneviève Bastien - Initial implementation and API
+ *******************************************************************************/
+
+package org.eclipse.linuxtools.tmf.core.tests.perf;
+
+import org.junit.runner.RunWith;
+import org.junit.runners.Suite;
+
+/**
+ * The class <code>AllPerformanceTests</code> builds a suite that can be used to
+ * run all of the performance tests within its package as well as within any
+ * subpackages of its package.
+ *
+ * @author Geneviève Bastien
+ */
+@RunWith(Suite.class)
+@Suite.SuiteClasses({
+        org.eclipse.linuxtools.tmf.core.tests.perf.synchronization.AllPerfTests.class
+})
+public class AllPerfTests {
+
+}
diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/synchronization/AllPerfTests.java b/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/synchronization/AllPerfTests.java
new file mode 100644
index 0000000000..3d9971f6b6
--- /dev/null
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/synchronization/AllPerfTests.java
@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * Copyright (c) 2014 École Polytechnique de Montréal
+ *
+ * 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:
+ *   Geneviève Bastien - Initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.linuxtools.tmf.core.tests.perf.synchronization;
+
+import org.junit.runner.RunWith;
+import org.junit.runners.Suite;
+
+/**
+ * Performance tests for the synchronization classes
+ *
+ * @author Geneviève Bastien
+ */
+@RunWith(Suite.class)
+@Suite.SuiteClasses({
+        TimestampTransformBenchmark.class
+})
+public class AllPerfTests {
+
+}
diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/synchronization/TimestampTransformBenchmark.java b/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/synchronization/TimestampTransformBenchmark.java
new file mode 100644
index 0000000000..d3dc0677fe
--- /dev/null
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/perf/org/eclipse/linuxtools/tmf/core/tests/perf/synchronization/TimestampTransformBenchmark.java
@@ -0,0 +1,78 @@
+/*******************************************************************************
+ * Copyright (c) 2014 École Polytechnique de Montréal
+ *
+ * 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:
+ *   Francis Giraldeau - Initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.linuxtools.tmf.core.tests.perf.synchronization;
+
+import org.eclipse.linuxtools.tmf.core.synchronization.ITmfTimestampTransform;
+import org.eclipse.linuxtools.tmf.core.synchronization.TimestampTransformFactory;
+import org.eclipse.test.performance.Dimension;
+import org.eclipse.test.performance.Performance;
+import org.eclipse.test.performance.PerformanceMeter;
+import org.junit.Test;
+
+/**
+ * Test the performance of linear transforms classes
+ *
+ * @author Francis Giraldeau
+ */
+public class TimestampTransformBenchmark {
+
+    private static final String TEST_ID = "org.eclipse.linuxtools#Trace synchronization#";
+    private static final String TEST_SUMMARY = "Timestamp Transform: ";
+
+    /** Number of transformations done for each transform: 50 millions */
+    private static final long NB_TRANSFORMATIONS = 50000000L;
+
+    /**
+     * Test the timestamp transform performances
+     */
+    @Test
+    public void testTimestampTransformPerformance() {
+        ITmfTimestampTransform transform = TimestampTransformFactory.getDefaultTransform();
+        doTimestampTransformRun("Identity transform", transform, 10);
+
+        transform = TimestampTransformFactory.createWithOffset(123456789);
+        doTimestampTransformRun("Transform with offset", transform, 10);
+
+        transform = TimestampTransformFactory.createLinear(Math.PI, 1234);
+        doTimestampTransformRun("Linear transform", transform, 5);
+
+        transform = TimestampTransformFactory.createLinear(10000.1234545565635, -4312278758437L);
+        doTimestampTransformRun("Linear transform with larger slope and negative offset", transform, 5);
+    }
+
+    private static void doTimestampTransformRun(String testName, ITmfTimestampTransform xform, long loopCount) {
+        Performance perf = Performance.getDefault();
+        PerformanceMeter pm = perf.createPerformanceMeter(TEST_ID + testName);
+        perf.tagAsSummary(pm, TEST_SUMMARY + testName, Dimension.CPU_TIME);
+
+        for (int x = 0; x < loopCount; x++) {
+            /**
+             * We use timestamps with values in the order of 10^18, which about
+             * corresponds to timestamps in nanoseconds since epoch
+             */
+            long time = (long) Math.pow(10, 18);
+            pm.start();
+            /**
+             * Apply the timestamp transform NB_TRANSFORMATIONS times, with
+             * timestamps incremented by 200 each time
+             */
+            for (long i = 0; i < NB_TRANSFORMATIONS; i++) {
+                xform.transform(time);
+                time += 200;
+            }
+            pm.stop();
+        }
+        pm.commit();
+    }
+
+}