simulator: Add benchmarks for resource consumption framework

This change adds an initial set of benchmarks for the resource
consumption framework in order to measure the effect of changes on the
performance of the simulator.

3 files changed, 153 insertions, 0 deletions

diff --git a/simulator/opendc-simulator/opendc-simulator-resources/build.gradle.kts b/simulator/opendc-simulator/opendc-simulator-resources/build.gradle.kts
index 831ca3db..3b0a197c 100644
--- a/simulator/opendc-simulator/opendc-simulator-resources/build.gradle.kts
+++ b/simulator/opendc-simulator/opendc-simulator-resources/build.gradle.kts
@@ -26,6 +26,7 @@ plugins {
     `kotlin-library-conventions`
     `testing-conventions`
     `jacoco-conventions`
+    `benchmark-conventions`
 }
 
 dependencies {
@@ -33,5 +34,6 @@ dependencies {
     api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
     implementation(project(":opendc-utils"))
 
+    jmhImplementation(project(":opendc-simulator:opendc-simulator-core"))
     testImplementation(project(":opendc-simulator:opendc-simulator-core"))
 }
diff --git a/simulator/opendc-simulator/opendc-simulator-resources/src/jmh/kotlin/org/opendc/simulator/resources/SimResourceSourceBenchmark.kt b/simulator/opendc-simulator/opendc-simulator-resources/src/jmh/kotlin/org/opendc/simulator/resources/SimResourceSourceBenchmark.kt
new file mode 100644
index 00000000..09246fe4
--- /dev/null
+++ b/simulator/opendc-simulator/opendc-simulator-resources/src/jmh/kotlin/org/opendc/simulator/resources/SimResourceSourceBenchmark.kt
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package org.opendc.simulator.resources
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.TestCoroutineScope
+import kotlinx.coroutines.test.runBlockingTest
+import org.opendc.simulator.resources.consumer.SimTraceConsumer
+import org.opendc.simulator.utils.DelayControllerClockAdapter
+import org.opendc.utils.TimerScheduler
+import org.openjdk.jmh.annotations.*
+import java.time.Clock
+import java.util.concurrent.TimeUnit
+
+@State(Scope.Benchmark)
+@Fork(1)
+@Warmup(iterations = 0)
+@Measurement(iterations = 5, time = 3, timeUnit = TimeUnit.SECONDS)
+@OptIn(ExperimentalCoroutinesApi::class)
+class SimResourceSourceBenchmark {
+    private lateinit var scope: TestCoroutineScope
+    private lateinit var clock: Clock
+    private lateinit var scheduler: TimerScheduler<Any>
+    private lateinit var consumer: SimResourceConsumer<SimGenericResource>
+
+    @Setup
+    fun setUp() {
+        scope = TestCoroutineScope()
+        clock = DelayControllerClockAdapter(scope)
+        scheduler = TimerScheduler(scope.coroutineContext, clock)
+        consumer =
+            SimTraceConsumer(
+                sequenceOf(
+                    SimTraceConsumer.Fragment(1000, 28.0),
+                    SimTraceConsumer.Fragment(1000, 3500.0),
+                    SimTraceConsumer.Fragment(1000, 0.0),
+                    SimTraceConsumer.Fragment(1000, 183.0),
+                    SimTraceConsumer.Fragment(1000, 400.0),
+                    SimTraceConsumer.Fragment(1000, 100.0),
+                    SimTraceConsumer.Fragment(1000, 3000.0),
+                    SimTraceConsumer.Fragment(1000, 4500.0),
+                ),
+            )
+    }
+
+    @Benchmark
+    fun benchmarkSource() {
+        return scope.runBlockingTest {
+            val provider = SimResourceSource(SimGenericResource(4200.0), clock, scheduler)
+            return@runBlockingTest provider.consume(consumer)
+        }
+    }
+
+    data class SimGenericResource(override val capacity: Double) : SimResource
+}
diff --git a/simulator/opendc-simulator/opendc-simulator-resources/src/jmh/kotlin/org/opendc/simulator/resources/SimResourceSwitchBenchmark.kt b/simulator/opendc-simulator/opendc-simulator-resources/src/jmh/kotlin/org/opendc/simulator/resources/SimResourceSwitchBenchmark.kt
new file mode 100644
index 00000000..be31e86d
--- /dev/null
+++ b/simulator/opendc-simulator/opendc-simulator-resources/src/jmh/kotlin/org/opendc/simulator/resources/SimResourceSwitchBenchmark.kt
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package org.opendc.simulator.resources
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.TestCoroutineScope
+import kotlinx.coroutines.test.runBlockingTest
+import org.opendc.simulator.resources.consumer.SimTraceConsumer
+import org.opendc.simulator.utils.DelayControllerClockAdapter
+import org.opendc.utils.TimerScheduler
+import org.openjdk.jmh.annotations.*
+import java.time.Clock
+import java.util.concurrent.TimeUnit
+
+@State(Scope.Benchmark)
+@Fork(1)
+@Warmup(iterations = 0)
+@Measurement(iterations = 5, time = 2, timeUnit = TimeUnit.SECONDS)
+@OptIn(ExperimentalCoroutinesApi::class)
+class SimResourceSwitchBenchmark {
+    private lateinit var scope: TestCoroutineScope
+    private lateinit var clock: Clock
+    private lateinit var scheduler: TimerScheduler<Any>
+    private lateinit var consumer: SimResourceConsumer<SimGenericResource>
+
+    @Setup
+    fun setUp() {
+        scope = TestCoroutineScope()
+        clock = DelayControllerClockAdapter(scope)
+        scheduler = TimerScheduler(scope.coroutineContext, clock)
+        consumer =
+            SimTraceConsumer(
+                sequenceOf(
+                    SimTraceConsumer.Fragment(1000, 28.0),
+                    SimTraceConsumer.Fragment(1000, 3500.0),
+                    SimTraceConsumer.Fragment(1000, 0.0),
+                    SimTraceConsumer.Fragment(1000, 183.0)
+                ),
+            )
+    }
+
+    @Benchmark
+    fun benchmarkSwitch() {
+        return scope.runBlockingTest {
+            val switch = SimResourceSwitchMaxMin<SimGenericResource>(clock)
+
+            switch.addInput(SimResourceSource(SimGenericResource(3000.0), clock, scheduler))
+            switch.addInput(SimResourceSource(SimGenericResource(3000.0), clock, scheduler))
+
+            val provider = switch.addOutput(SimGenericResource(3500.0))
+            return@runBlockingTest provider.consume(consumer)
+        }
+    }
+
+    data class SimGenericResource(override val capacity: Double) : SimResource
+}