1 files changed, 133 insertions, 0 deletions
diff --git a/opendc-simulator/opendc-simulator-flow/src/jmh/kotlin/org/opendc/simulator/flow/FlowBenchmarks.kt b/opendc-simulator/opendc-simulator-flow/src/jmh/kotlin/org/opendc/simulator/flow/FlowBenchmarks.kt
new file mode 100644
index 00000000..aabd2220
--- /dev/null
+++ b/opendc-simulator/opendc-simulator-flow/src/jmh/kotlin/org/opendc/simulator/flow/FlowBenchmarks.kt
@@ -0,0 +1,133 @@
+/*
+ * 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.flow
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.launch
+import org.opendc.simulator.core.runBlockingSimulation
+import org.opendc.simulator.flow.mux.ForwardingFlowMultiplexer
+import org.opendc.simulator.flow.mux.MaxMinFlowMultiplexer
+import org.opendc.simulator.flow.source.TraceFlowSource
+import org.openjdk.jmh.annotations.*
+import java.util.concurrent.ThreadLocalRandom
+import java.util.concurrent.TimeUnit
+
+@State(Scope.Thread)
+@Fork(1)
+@Warmup(iterations = 2, time = 1, timeUnit = TimeUnit.SECONDS)
+@Measurement(iterations = 5, time = 3, timeUnit = TimeUnit.SECONDS)
+@OptIn(ExperimentalCoroutinesApi::class)
+class FlowBenchmarks {
+    private lateinit var trace: Sequence<TraceFlowSource.Fragment>
+
+    @Setup
+    fun setUp() {
+        val random = ThreadLocalRandom.current()
+        val entries = List(10000) { TraceFlowSource.Fragment(1000, random.nextDouble(0.0, 4500.0)) }
+        trace = entries.asSequence()
+    }
+
+    @Benchmark
+    fun benchmarkSink() {
+        return runBlockingSimulation {
+            val engine = FlowEngine(coroutineContext, clock)
+            val provider = FlowSink(engine, 4200.0)
+            return@runBlockingSimulation provider.consume(TraceFlowSource(trace))
+        }
+    }
+
+    @Benchmark
+    fun benchmarkForward() {
+        return runBlockingSimulation {
+            val engine = FlowEngine(coroutineContext, clock)
+            val provider = FlowSink(engine, 4200.0)
+            val forwarder = FlowForwarder(engine)
+            provider.startConsumer(forwarder)
+            return@runBlockingSimulation forwarder.consume(TraceFlowSource(trace))
+        }
+    }
+
+    @Benchmark
+    fun benchmarkMuxMaxMinSingleSource() {
+        return runBlockingSimulation {
+            val engine = FlowEngine(coroutineContext, clock)
+            val switch = MaxMinFlowMultiplexer(engine)
+
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+
+            val provider = switch.newInput()
+            return@runBlockingSimulation provider.consume(TraceFlowSource(trace))
+        }
+    }
+
+    @Benchmark
+    fun benchmarkMuxMaxMinTripleSource() {
+        return runBlockingSimulation {
+            val engine = FlowEngine(coroutineContext, clock)
+            val switch = MaxMinFlowMultiplexer(engine)
+
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+
+            repeat(3) {
+                launch {
+                    val provider = switch.newInput()
+                    provider.consume(TraceFlowSource(trace))
+                }
+            }
+        }
+    }
+
+    @Benchmark
+    fun benchmarkMuxExclusiveSingleSource() {
+        return runBlockingSimulation {
+            val engine = FlowEngine(coroutineContext, clock)
+            val switch = ForwardingFlowMultiplexer(engine)
+
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+
+            val provider = switch.newInput()
+            return@runBlockingSimulation provider.consume(TraceFlowSource(trace))
+        }
+    }
+
+    @Benchmark
+    fun benchmarkMuxExclusiveTripleSource() {
+        return runBlockingSimulation {
+            val engine = FlowEngine(coroutineContext, clock)
+            val switch = ForwardingFlowMultiplexer(engine)
+
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+            FlowSink(engine, 3000.0).startConsumer(switch.newOutput())
+
+            repeat(2) {
+                launch {
+                    val provider = switch.newInput()
+                    provider.consume(TraceFlowSource(trace))
+                }
+            }
+        }
+    }
+}