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/*
* Copyright (c) 2026 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.experiments
import org.opendc.experiments.base.runner.ExperimentCommand
import org.openjdk.jmh.annotations.Benchmark
import org.openjdk.jmh.annotations.BenchmarkMode
import org.openjdk.jmh.annotations.Fork
import org.openjdk.jmh.annotations.Measurement
import org.openjdk.jmh.annotations.Mode
import org.openjdk.jmh.annotations.OutputTimeUnit
import org.openjdk.jmh.annotations.Scope
import org.openjdk.jmh.annotations.State
import org.openjdk.jmh.annotations.Warmup
import java.io.File
import java.util.concurrent.TimeUnit
/**
* benchmark that measures simulation performance for workloads with
* increasing number of fragments from 1 to 10k.
*
* Each benchmark runs a full workload and measures runtime and [HeapStats]
* (average and peak heap).
*
* Every benchmark simulates a workload consisting of 1000 tasks.
* However, the number of fragments increases from 1 to 10k.
*
* The following variables are all fixed:
* - **Topology**: 100-host cluster (`topologies/taskScaling/topology_100.json`)
* - **Allocation policy**: memory-based (`Mem`)
* - **Export interval**: set to 999999 to make the simulator export only at the end of the simulation,
* to minimize the impact of telemetry export on the results.
*
* JFR profiling and heap statistics collection are provided by [OpenDCBenchmark].
*/
@State(Scope.Thread)
@Fork(1)
@Warmup(iterations = 1, batchSize = 1)
@Measurement(iterations = 5, batchSize = 1)
@BenchmarkMode(Mode.SingleShotTime)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
open class FragmentScalingBenchmark : OpenDCBenchmark() {
/** Runs the simulation with a workload containing 1 fragment. */
@Benchmark
fun fragmentScalingBenchmark1() {
ExperimentCommand().main(arrayOf("--experiment-path", "src/jmh/resources/experiments/fragmentScaling/experiment_1.json"))
File("output").deleteRecursively()
}
/** Runs the simulation with a workload containing 10 fragments. */
@Benchmark
fun fragmentScalingBenchmark10() {
ExperimentCommand().main(arrayOf("--experiment-path", "src/jmh/resources/experiments/fragmentScaling/experiment_10.json"))
File("output").deleteRecursively()
}
/** Runs the simulation with a workload containing 100 fragments. */
@Benchmark
fun fragmentScalingBenchmark100() {
ExperimentCommand().main(arrayOf("--experiment-path", "src/jmh/resources/experiments/fragmentScaling/experiment_100.json"))
File("output").deleteRecursively()
}
/** Runs the simulation with a workload containing 1 000 fragments. */
@Benchmark
fun fragmentScalingBenchmark1K() {
ExperimentCommand().main(arrayOf("--experiment-path", "src/jmh/resources/experiments/fragmentScaling/experiment_1K.json"))
File("output").deleteRecursively()
}
/** Runs the simulation with a workload containing 10 000 fragments. */
@Benchmark
fun fragmentScalingBenchmark10K() {
ExperimentCommand().main(arrayOf("--experiment-path", "src/jmh/resources/experiments/fragmentScaling/experiment_10K.json"))
File("output").deleteRecursively()
}
}
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