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DepthFirstBenchmarks.scala
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DepthFirstBenchmarks.scala
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package me.jeffshaw.depthfirst.benchmarks
import java.util.concurrent.TimeUnit
import me.jeffshaw.depthfirst.DepthFirst
import org.openjdk.jmh.annotations.{State => JmhState, _}
import scala.collection.generic.CanBuildFrom
@Fork(jvmArgs = Array("-Xms7g"))
@JmhState(Scope.Thread)
class DepthFirstBenchmarks extends HighPriority {
@Param(Array("1", "16", "128", "4096"))
var valueCount: Int = _
var values: Array[Int] = _
collection.mutable.ListBuffer
var valuesVector: Vector[Int] = _
var valuesList: List[Int] = _
@Param(Array("1", "2", "4", "8"))
var iterationCount: Int = _
@Param(Array("1", "2", "4"))
var duplicationFactor: Int = _
def duplicate[F[_]](x: Int)(implicit canBuildFrom: CanBuildFrom[_, Int, F[Int]]): F[Int] = {
val builder = canBuildFrom()
builder.sizeHint(duplicationFactor)
var i = 0
while (i < duplicationFactor) {
builder += x
i += 1
}
builder.result()
}
@Setup(Level.Iteration)
def setup(): Unit = {
values = BenchmarkValues.values.take(valueCount)
valuesList = values.toList
valuesVector = values.toVector
}
@Benchmark
@BenchmarkMode(Array(Mode.AverageTime))
@OutputTimeUnit(TimeUnit.MICROSECONDS)
def classicList(): Unit = {
iterationCount match {
case 1 =>
classicList1()
case 2 =>
classicList2()
case 4 =>
classicList4()
case 8 =>
classicList8()
}
}
def classicList1(): Unit = {
for {
x0 <- valuesList
x1 <- duplicate[List](x0)
} x1
}
def classicList2(): Unit = {
for {
x0 <- valuesList
x1 <- duplicate[List](x0)
x2 <- duplicate[List](x1)
} x2
}
def classicList4(): Unit = {
for {
x0 <- valuesList
x1 <- duplicate[List](x0)
x2 <- duplicate[List](x1)
x3 <- duplicate[List](x2)
x4 <- duplicate[List](x3)
} x4
}
def classicList8(): Unit = {
for {
x0 <- valuesList
x1 <- duplicate[List](x0)
x2 <- duplicate[List](x1)
x3 <- duplicate[List](x2)
x4 <- duplicate[List](x3)
x5 <- duplicate[List](x4)
x6 <- duplicate[List](x5)
x7 <- duplicate[List](x6)
x8 <- duplicate[List](x7)
} x8
}
@Benchmark
@BenchmarkMode(Array(Mode.AverageTime))
@OutputTimeUnit(TimeUnit.MICROSECONDS)
def depthFirstList(): Unit = {
iterationCount match {
case 1 =>
depthFirstList1()
case 2 =>
depthFirstList2()
case 4 =>
depthFirstList4()
case 8 =>
depthFirstList8()
}
}
def depthFirstList1(): Unit = {
for {
x0 <- DepthFirst(valuesList)
x1 <- duplicate[List](x0)
} x1
}
def depthFirstList2(): Unit = {
for {
x0 <- DepthFirst(valuesList)
x1 <- duplicate[List](x0)
x2 <- duplicate[List](x1)
} x2
}
def depthFirstList4(): Unit = {
for {
x0 <- DepthFirst(valuesList)
x1 <- duplicate[List](x0)
x2 <- duplicate[List](x1)
x3 <- duplicate[List](x2)
x4 <- duplicate[List](x3)
} x4
}
def depthFirstList8(): Unit = {
for {
x0 <- DepthFirst(valuesList)
x1 <- duplicate[List](x0)
x2 <- duplicate[List](x1)
x3 <- duplicate[List](x2)
x4 <- duplicate[List](x3)
x5 <- duplicate[List](x4)
x6 <- duplicate[List](x5)
x7 <- duplicate[List](x6)
x8 <- duplicate[List](x7)
} x8
}
@Benchmark
@BenchmarkMode(Array(Mode.AverageTime))
@OutputTimeUnit(TimeUnit.MICROSECONDS)
def classicVector(): Unit = {
iterationCount match {
case 1 =>
classicVector1()
case 2 =>
classicVector2()
case 4 =>
classicVector4()
case 8 =>
classicVector8()
}
}
def classicVector1(): Unit = {
for {
x0 <- valuesVector
x1 <- duplicate[Vector](x0)
} x1
}
def classicVector2(): Unit = {
for {
x0 <- valuesVector
x1 <- duplicate[Vector](x0)
x2 <- duplicate[Vector](x1)
} x2
}
def classicVector4(): Unit = {
for {
x0 <- valuesVector
x1 <- duplicate[Vector](x0)
x2 <- duplicate[Vector](x1)
x3 <- duplicate[Vector](x2)
x4 <- duplicate[Vector](x3)
} x4
}
def classicVector8(): Unit = {
for {
x0 <- valuesVector
x1 <- duplicate[Vector](x0)
x2 <- duplicate[Vector](x1)
x3 <- duplicate[Vector](x2)
x4 <- duplicate[Vector](x3)
x5 <- duplicate[Vector](x4)
x6 <- duplicate[Vector](x5)
x7 <- duplicate[Vector](x6)
x8 <- duplicate[Vector](x7)
} x8
}
@Benchmark
@BenchmarkMode(Array(Mode.AverageTime))
@OutputTimeUnit(TimeUnit.MICROSECONDS)
def depthFirstVector(): Unit = {
iterationCount match {
case 1 =>
depthFirstVector1()
case 2 =>
depthFirstVector2()
case 4 =>
depthFirstVector4()
case 8 =>
depthFirstVector8()
}
}
def depthFirstVector1(): Unit = {
for {
x0 <- DepthFirst(valuesVector)
x1 <- DepthFirst(duplicate[Vector](x0))
} x1
}
def depthFirstVector2(): Unit = {
for {
x0 <- DepthFirst(valuesVector)
x1 <- duplicate[Vector](x0)
x2 <- duplicate[Vector](x1)
} x2
}
def depthFirstVector4(): Unit = {
for {
x0 <- DepthFirst(valuesVector)
x1 <- duplicate[Vector](x0)
x2 <- duplicate[Vector](x1)
x3 <- duplicate[Vector](x2)
x4 <- duplicate[Vector](x3)
} x4
}
def depthFirstVector8(): Unit = {
for {
x0 <- DepthFirst(valuesVector)
x1 <- duplicate[Vector](x0)
x2 <- duplicate[Vector](x1)
x3 <- duplicate[Vector](x2)
x4 <- duplicate[Vector](x3)
x5 <- duplicate[Vector](x4)
x6 <- duplicate[Vector](x5)
x7 <- duplicate[Vector](x6)
x8 <- duplicate[Vector](x7)
} x8
}
}