PhiloxGenerationPerformance (Apache Commons RNG JMH Benchmark 1.7 API)

java.lang.Object
- org.apache.commons.rng.examples.jmh.core.AbstractBenchmark
- - org.apache.commons.rng.examples.jmh.core.PhiloxGenerationPerformance

```
public class PhiloxGenerationPerformance
extends AbstractBenchmark
```
Executes benchmark to compare the speed of generation of random numbers from the various Philox providers.
Performance Notes
Some improvements to performance are observed on JDK 8 for the inline and zero variations of the 32-bit generator. On higher JDKs the performance of the original implementation is consistently the best and the modified variants are either the same speed but can be significantly slower. This typically occurs for the inline variant which may not be efficiently targeted by the JVM optimisations. The variations are left for future development.
The 64-bit generator can be made significantly faster if it uses the 64-bit multiplication methods available in the Math class (see RNG-188).

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class PhiloxGenerationPerformance.Sources
The benchmark state (retrieve the various "RandomSource"s).

Constructor Summary

Constructors
Constructor Description

PhiloxGenerationPerformance()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`baselineInt()`	Baseline for a JMH method call returning an `int`.
`long`	`baselineLong()`	Baseline for a JMH method call returning a `long`.
`int`	`nextInt(PhiloxGenerationPerformance.Sources sources)`	Exercise the `UniformRandomProvider.nextInt()` method.
`long`	`nextLong(PhiloxGenerationPerformance.Sources sources)`	Exercise the `UniformRandomProvider.nextLong()` method.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PhiloxGenerationPerformance
```
public PhiloxGenerationPerformance()
```
- Method Detail
  - baselineInt
```
public int baselineInt()
```
    Baseline for a JMH method call returning an int.
    
    Returns:
    
    the value
  - baselineLong
```
public long baselineLong()
```
    Baseline for a JMH method call returning a long.
    
    Returns:
    
    the value
  - nextInt
```
public int nextInt(PhiloxGenerationPerformance.Sources sources)
```
    Exercise the UniformRandomProvider.nextInt() method.
    
    Parameters:
    
    sources - Source of randomness.
    
    Returns:
    
    the int
  - nextLong
```
public long nextLong(PhiloxGenerationPerformance.Sources sources)
```
    Exercise the UniformRandomProvider.nextLong() method.
    
    Parameters:
    
    sources - Source of randomness.
    
    Returns:
    
    the long