Fix benchmark parameters.

  * Use fork( 1 ) to avoid potential dependency of results on execution order.
  * Longer warmup for GaussBenchmark.

Author: tpietzsch

src/test/java/net/imglib2/algorithm/convolution/ConvolverBenchmark.java

@@ -111,7 +111,7 @@ public static void main( String[] args ) throws RunnerException
 	{
 		Options opt = new OptionsBuilder()
 				.include( ConvolverBenchmark.class.getSimpleName() )
-				.forks( 0 )
+				.forks( 1 )
 				.warmupIterations( 8 )
 				.measurementIterations( 8 )
 				.warmupTime( TimeValue.milliseconds( 100 ) )

src/test/java/net/imglib2/algorithm/convolution/GaussBenchmark.java

@@ -64,7 +64,7 @@ public static void main( String[] args ) throws RunnerException
 		Options opt = new OptionsBuilder()
 				.include( GaussBenchmark.class.getSimpleName() )
 				.forks( 1 )
-				.warmupIterations( 4 )
+				.warmupIterations( 8 )
 				.measurementIterations( 8 )
 				.warmupTime( TimeValue.milliseconds( 100 ) )
 				.measurementTime( TimeValue.milliseconds( 100 ) )