JMH Benchmarks Gradle Config

- this allows running benchmarks
- config is hardcoded right now
- wasn't able to get uberjar/shadowjar functionality working (ReactiveX#963 (comment))

build.gradle

@@ -12,7 +12,7 @@ buildscript {
         mavenCentral()
         jcenter()
     }
-
+	
     apply from: file('gradle/buildscript.gradle'), to: buildscript 
 }
 
@@ -81,6 +81,28 @@ subprojects {
 	task benchmarks(type: JavaExec) {
 		main = 'org.openjdk.jmh.Main'
 		classpath = sourceSets.perf.runtimeClasspath + sourceSets.main.output
+		maxHeapSize = "512m"
+//		args '-h' // help output
+		args '-f' // fork
+		args '1' 
+		args '-tu' // time unit
+		args 'ns'
+		args '-bm' // benchmark mode
+		args 'avgt'
+		args '-wi' // warmup iterations
+		args '5' 
+		args '-i' // test iterations
+		args '5' 
+		args '-r' // time per execution in seconds
+		args '1'
+//		args '-prof' // profilers
+//		args 'HS_GC' // HotSpot (tm) memory manager (GC) profiling via implementation-specific MBeans
+//		args 'HS_RT' // HotSpot (tm) runtime profiling via implementation-specific MBeans
+//		args 'HS_THR' // HotSpot (tm) threading subsystem via implementation-specific MBeans
+//		args 'HS_COMP' // HotSpot (tm) JIT compiler profiling via implementation-specific MBeans
+//		args 'HS_CL' // HotSpot (tm) classloader profiling via implementation-specific MBeans
+//		args 'STACK' // Simple and naive Java stack profiler
+//		args '.*OperatorSerializePerf.*' // for running only a specific test
 	}
 
 }