diff --git a/performance/numerical/src/main/kotlin-jvm/launcher.kt b/performance/numerical/src/main/kotlin-jvm/launcher.kt
index 5a46d55d80b..1938943c781 100644
--- a/performance/numerical/src/main/kotlin-jvm/launcher.kt
+++ b/performance/numerical/src/main/kotlin-jvm/launcher.kt
@@ -14,6 +14,8 @@ actual class NumericalLauncher : Launcher() {
 }
 
 fun jvmBellardPi() {
-    for (n in 1 .. 1000 step 9)
-            pi_nth_digit(n)
+    for (n in 1 .. 1000 step 9) {
+        val result = pi_nth_digit(n)
+        Blackhole.consume(result)
+    }
 }
diff --git a/performance/numerical/src/main/kotlin-native/launcher.kt b/performance/numerical/src/main/kotlin-native/launcher.kt
index e60d527df7d..af7cdef7fb7 100644
--- a/performance/numerical/src/main/kotlin-native/launcher.kt
+++ b/performance/numerical/src/main/kotlin-native/launcher.kt
@@ -15,8 +15,10 @@ actual class NumericalLauncher : Launcher() {
 }
 
 fun konanBellardPi() {
-    for (n in 1 .. 1000 step 9)
-            pi_nth_digit(n)
+    for (n in 1 .. 1000 step 9) {
+        val result = pi_nth_digit(n)
+        Blackhole.consume(result)
+    }
 }
 
 fun clangBellardPi() {
diff --git a/performance/numerical/src/main/kotlin/main.kt b/performance/numerical/src/main/kotlin/main.kt
index 9f1d75de188..6d68e22d419 100644
--- a/performance/numerical/src/main/kotlin/main.kt
+++ b/performance/numerical/src/main/kotlin/main.kt
@@ -17,4 +17,4 @@ fun main(args: Array<String>) {
                     arguments.filter, arguments.filterRegex, arguments.verbose)
         } else emptyList()
     }, benchmarksListAction = launcher::benchmarksListAction)
-}
+}
\ No newline at end of file
diff --git a/performance/ring/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt b/performance/ring/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt
index d33c0afee21..6f475fcb238 100644
--- a/performance/ring/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt
+++ b/performance/ring/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt
@@ -15,20 +15,6 @@
  */
 
 package org.jetbrains.ring
-
-import java.io.File
-
-//-----------------------------------------------------------------------------//
-
-actual class Blackhole {
-    actual companion object {
-        actual var consumer = 0
-        actual fun consume(value: Any) {
-            consumer += value.hashCode()
-        }
-    }
-}
-
 //-----------------------------------------------------------------------------//
 
 actual class Random actual constructor() {
diff --git a/performance/ring/src/main/kotlin-native/org/jetbrains/ring/Utils.kt b/performance/ring/src/main/kotlin-native/org/jetbrains/ring/Utils.kt
index 7721ace5b58..4252b9954b3 100644
--- a/performance/ring/src/main/kotlin-native/org/jetbrains/ring/Utils.kt
+++ b/performance/ring/src/main/kotlin-native/org/jetbrains/ring/Utils.kt
@@ -16,20 +16,6 @@
 
 package org.jetbrains.ring
 
-import platform.posix.*
-
-//-----------------------------------------------------------------------------//
-
-actual class Blackhole {
-    @kotlin.native.ThreadLocal
-    actual companion object {
-        actual var consumer = 0
-        actual fun consume(value: Any) {
-            consumer += value.hashCode()
-        }
-    }
-}
-
 //-----------------------------------------------------------------------------//
 
 actual class Random actual constructor() {
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassBaselineBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassBaselineBenchmark.kt
index c7bb78f8a95..114494ff599 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassBaselineBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassBaselineBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 open class ClassBaselineBenchmark {
 
     //Benchmark 
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassStreamBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassStreamBenchmark.kt
index 4ab4d981436..793824ac9bc 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassStreamBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/ClassStreamBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 open class ClassStreamBenchmark {
     private var _data: Iterable<Value>? = null
     val data: Iterable<Value>
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/ElvisBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/ElvisBenchmark.kt
index 8b80fa3635e..76e14666fad 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/ElvisBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/ElvisBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 open class ElvisBenchmark {
 
     class Value(var value: Int)
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/IntBaselineBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/IntBaselineBenchmark.kt
index a1ac5127cd3..32a152f7cd4 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/IntBaselineBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/IntBaselineBenchmark.kt
@@ -16,6 +16,7 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
 
 open class IntBaselineBenchmark {
 
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/IntStreamBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/IntStreamBenchmark.kt
index 3989ad889a0..49b8bb579c3 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/IntStreamBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/IntStreamBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 open class IntStreamBenchmark {
     private var _data: Iterable<Int>? = null
     val data: Iterable<Int>
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/LoopBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/LoopBenchmark.kt
index a07434eabf3..72de74fb1b5 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/LoopBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/LoopBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 open class LoopBenchmark {
     lateinit var arrayList: List<Value>
     lateinit var array: Array<Value>
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/SwitchBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/SwitchBenchmark.kt
index 34250c7d1e0..42b33629b2d 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/SwitchBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/SwitchBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 val SPARSE_SWITCH_CASES = intArrayOf(11, 29, 47, 71, 103,
                                      149, 175, 227, 263, 307,
                                      361, 487, 563, 617, 677,
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/Utils.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/Utils.kt
index 42faefc870d..ce22326fb4d 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/Utils.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/Utils.kt
@@ -18,13 +18,6 @@ package org.jetbrains.ring
 
 const val BENCHMARK_SIZE = 10000
 
-expect class Blackhole {
-    companion object {
-        var consumer: Int
-        fun consume(value: Any)
-    }
-}
-
 expect class Random() {
     companion object {
         var seedInt: Int
diff --git a/performance/ring/src/main/kotlin/org/jetbrains/ring/WithIndiciesBenchmark.kt b/performance/ring/src/main/kotlin/org/jetbrains/ring/WithIndiciesBenchmark.kt
index b4fcc841e99..0753393abee 100644
--- a/performance/ring/src/main/kotlin/org/jetbrains/ring/WithIndiciesBenchmark.kt
+++ b/performance/ring/src/main/kotlin/org/jetbrains/ring/WithIndiciesBenchmark.kt
@@ -16,6 +16,8 @@
 
 package org.jetbrains.ring
 
+import org.jetbrains.benchmarksLauncher.Blackhole
+
 open class WithIndiciesBenchmark {
     private var _data: ArrayList<Value>? = null
     val data: ArrayList<Value>
diff --git a/performance/shared/src/main/kotlin-jvm/org/jetbrains/benchmarksLauncher/Utils.kt b/performance/shared/src/main/kotlin-jvm/org/jetbrains/benchmarksLauncher/Utils.kt
index 89bd0e0834a..1bf91970850 100644
--- a/performance/shared/src/main/kotlin-jvm/org/jetbrains/benchmarksLauncher/Utils.kt
+++ b/performance/shared/src/main/kotlin-jvm/org/jetbrains/benchmarksLauncher/Utils.kt
@@ -45,3 +45,14 @@ actual fun printStderr(message: String) {
 actual fun currentTime(): String =
         SimpleDateFormat("HH:mm:ss").format(Date())
 
+actual fun nanoTime(): Long = System.nanoTime()
+
+actual class Blackhole {
+    actual companion object {
+        actual var consumer = 0
+        actual fun consume(value: Any) {
+            consumer += value.hashCode()
+        }
+    }
+}
+
diff --git a/performance/shared/src/main/kotlin-native/common/org/jetbrains/benchmarksLauncher/Utils.kt b/performance/shared/src/main/kotlin-native/common/org/jetbrains/benchmarksLauncher/Utils.kt
index 0c2d2e71f97..000c40c2818 100644
--- a/performance/shared/src/main/kotlin-native/common/org/jetbrains/benchmarksLauncher/Utils.kt
+++ b/performance/shared/src/main/kotlin-native/common/org/jetbrains/benchmarksLauncher/Utils.kt
@@ -49,3 +49,14 @@ actual fun printStderr(message: String) {
     fflush(STDERR)
 }
 
+actual fun nanoTime(): Long = kotlin.system.getTimeNanos()
+
+actual class Blackhole {
+    @kotlin.native.ThreadLocal
+    actual companion object {
+        actual var consumer = 0
+        actual fun consume(value: Any) {
+            consumer += value.hashCode()
+        }
+    }
+}
\ No newline at end of file
diff --git a/performance/shared/src/main/kotlin/org/jetbrains/benchmarksLauncher/Utils.kt b/performance/shared/src/main/kotlin/org/jetbrains/benchmarksLauncher/Utils.kt
index 33431b16eb7..a2a03c203ae 100644
--- a/performance/shared/src/main/kotlin/org/jetbrains/benchmarksLauncher/Utils.kt
+++ b/performance/shared/src/main/kotlin/org/jetbrains/benchmarksLauncher/Utils.kt
@@ -26,4 +26,13 @@ expect fun cleanup()
 
 expect fun printStderr(message: String)
 
-expect fun currentTime(): String
\ No newline at end of file
+expect fun currentTime(): String
+
+expect fun nanoTime(): Long
+
+expect class Blackhole {
+    companion object {
+        var consumer: Int
+        fun consume(value: Any)
+    }
+}
\ No newline at end of file