diff --git a/performance/src/main/kotlin/org/jetbrains/ring/Utils.kt b/performance/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt
similarity index 94%
rename from performance/src/main/kotlin/org/jetbrains/ring/Utils.kt
rename to performance/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt
index 4d8aaca0cae..5b8081fe47d 100644
--- a/performance/src/main/kotlin/org/jetbrains/ring/Utils.kt
+++ b/performance/src/main/kotlin-jvm/org/jetbrains/ring/Utils.kt
@@ -16,12 +16,9 @@
 
 package org.jetbrains.ring
 
-import kotlin.system.measureNanoTime
-
 //-----------------------------------------------------------------------------//
 
 class Blackhole {
-    @konan.ThreadLocal
     companion object {
         var consumer = 0
         fun consume(value: Any) {
@@ -33,7 +30,6 @@ class Blackhole {
 //-----------------------------------------------------------------------------//
 
 class Random() {
-    @konan.ThreadLocal
     companion object {
         var seedInt = 0
         fun nextInt(boundary: Int = 100): Int {
diff --git a/performance/src/main/kotlin-native/cleanup.kt b/performance/src/main/kotlin-native/cleanup.kt
index dd40889bb41..9169f21f2ea 100644
--- a/performance/src/main/kotlin-native/cleanup.kt
+++ b/performance/src/main/kotlin-native/cleanup.kt
@@ -1,5 +1,5 @@
 package org.jetbrains.ring
 
-import konan.internal.GC
+import kotlin.native.internal.GC
 
 fun cleanup() { GC.collect() }
\ No newline at end of file
diff --git a/performance/src/main/kotlin-native/org/jetbrains/ring/Utils.kt b/performance/src/main/kotlin-native/org/jetbrains/ring/Utils.kt
new file mode 100644
index 00000000000..ee166e73002
--- /dev/null
+++ b/performance/src/main/kotlin-native/org/jetbrains/ring/Utils.kt
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.ring
+
+//-----------------------------------------------------------------------------//
+
+class Blackhole {
+    @kotlin.native.ThreadLocal
+    companion object {
+        var consumer = 0
+        fun consume(value: Any) {
+            consumer += value.hashCode()
+        }
+    }
+}
+
+//-----------------------------------------------------------------------------//
+
+class Random() {
+    @kotlin.native.ThreadLocal
+    companion object {
+        var seedInt = 0
+        fun nextInt(boundary: Int = 100): Int {
+            seedInt = (3 * seedInt + 11) % boundary
+            return seedInt
+        }
+
+        var seedDouble: Double = 0.1
+        fun nextDouble(boundary: Double = 100.0): Double {
+            seedDouble = (7.0 * seedDouble + 7.0) % boundary
+            return seedDouble
+        }
+    }
+}