diff --git a/RxTests/PerformanceTests/main.swift b/RxTests/PerformanceTests/main.swift
index 53ce2b89..57d74db5 100644
--- a/RxTests/PerformanceTests/main.swift
+++ b/RxTests/PerformanceTests/main.swift
@@ -9,6 +9,8 @@
 import Foundation
 import RxSwift
 import RxCocoa
+import AppKit
+import CoreLocation
 
 let NumberOfIterations = 1000
 
@@ -45,13 +47,24 @@ func measureMemoryUsage(@noescape work: () -> ()) -> (bytesAllocated: UInt64, al
     return (approxValuePerIteration(bytesAfter - bytes), approxValuePerIteration(allocationsAfter - allocations))
 }
 
+let bechmarkTime = true
+
 func compareTwoImplementations(@noescape first first: () -> (), @noescape second: () -> ()) {
     // first warm up to keep it fair
     first()
     second()
 
-    let time1 = measureTime(first)
-    let time2 = measureTime(second)
+    let time1: UInt64
+    let time2: UInt64
+
+    if bechmarkTime {
+        time1 = measureTime(first)
+        time2 = measureTime(second)
+    }
+    else {
+        time1 = 0
+        time2 = 0
+    }
 
     registerMallocHooks()
 
@@ -72,6 +85,18 @@ func compareTwoImplementations(@noescape first first: () -> (), @noescape second
 }
 
 compareTwoImplementations(first: {
+    let publishSubject = PublishSubject<Int>()
+
+    publishSubject
+        .shareReplay(1)
+        .subscribeNext { _ in
+            
+        }
+
+
+    for i in 0..<100 {
+        publishSubject.on(.Next(i))
+    }
 
 }, second: {
     
diff --git a/RxTests/RxTests.xcodeproj/project.pbxproj b/RxTests/RxTests.xcodeproj/project.pbxproj
index 0feddd04..97e01155 100644
--- a/RxTests/RxTests.xcodeproj/project.pbxproj
+++ b/RxTests/RxTests.xcodeproj/project.pbxproj
@@ -51,6 +51,8 @@
 		C836EA081B8A76CD00AB941D /* RxSwift.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C836EA001B8A76A900AB941D /* RxSwift.framework */; };
 		C84B8FC21B89D0D500C9CCCF /* BagTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = C84B8FC11B89D0D500C9CCCF /* BagTest.swift */; };
 		C84B8FC31B89D0D500C9CCCF /* BagTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = C84B8FC11B89D0D500C9CCCF /* BagTest.swift */; };
+		C84CC4E91BDADA0B00E06A64 /* RxSwift.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C836EA001B8A76A900AB941D /* RxSwift.framework */; };
+		C84CC4EB1BDAEDF700E06A64 /* RxCocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C84CC4EA1BDAEDF700E06A64 /* RxCocoa.framework */; };
 		C85F4E431B7F70EA00A866C7 /* CompositeObserverTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = C85F4E421B7F70EA00A866C7 /* CompositeObserverTest.swift */; };
 		C85F4E441B7F70EA00A866C7 /* CompositeObserverTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = C85F4E421B7F70EA00A866C7 /* CompositeObserverTest.swift */; };
 		C8633AE51B0A9FF300375D60 /* KVOObservableTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = C8633AE41B0A9FF300375D60 /* KVOObservableTests.swift */; };
@@ -217,6 +219,8 @@
 		C81CC92A1B513FD400915606 /* NSObject+RxTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "NSObject+RxTests.swift"; sourceTree = "<group>"; };
 		C836EA001B8A76A900AB941D /* RxSwift.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; path = RxSwift.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		C84B8FC11B89D0D500C9CCCF /* BagTest.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = BagTest.swift; sourceTree = "<group>"; };
+		C84CC4E71BDAD9FF00E06A64 /* RxBlocking.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = RxBlocking.framework; path = ../build/Debug/RxBlocking.framework; sourceTree = "<group>"; };
+		C84CC4EA1BDAEDF700E06A64 /* RxCocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = RxCocoa.framework; path = ../build/Debug/RxCocoa.framework; sourceTree = "<group>"; };
 		C85F4E421B7F70EA00A866C7 /* CompositeObserverTest.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CompositeObserverTest.swift; sourceTree = "<group>"; };
 		C8633AE41B0A9FF300375D60 /* KVOObservableTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = KVOObservableTests.swift; sourceTree = "<group>"; };
 		C868D0F81BB76A29003D1474 /* PerformanceTools.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PerformanceTools.swift; sourceTree = "<group>"; };
@@ -262,6 +266,8 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				C84CC4EB1BDAEDF700E06A64 /* RxCocoa.framework in Frameworks */,
+				C84CC4E91BDADA0B00E06A64 /* RxSwift.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -291,6 +297,8 @@
 		C81108151AF50DDA001C13E4 = {
 			isa = PBXGroup;
 			children = (
+				C84CC4EA1BDAEDF700E06A64 /* RxCocoa.framework */,
+				C84CC4E71BDAD9FF00E06A64 /* RxBlocking.framework */,
 				C8A468CE1B8A897D00BF917B /* RxBlocking.framework */,
 				C8A468CC1B8A897800BF917B /* RxCocoa.framework */,
 				C836EA001B8A76A900AB941D /* RxSwift.framework */,