diff --git a/GCDFetchFeed/GCDFetchFeed.xcodeproj/project.pbxproj b/GCDFetchFeed/GCDFetchFeed.xcodeproj/project.pbxproj
index d1832f2..843af3a 100644
--- a/GCDFetchFeed/GCDFetchFeed.xcodeproj/project.pbxproj
+++ b/GCDFetchFeed/GCDFetchFeed.xcodeproj/project.pbxproj
@@ -125,6 +125,10 @@
 		0A35AD6C1F45B41E00780172 /* DCHook.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = DCHook.m; sourceTree = "<group>"; };
 		0A35AD711F45B48400780172 /* UIViewController+clsCall.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "UIViewController+clsCall.h"; sourceTree = "<group>"; };
 		0A35AD721F45B48400780172 /* UIViewController+clsCall.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "UIViewController+clsCall.m"; sourceTree = "<group>"; };
+		0A600C1D1FC4643E00771AF1 /* SMStateMachine.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SMStateMachine.m; sourceTree = "<group>"; };
+		0A600C1E1FC4643E00771AF1 /* SMStateMachine.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SMStateMachine.h; sourceTree = "<group>"; };
+		0A600C1F1FC4643E00771AF1 /* SMState.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = SMState.h; sourceTree = "<group>"; };
+		0A600C201FC4643E00771AF1 /* SMState.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = SMState.m; sourceTree = "<group>"; };
 		0A8B09DB1D6DA2BB00BE4FEC /* STMAssembleMaker.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = STMAssembleMaker.h; sourceTree = "<group>"; };
 		0A8B09DC1D6DA2BB00BE4FEC /* STMAssembleMaker.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = STMAssembleMaker.m; sourceTree = "<group>"; };
 		0A8B09DD1D6DA2BB00BE4FEC /* STMAssembleView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = STMAssembleView.h; sourceTree = "<group>"; };
@@ -306,6 +310,17 @@
 			name = Hook;
 			sourceTree = "<group>";
 		};
+		0A600C1C1FC4640200771AF1 /* StateMachine */ = {
+			isa = PBXGroup;
+			children = (
+				0A600C1E1FC4643E00771AF1 /* SMStateMachine.h */,
+				0A600C1D1FC4643E00771AF1 /* SMStateMachine.m */,
+				0A600C1F1FC4643E00771AF1 /* SMState.h */,
+				0A600C201FC4643E00771AF1 /* SMState.m */,
+			);
+			name = StateMachine;
+			sourceTree = "<group>";
+		};
 		0A8B09DA1D6DA2AD00BE4FEC /* UI */ = {
 			isa = PBXGroup;
 			children = (
@@ -363,6 +378,7 @@
 		3E58A8611C50B86C0026A610 /* Vendors */ = {
 			isa = PBXGroup;
 			children = (
+				0A600C1C1FC4640200771AF1 /* StateMachine */,
 				0A35AD6A1F45B41400780172 /* Hook */,
 				0A149B991DE5C9210000D58F /* Cache */,
 				0A8B09DA1D6DA2AD00BE4FEC /* UI */,
diff --git a/GCDFetchFeed/GCDFetchFeed/AppDelegate.m b/GCDFetchFeed/GCDFetchFeed/AppDelegate.m
index 98ce2cf..b61bf78 100644
--- a/GCDFetchFeed/GCDFetchFeed/AppDelegate.m
+++ b/GCDFetchFeed/GCDFetchFeed/AppDelegate.m
@@ -24,7 +24,7 @@ @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     //这里是做卡顿监测
-    [[SMLagMonitor shareInstance] beginMonitor];
+//    [[SMLagMonitor shareInstance] beginMonitor];
     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
     //首页
     SMRootViewController *rootVC = [[SMRootViewController alloc] init];
diff --git a/GCDFetchFeed/GCDFetchFeed/SMRootViewController.m b/GCDFetchFeed/GCDFetchFeed/SMRootViewController.m
index 8bbe531..5806ffe 100644
--- a/GCDFetchFeed/GCDFetchFeed/SMRootViewController.m
+++ b/GCDFetchFeed/GCDFetchFeed/SMRootViewController.m
@@ -112,19 +112,19 @@ - (void)viewDidLoad {
         [self.navigationController pushViewController:feedList animated:YES];
     }];
     
-    //monitor
-    [self.view addSubview:self.stackBt];
-    [self.view addSubview:self.clsCallBt];
-    [self.clsCallBt mas_makeConstraints:^(MASConstraintMaker *make) {
-        make.top.equalTo(self.view).offset(20);
-        make.right.equalTo(self.view).offset(-10);
-        make.size.mas_equalTo(CGSizeMake(40, 40));
-    }];
-    [self.stackBt mas_makeConstraints:^(MASConstraintMaker *make) {
-        make.top.equalTo(self.clsCallBt);
-        make.right.equalTo(self.clsCallBt.mas_left).offset(-10);
-        make.size.mas_equalTo(CGSizeMake(40, 40));
-    }];
+    //monitor 显示性能监控
+//    [self.view addSubview:self.stackBt];
+//    [self.view addSubview:self.clsCallBt];
+//    [self.clsCallBt mas_makeConstraints:^(MASConstraintMaker *make) {
+//        make.top.equalTo(self.view).offset(20);
+//        make.right.equalTo(self.view).offset(-10);
+//        make.size.mas_equalTo(CGSizeMake(40, 40));
+//    }];
+//    [self.stackBt mas_makeConstraints:^(MASConstraintMaker *make) {
+//        make.top.equalTo(self.clsCallBt);
+//        make.right.equalTo(self.clsCallBt.mas_left).offset(-10);
+//        make.size.mas_equalTo(CGSizeMake(40, 40));
+//    }];
 }
 
 #pragma mark - private
diff --git a/GCDFetchFeed/GCDFetchFeed/SMState.h b/GCDFetchFeed/GCDFetchFeed/SMState.h
new file mode 100644
index 0000000..701aed5
--- /dev/null
+++ b/GCDFetchFeed/GCDFetchFeed/SMState.h
@@ -0,0 +1,12 @@
+//
+//  SMState.h
+//  CarpoolBusiness
+//
+//  Created by DaiMing on 2017/11/21.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface SMState : NSObject
+
+@end
diff --git a/GCDFetchFeed/GCDFetchFeed/SMState.m b/GCDFetchFeed/GCDFetchFeed/SMState.m
new file mode 100644
index 0000000..9beb903
--- /dev/null
+++ b/GCDFetchFeed/GCDFetchFeed/SMState.m
@@ -0,0 +1,12 @@
+//
+//  SMState.m
+//  CarpoolBusiness
+//
+//  Created by DaiMing on 2017/11/21.
+//
+
+#import "SMState.h"
+
+@implementation SMState
+
+@end
diff --git a/GCDFetchFeed/GCDFetchFeed/SMStateMachine.h b/GCDFetchFeed/GCDFetchFeed/SMStateMachine.h
new file mode 100644
index 0000000..b4a742d
--- /dev/null
+++ b/GCDFetchFeed/GCDFetchFeed/SMStateMachine.h
@@ -0,0 +1,20 @@
+//
+//  SMStateMachine.h
+//  CarpoolBusiness
+//
+//  Created by DaiMing on 2017/11/21.
+//
+
+#import <Foundation/Foundation.h>
+@class SMState;
+
+@interface SMStateMachine : NSObject
+@property (nonatomic, readonly) NSSet *states;
+@property (nonatomic, strong) SMState *currentState;
+
+- (void)addStates:(NSArray *)states;
+
+- (SMState *)stateNamed:(NSString *)name;
+
+
+@end
diff --git a/GCDFetchFeed/GCDFetchFeed/SMStateMachine.m b/GCDFetchFeed/GCDFetchFeed/SMStateMachine.m
new file mode 100644
index 0000000..6cc7797
--- /dev/null
+++ b/GCDFetchFeed/GCDFetchFeed/SMStateMachine.m
@@ -0,0 +1,12 @@
+//
+//  SMStateMachine.m
+//  CarpoolBusiness
+//
+//  Created by DaiMing on 2017/11/21.
+//
+
+#import "SMStateMachine.h"
+
+@implementation SMStateMachine
+
+@end