diff --git a/Libraries/Utilities/BridgeProfiling.js b/Libraries/Utilities/BridgeProfiling.js
index 1b800901f..7f6b8860c 100644
--- a/Libraries/Utilities/BridgeProfiling.js
+++ b/Libraries/Utilities/BridgeProfiling.js
@@ -29,9 +29,9 @@ var BridgeProfiling = {
     }
   },
 
-  profileEnd(profileName?: string) {
+  profileEnd() {
     if (GLOBAL.__BridgeProfilingIsProfiling) {
-      console.profileEnd(profileName);
+      console.profileEnd();
     }
   },
 
@@ -41,14 +41,14 @@ var BridgeProfiling = {
     ReactPerf.measure = function (objName, fnName, func) {
       func = originalMeasure.call(ReactPerf, objName, fnName, func);
       return function (component) {
-        BridgeProfiling.profile();
-        var ret = func.apply(this, arguments);
         if (GLOBAL.__BridgeProfilingIsProfiling) {
           var name = this._instance && this._instance.constructor &&
             (this._instance.constructor.displayName ||
              this._instance.constructor.name);
-          BridgeProfiling.profileEnd(`${objName}.${fnName}(${name})`);
+          BridgeProfiling.profile(`${objName}.${fnName}(${name})`);
         }
+        var ret = func.apply(this, arguments);
+        BridgeProfiling.profileEnd();
         return ret;
       };
     };
diff --git a/React/Base/RCTBatchedBridge.m b/React/Base/RCTBatchedBridge.m
index c8387242c..d05625720 100644
--- a/React/Base/RCTBatchedBridge.m
+++ b/React/Base/RCTBatchedBridge.m
@@ -167,11 +167,11 @@ id<RCTJavaScriptExecutor> RCTGetLatestExecutor(void)
 - (void)loadSource:(RCTSourceLoadBlock)_onSourceLoad
 {
     RCTPerformanceLoggerStart(RCTPLScriptDownload);
-    RCTProfileBeginEvent();
+    int cookie = RCTProfileBeginAsyncEvent(0, @"JavaScript download", nil);
 
     RCTSourceLoadBlock onSourceLoad = ^(NSError *error, NSString *source) {
       RCTPerformanceLoggerEnd(RCTPLScriptDownload);
-      RCTProfileEndEvent(@"JavaScript download", @"init,download", @[]);
+      RCTProfileEndAsyncEvent(0, @"init,download", cookie, @"JavaScript download", nil);
 
       if (error) {
         NSArray *stack = [error userInfo][@"stack"];
@@ -517,7 +517,9 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   }
 }
 
-- (void)enqueueApplicationScript:(NSString *)script url:(NSURL *)url onComplete:(RCTJavaScriptCompleteBlock)onComplete
+- (void)enqueueApplicationScript:(NSString *)script
+                             url:(NSURL *)url
+                      onComplete:(RCTJavaScriptCompleteBlock)onComplete
 {
   RCTAssert(onComplete != nil, @"onComplete block passed in should be non-nil");
 
@@ -531,20 +533,21 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
       return;
     }
 
-    RCTProfileBeginEvent();
+    RCTProfileBeginEvent(0, @"FetchApplicationScriptCallbacks", nil);
     [_javaScriptExecutor executeJSCall:@"BatchedBridge"
                                 method:@"flushedQueue"
                              arguments:@[]
-                              callback:^(id json, NSError *error) {
-                                RCTProfileEndEvent(@"FetchApplicationScriptCallbacks", @"js_call,init", @{
-                                  @"json": RCTNullIfNil(json),
-                                  @"error": RCTNullIfNil(error),
-                                });
+                              callback:^(id json, NSError *error)
+     {
+       RCTProfileEndEvent(0, @"js_call,init", @{
+         @"json": RCTNullIfNil(json),
+         @"error": RCTNullIfNil(error),
+       });
 
-                                [self _handleBuffer:json];
+       [self _handleBuffer:json];
 
-                                onComplete(error);
-                              }];
+       onComplete(error);
+     }];
   }];
 }
 
@@ -565,7 +568,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   __weak RCTBatchedBridge *weakSelf = self;
   [_javaScriptExecutor executeBlockOnJavaScriptQueue:^{
     RCTProfileEndFlowEvent();
-    RCTProfileBeginEvent();
+    RCTProfileBeginEvent(0, @"enqueue_call", nil);
 
     RCTBatchedBridge *strongSelf = weakSelf;
     if (!strongSelf.isValid || !strongSelf->_scheduledCallbacks || !strongSelf->_scheduledCalls) {
@@ -588,11 +591,13 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
       [strongSelf->_scheduledCalls addObject:call];
     }
 
-    RCTProfileEndEvent(@"enqueue_call", @"objc_call", call);
+    RCTProfileEndEvent(0, @"objc_call", call);
   }];
 }
 
-- (void)_actuallyInvokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args
+- (void)_actuallyInvokeAndProcessModule:(NSString *)module
+                                 method:(NSString *)method
+                              arguments:(NSArray *)args
 {
   RCTAssertJSThread();
 
@@ -678,7 +683,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 
     [moduleData dispatchBlock:^{
       RCTProfileEndFlowEvent();
-      RCTProfileBeginEvent();
+      RCTProfileBeginEvent(0, RCTCurrentThreadName(), nil);
 
       NSOrderedSet *calls = [buckets objectForKey:moduleData];
       @autoreleasepool {
@@ -691,7 +696,9 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
         }
       }
 
-      RCTProfileEndEvent(RCTCurrentThreadName(), @"objc_call,dispatch_async", @{ @"calls": @(calls.count) });
+      RCTProfileEndEvent(0, @"objc_call,dispatch_async", @{
+        @"calls": @(calls.count),
+      });
     }];
   }
 
@@ -719,7 +726,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
     return NO;
   }
 
-  RCTProfileBeginEvent();
+  RCTProfileBeginEvent(0, @"Invoke callback", nil);
 
   RCTModuleData *moduleData = _moduleDataByID[moduleID];
   if (RCT_DEBUG && !moduleData) {
@@ -743,7 +750,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
     }
   }
 
-  RCTProfileEndEvent(@"Invoke callback", @"objc_call", @{
+  RCTProfileEndEvent(0, @"objc_call", @{
     @"module": NSStringFromClass(method.moduleClass),
     @"method": method.JSMethodName,
     @"selector": NSStringFromSelector(method.selector),
@@ -756,7 +763,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 - (void)_jsThreadUpdate:(CADisplayLink *)displayLink
 {
   RCTAssertJSThread();
-  RCTProfileBeginEvent();
+  RCTProfileBeginEvent(0, @"DispatchFrameUpdate", nil);
 
   RCTFrameUpdate *frameUpdate = [[RCTFrameUpdate alloc] initWithDisplayLink:displayLink];
   for (RCTModuleData *moduleData in _frameUpdateObservers) {
@@ -767,9 +774,9 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 
       [moduleData dispatchBlock:^{
         RCTProfileEndFlowEvent();
-        RCTProfileBeginEvent();
+        RCTProfileBeginEvent(0, name, nil);
         [observer didUpdateFrame:frameUpdate];
-        RCTProfileEndEvent(name, @"objc_call,fps", nil);
+        RCTProfileEndEvent(0, @"objc_call,fps", nil);
       }];
     }
   }
@@ -777,7 +784,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   NSArray *calls = [_scheduledCallbacks.allObjects arrayByAddingObjectsFromArray:_scheduledCalls];
 
   RCT_IF_DEV(
-    RCTProfileImmediateEvent(@"JS Thread Tick", displayLink.timestamp, @"g");
+    RCTProfileImmediateEvent(0, @"JS Thread Tick", 'g');
 
     for (NSDictionary *call in calls) {
       _RCTProfileEndFlowEvent(call[@"call_id"]);
@@ -792,7 +799,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
                                 arguments:@[[calls valueForKey:@"js_args"]]];
   }
 
-  RCTProfileEndEvent(@"DispatchFrameUpdate", @"objc_call", nil);
+  RCTProfileEndEvent(0, @"objc_call", nil);
 
   dispatch_async(dispatch_get_main_queue(), ^{
     [self.perfStats.jsGraph onTick:displayLink.timestamp];
@@ -803,7 +810,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 {
   RCTAssertMainThread();
 
-  RCTProfileImmediateEvent(@"VSYNC", displayLink.timestamp, @"g");
+  RCTProfileImmediateEvent(0, @"VSYNC", 'g');
 
   _modulesByName == nil ?: [self.perfStats.uiGraph onTick:displayLink.timestamp];
 }
diff --git a/React/Base/RCTProfile.h b/React/Base/RCTProfile.h
index 66cf40bf4..794f4a910 100644
--- a/React/Base/RCTProfile.h
+++ b/React/Base/RCTProfile.h
@@ -59,36 +59,42 @@ RCT_EXTERN NSString *RCTProfileEnd(RCTBridge *);
 /**
  * Collects the initial event information for the event and returns a reference ID
  */
-RCT_EXTERN NSNumber *_RCTProfileBeginEvent(void);
+RCT_EXTERN void RCTProfileBeginEvent(uint64_t tag,
+                                     NSString *name,
+                                     NSDictionary *args);
 
 /**
  * The ID returned by BeginEvent should then be passed into EndEvent, with the
  * rest of the event information. Just at this point the event will actually be
  * registered
  */
-RCT_EXTERN void _RCTProfileEndEvent(NSNumber *, NSString *, NSString *, id);
+RCT_EXTERN void RCTProfileEndEvent(uint64_t tag,
+                                   NSString *category,
+                                   NSDictionary *args);
 
 /**
- * This pair of macros implicitly handle the event ID when beginning and ending
- * an event, for both simplicity and performance reasons, this method is preferred
- *
- * NOTE: The EndEvent call has to be either, in the same scope of BeginEvent,
- * or in a sub-scope, otherwise the ID stored by BeginEvent won't be accessible
- * for EndEvent, in this case you may want to use the actual C functions.
+ * Collects the initial event information for the event and returns a reference ID
  */
-#define RCTProfileBeginEvent() \
-_Pragma("clang diagnostic push") \
-_Pragma("clang diagnostic ignored \"-Wshadow\"") \
-NSNumber *__rct_profile_id = _RCTProfileBeginEvent(); \
-_Pragma("clang diagnostic pop")
-
-#define RCTProfileEndEvent(name, category, args...) \
-_RCTProfileEndEvent(__rct_profile_id, name, category, args)
+RCT_EXTERN int RCTProfileBeginAsyncEvent(uint64_t tag,
+                                         NSString *name,
+                                         NSDictionary *args);
 
+/**
+ * The ID returned by BeginEvent should then be passed into EndEvent, with the
+ * rest of the event information. Just at this point the event will actually be
+ * registered
+ */
+RCT_EXTERN void RCTProfileEndAsyncEvent(uint64_t tag,
+                                        NSString *category,
+                                        int cookie,
+                                        NSString *name,
+                                        NSDictionary *args);
 /**
  * An event that doesn't have a duration (i.e. Notification, VSync, etc)
  */
-RCT_EXTERN void RCTProfileImmediateEvent(NSString *, NSTimeInterval , NSString *);
+RCT_EXTERN void RCTProfileImmediateEvent(uint64_t tag,
+                                         NSString *name,
+                                         char scope);
 
 /**
  * Helper to profile the duration of the execution of a block. This method uses
@@ -96,11 +102,11 @@ RCT_EXTERN void RCTProfileImmediateEvent(NSString *, NSTimeInterval , NSString *
  *
  * NOTE: The block can't expect any argument
  */
-#define RCTProfileBlock(block, category, arguments) \
+#define RCTProfileBlock(block, tag, category, arguments) \
 ^{ \
-  RCTProfileBeginEvent(); \
+  RCTProfileBeginEvent(tag, @(__PRETTY_FUNCTION__), nil); \
   block(); \
-  RCTProfileEndEvent([NSString stringWithFormat:@"[%@ %@]", NSStringFromClass([self class]), NSStringFromSelector(_cmd)], category, arguments); \
+  RCTProfileEndEvent(tag, category, arguments); \
 }
 
 /**
@@ -125,12 +131,12 @@ RCT_EXTERN void RCTProfileUnhookModules(RCTBridge *);
 #define RCTProfileInit(...)
 #define RCTProfileEnd(...) @""
 
-#define _RCTProfileBeginEvent(...) @0
 #define RCTProfileBeginEvent(...)
-
-#define _RCTProfileEndEvent(...)
 #define RCTProfileEndEvent(...)
 
+#define RCTProfileBeginAsyncEvent(...) 0
+#define RCTProfileEndAsyncEvent(...)
+
 #define RCTProfileImmediateEvent(...)
 
 #define RCTProfileBlock(block, ...) block
diff --git a/React/Base/RCTProfile.m b/React/Base/RCTProfile.m
index 2de44b206..85d5a799a 100644
--- a/React/Base/RCTProfile.m
+++ b/React/Base/RCTProfile.m
@@ -26,12 +26,6 @@ NSString *const RCTProfileDidEndProfiling = @"RCTProfileDidEndProfiling";
 
 #if RCT_DEV
 
-#pragma mark - Prototypes
-
-NSNumber *RCTProfileTimestamp(NSTimeInterval);
-NSString *RCTProfileMemory(vm_size_t);
-NSDictionary *RCTProfileGetMemoryUsage(void);
-
 #pragma mark - Constants
 
 NSString const *RCTProfileTraceEvents = @"traceEvents";
@@ -67,18 +61,18 @@ __VA_ARGS__ \
 
 #pragma mark - Private Helpers
 
-NSNumber *RCTProfileTimestamp(NSTimeInterval timestamp)
+static NSNumber *RCTProfileTimestamp(NSTimeInterval timestamp)
 {
   return @((timestamp - RCTProfileStartTime) * 1e6);
 }
 
-NSString *RCTProfileMemory(vm_size_t memory)
+static NSString *RCTProfileMemory(vm_size_t memory)
 {
   double mem = ((double)memory) / 1024 / 1024;
   return [NSString stringWithFormat:@"%.2lfmb", mem];
 }
 
-NSDictionary *RCTProfileGetMemoryUsage(void)
+static NSDictionary *RCTProfileGetMemoryUsage(void)
 {
   struct task_basic_info info;
   mach_msg_type_number_t size = sizeof(info);
@@ -97,6 +91,22 @@ NSDictionary *RCTProfileGetMemoryUsage(void)
   }
 }
 
+static NSDictionary *RCTProfileMergeArgs(NSDictionary *args0, NSDictionary *args1)
+{
+  args0 = RCTNilIfNull(args0);
+  args1 = RCTNilIfNull(args1);
+
+  if (!args0 && args1) {
+    args0 = args1;
+  } else if (args0 && args1) {
+    NSMutableDictionary *d = [args0 mutableCopy];
+    [d addEntriesFromDictionary:args1];
+    args0 = [d copy];
+  }
+
+  return RCTNullIfNil(args0);
+}
+
 #pragma mark - Module hooks
 
 static const char *RCTProfileProxyClassName(Class);
@@ -120,9 +130,9 @@ static void RCTProfileForwardInvocation(NSObject *self, __unused SEL cmd, NSInvo
 
   if ([object_getClass(self) instancesRespondToSelector:newSel]) {
     invocation.selector = newSel;
-    RCTProfileBeginEvent();
+    RCTProfileBeginEvent(0, name, nil);
     [invocation invoke];
-    RCTProfileEndEvent(name, @"objc_call,modules,auto", nil);
+    RCTProfileEndEvent(0, @"objc_call,modules,auto", nil);
   } else if ([self respondsToSelector:invocation.selector]) {
     [invocation invoke];
   } else {
@@ -248,45 +258,116 @@ NSString *RCTProfileEnd(RCTBridge *bridge)
   return log;
 }
 
-NSNumber *_RCTProfileBeginEvent(void)
+static NSMutableArray *RCTProfileGetThreadEvents(void)
 {
-  CHECK(@0);
-  RCTProfileLock(
-    NSNumber *eventID = @(++RCTProfileEventID);
-    RCTProfileOngoingEvents[eventID] = RCTProfileTimestamp(CACurrentMediaTime());
-  );
-  return eventID;
+  static NSString *const RCTProfileThreadEventsKey = @"RCTProfileThreadEventsKey";
+  NSMutableArray *threadEvents = [NSThread currentThread].threadDictionary[RCTProfileThreadEventsKey];
+  if (!threadEvents) {
+    threadEvents = [[NSMutableArray alloc] init];
+    [NSThread currentThread].threadDictionary[RCTProfileThreadEventsKey] = threadEvents;
+  }
+  return threadEvents;
 }
 
-void _RCTProfileEndEvent(NSNumber *eventID, NSString *name, NSString *categories, id args)
+void RCTProfileBeginEvent(uint64_t tag, NSString *name, NSDictionary *args)
 {
   CHECK();
+  NSMutableArray *events = RCTProfileGetThreadEvents();
+  [events addObject:@[
+    RCTProfileTimestamp(CACurrentMediaTime()),
+    @(tag),
+    name,
+    RCTNullIfNil(args),
+  ]];
+}
+
+void RCTProfileEndEvent(
+  __unused uint64_t tag,
+  NSString *category,
+  NSDictionary *args
+) {
+  CHECK();
+
+  NSMutableArray *events = RCTProfileGetThreadEvents();
+  NSArray *event = [events lastObject];
+  [events removeLastObject];
+
+  if (!event) {
+    return;
+  }
+
+  NSNumber *start = event[0];
+
   RCTProfileLock(
-    NSNumber *startTimestamp = RCTProfileOngoingEvents[eventID];
-    if (startTimestamp) {
+    RCTProfileAddEvent(RCTProfileTraceEvents,
+      @"name": event[2],
+      @"cat": category,
+      @"ph": @"X",
+      @"ts": start,
+      @"dur": @(RCTProfileTimestamp(CACurrentMediaTime()).doubleValue - start.doubleValue),
+      @"args": RCTProfileMergeArgs(event[3], args),
+    );
+  );
+}
+
+int RCTProfileBeginAsyncEvent(
+  __unused uint64_t tag,
+  NSString *name,
+  NSDictionary *args
+) {
+  CHECK(0);
+
+  static int eventID = 0;
+
+  RCTProfileLock(
+    RCTProfileOngoingEvents[@(eventID)] = @[
+      RCTProfileTimestamp(CACurrentMediaTime()),
+      name,
+      RCTNullIfNil(args),
+    ];
+  );
+
+  return eventID++;
+}
+
+void RCTProfileEndAsyncEvent(
+  __unused uint64_t tag,
+  NSString *category,
+  int cookie,
+  __unused NSString *name,
+  NSDictionary *args
+) {
+  CHECK();
+  RCTProfileLock(
+    NSArray *event = RCTProfileOngoingEvents[@(cookie)];
+    if (event) {
       NSNumber *endTimestamp = RCTProfileTimestamp(CACurrentMediaTime());
 
       RCTProfileAddEvent(RCTProfileTraceEvents,
-        @"name": name,
-        @"cat": categories,
+        @"name": event[1],
+        @"cat": category,
         @"ph": @"X",
-        @"ts": startTimestamp,
-        @"dur": @(endTimestamp.doubleValue - startTimestamp.doubleValue),
-        @"args": args ?: @[],
+        @"ts": event[0],
+        @"dur": @(endTimestamp.doubleValue - [event[0] doubleValue]),
+        @"args": RCTProfileMergeArgs(event[2], args),
       );
-      [RCTProfileOngoingEvents removeObjectForKey:eventID];
+      [RCTProfileOngoingEvents removeObjectForKey:@(cookie)];
     }
   );
 }
 
-void RCTProfileImmediateEvent(NSString *name, NSTimeInterval timestamp, NSString *scope)
-{
+void RCTProfileImmediateEvent(
+  __unused uint64_t tag,
+  NSString *name,
+  char scope
+) {
   CHECK();
+
   RCTProfileLock(
     RCTProfileAddEvent(RCTProfileTraceEvents,
       @"name": name,
-      @"ts": RCTProfileTimestamp(timestamp),
-      @"scope": scope,
+      @"ts": RCTProfileTimestamp(CACurrentMediaTime()),
+      @"scope": @(scope),
       @"ph": @"i",
       @"args": RCTProfileGetMemoryUsage(),
     );
diff --git a/React/Executors/RCTContextExecutor.m b/React/Executors/RCTContextExecutor.m
index 9eb147dbf..95f22fe92 100644
--- a/React/Executors/RCTContextExecutor.m
+++ b/React/Executors/RCTContextExecutor.m
@@ -136,18 +136,10 @@ static JSValueRef RCTNoop(JSContextRef context, __unused JSObjectRef object, __u
 
 #if RCT_DEV
 
-static NSMutableArray *profiles;
-
 static JSValueRef RCTConsoleProfile(JSContextRef context, __unused JSObjectRef object, __unused JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], __unused JSValueRef *exception)
 {
-  static dispatch_once_t onceToken;
-  dispatch_once(&onceToken, ^{
-    profiles = [NSMutableArray new];
-  });
-
   static int profileCounter = 1;
   NSString *profileName;
-  NSNumber *profileID = _RCTProfileBeginEvent();
 
   if (argumentCount > 0) {
     profileName = RCTJSValueToNSString(context, arguments[0]);
@@ -160,25 +152,14 @@ static JSValueRef RCTConsoleProfile(JSContextRef context, __unused JSObjectRef o
     profileInfo = @[RCTJSValueToNSString(context, arguments[1])];
   }
 
-  [profiles addObjectsFromArray:@[profileName, profileID, profileInfo]];
+  RCTProfileBeginEvent(0, profileName, profileInfo);
 
   return JSValueMakeUndefined(context);
 }
 
 static JSValueRef RCTConsoleProfileEnd(JSContextRef context, __unused JSObjectRef object, __unused JSObjectRef thisObject, __unused size_t argumentCount, __unused const JSValueRef arguments[], __unused JSValueRef *exception)
 {
-  NSString *profileInfo = [profiles lastObject];
-  [profiles removeLastObject];
-  NSNumber *profileID = [profiles lastObject];
-  [profiles removeLastObject];
-  NSString *profileName = [profiles lastObject];
-  [profiles removeLastObject];
-
-  if (argumentCount > 0 && !JSValueIsUndefined(context, arguments[0])) {
-    profileName = RCTJSValueToNSString(context, arguments[0]);
-  }
-
-  _RCTProfileEndEvent(profileID, profileName, @"console", profileInfo);
+  RCTProfileEndEvent(0, @"console", nil);
 
   return JSValueMakeUndefined(context);
 }
@@ -461,7 +442,7 @@ static NSError *RCTNSErrorFromJSError(JSContextRef context, JSValueRef jsError)
     }
 
     onComplete(objcValue, nil);
-  }), @"js_call", (@{@"module":name, @"method": method, @"args": arguments}))];
+  }), 0, @"js_call", (@{@"module":name, @"method": method, @"args": arguments}))];
 }
 
 - (void)executeApplicationScript:(NSString *)script
@@ -493,7 +474,7 @@ static NSError *RCTNSErrorFromJSError(JSContextRef context, JSValueRef jsError)
       }
       onComplete(error);
     }
-  }), @"js_call", (@{ @"url": sourceURL.absoluteString }))];
+  }), 0, @"js_call", (@{ @"url": sourceURL.absoluteString }))];
 }
 
 - (void)executeBlockOnJavaScriptQueue:(dispatch_block_t)block
@@ -555,7 +536,7 @@ static NSError *RCTNSErrorFromJSError(JSContextRef context, JSValueRef jsError)
     if (onComplete) {
       onComplete(nil);
     }
-  }), @"js_call,json_call", (@{@"objectName": objectName}))];
+  }), 0, @"js_call,json_call", (@{@"objectName": objectName}))];
 }
 
 RCT_EXPORT_METHOD(setContextName:(nonnull NSString *)name)
diff --git a/React/Modules/RCTUIManager.m b/React/Modules/RCTUIManager.m
index 7f72a8074..811d661d6 100644
--- a/React/Modules/RCTUIManager.m
+++ b/React/Modules/RCTUIManager.m
@@ -825,7 +825,7 @@ RCT_EXPORT_METHOD(findSubviewIn:(nonnull NSNumber *)reactTag atPoint:(CGPoint)po
 
 - (void)batchDidComplete
 {
-  RCTProfileBeginEvent();
+  RCTProfileBeginEvent(0, @"[RCTUIManager batchDidComplete]", nil);
 
   // Gather blocks to be executed now that all view hierarchy manipulations have
   // been completed (note that these may still take place before layout has finished)
@@ -857,7 +857,7 @@ RCT_EXPORT_METHOD(findSubviewIn:(nonnull NSNumber *)reactTag atPoint:(CGPoint)po
     _nextLayoutAnimation = nil;
   }
 
-  RCTProfileEndEvent(@"[RCTUIManager batchDidComplete]", @"uimanager", @{
+  RCTProfileEndEvent(0, @"uimanager", @{
     @"view_count": @([_viewRegistry count]),
   });
   [self flushUIBlocks];
@@ -877,7 +877,7 @@ RCT_EXPORT_METHOD(findSubviewIn:(nonnull NSNumber *)reactTag atPoint:(CGPoint)po
   RCTProfileBeginFlowEvent();
   dispatch_async(dispatch_get_main_queue(), ^{
     RCTProfileEndFlowEvent();
-    RCTProfileBeginEvent();
+    RCTProfileBeginEvent(0, @"UIManager flushUIBlocks", nil);
     @try {
       for (dispatch_block_t block in previousPendingUIBlocks) {
         block();
@@ -886,7 +886,7 @@ RCT_EXPORT_METHOD(findSubviewIn:(nonnull NSNumber *)reactTag atPoint:(CGPoint)po
     @catch (NSException *exception) {
       RCTLogError(@"Exception thrown while executing UI block: %@", exception);
     }
-    RCTProfileEndEvent(@"UIManager flushUIBlocks", @"objc_call", @{
+    RCTProfileEndEvent(0, @"objc_call", @{
       @"count": @(previousPendingUIBlocks.count),
     });
   });