christophpurrer · Oct 23, 2026
diff --git a/packages/react-native/Package.swift b/packages/react-native/Package.swift
@@ -454,7 +454,6 @@ let reactCore = RNTarget(
   path: "React",
   searchPaths: [
     "React/I18n",
-    "React/Profiler",
     "ReactCommon/react/runtime/platform/ios", // explicit header search path to break circular dependency. RCTHost imports `RCTDefines.h` in ReactCore, ReacCore needs to import RCTHost
   ],
   linkedFrameworks: ["CoreServices"],

diff --git a/packages/react-native/React/Base/RCTBridge.mm b/packages/react-native/React/Base/RCTBridge.mm
@@ -27,7 +27,6 @@
 #import "RCTModuleData.h"
 #import "RCTPausedInDebuggerOverlayController.h"
 #import "RCTPerformanceLogger.h"
-#import "RCTProfile.h"
 #import "RCTReloadCommand.h"
 #import "RCTUtils.h"
 

diff --git a/packages/react-native/React/Base/RCTDisplayLink.m b/packages/react-native/React/Base/RCTDisplayLink.m
@@ -12,7 +12,6 @@
 
 #import "RCTAssert.h"
 #import "RCTFrameUpdate.h"
-#import "RCTProfile.h"
 
 #define RCTAssertRunLoop() \
   RCTAssert(_runLoop == [NSRunLoop currentRunLoop], @"This method must be called on the CADisplayLink run loop")
@@ -81,8 +80,6 @@ - (void)_jsThreadUpdate:(CADisplayLink *)displayLink
 {
   RCTAssertRunLoop();
 
-  RCT_PROFILE_BEGIN_EVENT(RCTProfileTagAlways, @"-[RCTDisplayLink _jsThreadUpdate:]", nil);
-
   // This always runs on the JS thread run loop, which is the queue the frame
   // update observer expects its callbacks on, so dispatch inline.
   RCTFrameUpdate *frameUpdate = [[RCTFrameUpdate alloc] initWithDisplayLink:displayLink];
@@ -91,10 +88,6 @@ - (void)_jsThreadUpdate:(CADisplayLink *)displayLink
   }
 
   [self updateJSDisplayLinkState];
-
-  RCTProfileImmediateEvent(RCTProfileTagAlways, @"JS Thread Tick", displayLink.timestamp, 'g');
-
-  RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"objc_call");
 }
 
 - (void)updateJSDisplayLinkState

diff --git a/packages/react-native/React/Base/RCTModuleMethod.mm b/packages/react-native/React/Base/RCTModuleMethod.mm
@@ -17,7 +17,6 @@
 #import "RCTLog.h"
 #import "RCTManagedPointer.h"
 #import "RCTParserUtils.h"
-#import "RCTProfile.h"
 #import "RCTUtils.h"
 
 typedef BOOL (^RCTArgumentBlock)(RCTBridge *, NSUInteger, id);
@@ -471,12 +470,7 @@ - (void)processMethodSignature
 - (SEL)selector
 {
   if (_selector == NULL) {
-    RCT_PROFILE_BEGIN_EVENT(
-        RCTProfileTagAlways,
-        @"",
-        (@{@"module" : NSStringFromClass(_moduleClass), @"method" : @(_methodInfo->objcName)}));
     [self processMethodSignature];
-    RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
   }
 
   return _selector;

diff --git a/packages/react-native/React/Base/RCTPerformanceLogger.mm b/packages/react-native/React/Base/RCTPerformanceLogger.mm
@@ -12,14 +12,12 @@
 #import "RCTLog.h"
 #import "RCTPerformanceLogger.h"
 #import "RCTPerformanceLoggerLabels.h"
-#import "RCTProfile.h"
 #import "RCTRootView.h"
 
 using namespace facebook::react;
 
 @interface RCTPerformanceLogger () {
   int64_t _data[RCTPLSize][2];
-  NSInteger _cookies[RCTPLSize];
 }
 
 @end
@@ -46,12 +44,6 @@ @implementation RCTPerformanceLogger
 
 - (void)markStartForTag:(RCTPLTag)tag
 {
-#if RCT_PROFILE
-  if (RCTProfileIsProfiling()) {
-    NSString *label = RCTPLLabelForTag(tag);
-    _cookies[tag] = RCTProfileBeginAsyncEvent(RCTProfileTagAlways, label, nil);
-  }
-#endif
   const NSTimeInterval currentTime = CACurrentMediaTime() * 1000;
   _data[tag][0] = currentTime;
   _data[tag][1] = 0;
@@ -65,12 +57,6 @@ - (void)markStartForTag:(RCTPLTag)tag
 
 - (void)markStopForTag:(RCTPLTag)tag
 {
-#if RCT_PROFILE
-  if (RCTProfileIsProfiling()) {
-    NSString *label = RCTPLLabelForTag(tag);
-    RCTProfileEndAsyncEvent(RCTProfileTagAlways, @"native", _cookies[tag], label, @"RCTPerformanceLogger");
-  }
-#endif
   const NSTimeInterval currentTime = CACurrentMediaTime() * 1000;
   if (_data[tag][0] != 0 && _data[tag][1] == 0) {
     _data[tag][1] = currentTime;

diff --git a/packages/react-native/React/Base/RCTRootView.m b/packages/react-native/React/Base/RCTRootView.m
@@ -17,7 +17,6 @@
 #import "RCTKeyCommands.h"
 #import "RCTLog.h"
 #import "RCTPerformanceLogger.h"
-#import "RCTProfile.h"
 #import "RCTTouchHandler.h"
 #import "RCTUIManager.h"
 #import "RCTUIManagerUtils.h"

diff --git a/...ages/react-native/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.mm b/...ages/react-native/React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingProxyRootView.mm
@@ -14,7 +14,6 @@
 #import "RCTBridge.h"
 #import "RCTLog.h"
 #import "RCTPerformanceLogger.h"
-#import "RCTProfile.h"
 #import "RCTRootViewDelegate.h"
 #import "RCTSurface.h"
 #import "UIView+React.h"

diff --git a/packages/react-native/React/CoreModules/RCTEventDispatcher.mm b/packages/react-native/React/CoreModules/RCTEventDispatcher.mm
@@ -11,7 +11,6 @@
 #import <React/RCTBridge+Private.h>
 #import <React/RCTBridge.h>
 #import <React/RCTComponentEvent.h>
-#import <React/RCTProfile.h>
 #import <React/RCTUtils.h>
 #import <ReactCommon/RCTTurboModule.h>
 

diff --git a/packages/react-native/React/Modules/RCTUIManager.mm b/packages/react-native/React/Modules/RCTUIManager.mm
@@ -24,7 +24,6 @@
 #import "RCTLog.h"
 #import "RCTModuleData.h"
 #import "RCTModuleMethod.h"
-#import "RCTProfile.h"
 #import "RCTScrollableProtocol.h"
 #import "RCTShadowView.h"
 #import "RCTSurfaceRootShadowView.h"

diff --git a/packages/react-native/React/Profiler/RCTMacros.h b/packages/react-native/React/Profiler/RCTMacros.h