@samitouri / QOS-React / commits / 6a4b46cd70

[Fiber] Log Effect and Render Times in Offscreen Commit Phase (#31788)

In https://github.com/facebook/react/pull/30967 and https://github.com/facebook/react/pull/30983 I added logging of the just rendered components and the effects. However this didn't consider the special Offscreen passes. So this adds the same thing to those passes. Log component effect timings for disconnected/reconnected offscreen subtrees. This includes initial mount of a Suspense boundary. Log component render timings for reconnected and already offscreen offscreen subtrees.

Sebastian Markbåge committed Dec 17, 2024 at 19:46 UTC 6a4b46cd70d2672bc4be59dcb5b8dede22ed0cef

2 files changed +183 -16

packages/react-reconciler/src/ReactFiberCommitWork.js

+182 -15

@@ -2209,6 +2209,8 @@ function recursivelyTraverseLayoutEffects(

2209 }

2210

2211 export function disappearLayoutEffects(finishedWork: Fiber) {

2212 + const prevEffectStart = pushComponentEffectStart();

2213 +

2214 switch (finishedWork.tag) {

2215 case FunctionComponent:

2216 case ForwardRef:

@@ -2266,6 +2268,25 @@ export function disappearLayoutEffects(finishedWork: Fiber) {

2268 break;

2269 }

2270 }

2271 +

2272 + if (

2273 + enableProfilerTimer &&

2274 + enableProfilerCommitHooks &&

2275 + enableComponentPerformanceTrack &&

2276 + (finishedWork.mode & ProfileMode) !== NoMode &&

2277 + componentEffectStartTime >= 0 &&

2278 + componentEffectEndTime >= 0 &&

2279 + componentEffectDuration > 0.05

2280 + ) {

2281 + logComponentEffect(

2282 + finishedWork,

2283 + componentEffectStartTime,

2284 + componentEffectEndTime,

2285 + componentEffectDuration,

2286 + );

2287 + }

2288 +

2289 + popComponentEffectStart(prevEffectStart);

2290 }

2291

2292 function recursivelyTraverseDisappearLayoutEffects(parentFiber: Fiber) {

@@ -2286,6 +2307,8 @@ export function reappearLayoutEffects(

2307 // node was reused.

2308 includeWorkInProgressEffects: boolean,

2309 ) {

2310 + const prevEffectStart = pushComponentEffectStart();

2311 +

2312 // Turn on layout effects in a tree that previously disappeared.

2313 const flags = finishedWork.flags;

2314 switch (finishedWork.tag) {

@@ -2421,6 +2444,25 @@ export function reappearLayoutEffects(

2444 break;

2445 }

2446 }

2447 +

2448 + if (

2449 + enableProfilerTimer &&

2450 + enableProfilerCommitHooks &&

2451 + enableComponentPerformanceTrack &&

2452 + (finishedWork.mode & ProfileMode) !== NoMode &&

2453 + componentEffectStartTime >= 0 &&

2454 + componentEffectEndTime >= 0 &&

2455 + componentEffectDuration > 0.05

2456 + ) {

2457 + logComponentEffect(

2458 + finishedWork,

2459 + componentEffectStartTime,

2460 + componentEffectEndTime,

2461 + componentEffectDuration,

2462 + );

2463 + }

2464 +

2465 + popComponentEffectStart(prevEffectStart);

2466 }

2467

2468 function recursivelyTraverseReappearLayoutEffects(

@@ -2846,6 +2888,7 @@ function commitPassiveMountOnFiber(

2888 finishedWork,

2889 committedLanes,

2890 committedTransitions,

2891 + endTime,

2892 );

2893 } else {

2894 // Legacy Mode: Fire the effects even if the tree is hidden.

@@ -2884,6 +2927,7 @@ function commitPassiveMountOnFiber(

2927 committedLanes,

2928 committedTransitions,

2929 includeWorkInProgressEffects,

2930 + endTime,

2931 );

2932 }

2933 }

@@ -2963,6 +3007,7 @@ function recursivelyTraverseReconnectPassiveEffects(

3007 committedLanes: Lanes,

3008 committedTransitions: Array<Transition> | null,

3009 includeWorkInProgressEffects: boolean,

3010 + endTime: number,

3011 ) {

3012 // This function visits both newly finished work and nodes that were re-used

3013 // from a previously committed tree. We cannot check non-static flags if the

@@ -2974,14 +3019,30 @@ function recursivelyTraverseReconnectPassiveEffects(

3019 // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic)

3020 let child = parentFiber.child;

3021 while (child !== null) {

2977 - reconnectPassiveEffects(

2978 - finishedRoot,

2979 - child,

2980 - committedLanes,

2981 - committedTransitions,

2982 - childShouldIncludeWorkInProgressEffects,

2983 - );

2984 - child = child.sibling;

3022 + if (enableProfilerTimer && enableComponentPerformanceTrack) {

3023 + const nextSibling = child.sibling;

3024 + reconnectPassiveEffects(

3025 + finishedRoot,

3026 + child,

3027 + committedLanes,

3028 + committedTransitions,

3029 + childShouldIncludeWorkInProgressEffects,

3030 + nextSibling !== null

3031 + ? ((nextSibling.actualStartTime: any): number)

3032 + : endTime,

3033 + );

3034 + child = nextSibling;

3035 + } else {

3036 + reconnectPassiveEffects(

3037 + finishedRoot,

3038 + child,

3039 + committedLanes,

3040 + committedTransitions,

3041 + childShouldIncludeWorkInProgressEffects,

3042 + endTime,

3043 + );

3044 + child = child.sibling;

3045 + }

3046 }

3047 }

3048

@@ -2994,7 +3055,28 @@ export function reconnectPassiveEffects(

3055 // from a previously committed tree. We cannot check non-static flags if the

3056 // node was reused.

3057 includeWorkInProgressEffects: boolean,

3058 + endTime: number, // Profiling-only. The start time of the next Fiber or root completion.

3059 ) {

3060 + const prevEffectStart = pushComponentEffectStart();

3061 +

3062 + // If this component rendered in Profiling mode (DEV or in Profiler component) then log its

3063 + // render time. We do this after the fact in the passive effect to avoid the overhead of this

3064 + // getting in the way of the render characteristics and avoid the overhead of unwinding

3065 + // uncommitted renders.

3066 + if (

3067 + enableProfilerTimer &&

3068 + enableComponentPerformanceTrack &&

3069 + (finishedWork.mode & ProfileMode) !== NoMode &&

3070 + ((finishedWork.actualStartTime: any): number) > 0 &&

3071 + (finishedWork.flags & PerformedWork) !== NoFlags

3072 + ) {

3073 + logComponentRender(

3074 + finishedWork,

3075 + ((finishedWork.actualStartTime: any): number),

3076 + endTime,

3077 + );

3078 + }

3079 +

3080 const flags = finishedWork.flags;

3081 switch (finishedWork.tag) {

3082 case FunctionComponent:

@@ -3006,6 +3088,7 @@ export function reconnectPassiveEffects(

3088 committedLanes,

3089 committedTransitions,

3090 includeWorkInProgressEffects,

3091 + endTime,

3092 );

3093 // TODO: Check for PassiveStatic flag

3094 commitHookPassiveMountEffects(finishedWork, HookPassive);

@@ -3025,6 +3108,7 @@ export function reconnectPassiveEffects(

3108 committedLanes,

3109 committedTransitions,

3110 includeWorkInProgressEffects,

3111 + endTime,

3112 );

3113

3114 if (includeWorkInProgressEffects && flags & Passive) {

@@ -3051,6 +3135,7 @@ export function reconnectPassiveEffects(

3135 committedLanes,

3136 committedTransitions,

3137 includeWorkInProgressEffects,

3138 + endTime,

3139 );

3140 } else {

3141 if (disableLegacyMode || finishedWork.mode & ConcurrentMode) {

@@ -3064,6 +3149,7 @@ export function reconnectPassiveEffects(

3149 finishedWork,

3150 committedLanes,

3151 committedTransitions,

3152 + endTime,

3153 );

3154 } else {

3155 // Legacy Mode: Fire the effects even if the tree is hidden.

@@ -3074,6 +3160,7 @@ export function reconnectPassiveEffects(

3160 committedLanes,

3161 committedTransitions,

3162 includeWorkInProgressEffects,

3163 + endTime,

3164 );

3165 }

3166 }

@@ -3093,6 +3180,7 @@ export function reconnectPassiveEffects(

3180 committedLanes,

3181 committedTransitions,

3182 includeWorkInProgressEffects,

3183 + endTime,

3184 );

3185 }

3186

@@ -3110,6 +3198,7 @@ export function reconnectPassiveEffects(

3198 committedLanes,

3199 committedTransitions,

3200 includeWorkInProgressEffects,

3201 + endTime,

3202 );

3203 if (includeWorkInProgressEffects && flags & Passive) {

3204 // TODO: Pass `current` as argument to this function

@@ -3126,6 +3215,7 @@ export function reconnectPassiveEffects(

3215 committedLanes,

3216 committedTransitions,

3217 includeWorkInProgressEffects,

3218 + endTime,

3219 );

3220 if (includeWorkInProgressEffects && flags & Passive) {

3221 commitTracingMarkerPassiveMountEffect(finishedWork);

@@ -3141,10 +3231,30 @@ export function reconnectPassiveEffects(

3231 committedLanes,

3232 committedTransitions,

3233 includeWorkInProgressEffects,

3234 + endTime,

3235 );

3236 break;

3237 }

3238 }

3239 +

3240 + if (

3241 + enableProfilerTimer &&

3242 + enableProfilerCommitHooks &&

3243 + enableComponentPerformanceTrack &&

3244 + (finishedWork.mode & ProfileMode) !== NoMode &&

3245 + componentEffectStartTime >= 0 &&

3246 + componentEffectEndTime >= 0 &&

3247 + componentEffectDuration > 0.05

3248 + ) {

3249 + logComponentEffect(

3250 + finishedWork,

3251 + componentEffectStartTime,

3252 + componentEffectEndTime,

3253 + componentEffectDuration,

3254 + );

3255 + }

3256 +

3257 + popComponentEffectStart(prevEffectStart);

3258 }

3259

3260 function recursivelyTraverseAtomicPassiveEffects(

@@ -3152,6 +3262,7 @@ function recursivelyTraverseAtomicPassiveEffects(

3262 parentFiber: Fiber,

3263 committedLanes: Lanes,

3264 committedTransitions: Array<Transition> | null,

3265 + endTime: number, // Profiling-only. The start time of the next Fiber or root completion.

3266 ) {

3267 // "Atomic" effects are ones that need to fire on every commit, even during

3268 // pre-rendering. We call this function when traversing a hidden tree whose

@@ -3160,13 +3271,28 @@ function recursivelyTraverseAtomicPassiveEffects(

3271 if (parentFiber.subtreeFlags & PassiveMask) {

3272 let child = parentFiber.child;

3273 while (child !== null) {

3163 - commitAtomicPassiveEffects(

3164 - finishedRoot,

3165 - child,

3166 - committedLanes,

3167 - committedTransitions,

3168 - );

3169 - child = child.sibling;

3274 + if (enableProfilerTimer && enableComponentPerformanceTrack) {

3275 + const nextSibling = child.sibling;

3276 + commitAtomicPassiveEffects(

3277 + finishedRoot,

3278 + child,

3279 + committedLanes,

3280 + committedTransitions,

3281 + nextSibling !== null

3282 + ? ((nextSibling.actualStartTime: any): number)

3283 + : endTime,

3284 + );

3285 + child = nextSibling;

3286 + } else {

3287 + commitAtomicPassiveEffects(

3288 + finishedRoot,

3289 + child,

3290 + committedLanes,

3291 + committedTransitions,

3292 + endTime,

3293 + );

3294 + child = child.sibling;

3295 + }

3296 }

3297 }

3298 }

@@ -3176,7 +3302,24 @@ function commitAtomicPassiveEffects(

3302 finishedWork: Fiber,

3303 committedLanes: Lanes,

3304 committedTransitions: Array<Transition> | null,

3305 + endTime: number, // Profiling-only. The start time of the next Fiber or root completion.

3306 ) {

3307 + // If this component rendered in Profiling mode (DEV or in Profiler component) then log its

3308 + // render time. A render can happen even if the subtree is offscreen.

3309 + if (

3310 + enableProfilerTimer &&

3311 + enableComponentPerformanceTrack &&

3312 + (finishedWork.mode & ProfileMode) !== NoMode &&

3313 + ((finishedWork.actualStartTime: any): number) > 0 &&

3314 + (finishedWork.flags & PerformedWork) !== NoFlags

3315 + ) {

3316 + logComponentRender(

3317 + finishedWork,

3318 + ((finishedWork.actualStartTime: any): number),

3319 + endTime,

3320 + );

3321 + }

3322 +

3323 // "Atomic" effects are ones that need to fire on every commit, even during

3324 // pre-rendering. We call this function when traversing a hidden tree whose

3325 // regular effects are currently disconnected.

@@ -3188,6 +3331,7 @@ function commitAtomicPassiveEffects(

3331 finishedWork,

3332 committedLanes,

3333 committedTransitions,

3334 + endTime,

3335 );

3336 if (flags & Passive) {

3337 // TODO: Pass `current` as argument to this function

@@ -3203,6 +3347,7 @@ function commitAtomicPassiveEffects(

3347 finishedWork,

3348 committedLanes,

3349 committedTransitions,

3350 + endTime,

3351 );

3352 if (flags & Passive) {

3353 // TODO: Pass `current` as argument to this function

@@ -3217,6 +3362,7 @@ function commitAtomicPassiveEffects(

3362 finishedWork,

3363 committedLanes,

3364 committedTransitions,

3365 + endTime,

3366 );

3367 break;

3368 }

@@ -3591,6 +3737,8 @@ function commitPassiveUnmountInsideDeletedTreeOnFiber(

3737 current: Fiber,

3738 nearestMountedAncestor: Fiber | null,

3739 ): void {

3740 + const prevEffectStart = pushComponentEffectStart();

3741 +

3742 switch (current.tag) {

3743 case FunctionComponent:

3744 case ForwardRef:

@@ -3702,6 +3850,25 @@ function commitPassiveUnmountInsideDeletedTreeOnFiber(

3850 break;

3851 }

3852 }

3853 +

3854 + if (

3855 + enableProfilerTimer &&

3856 + enableProfilerCommitHooks &&

3857 + enableComponentPerformanceTrack &&

3858 + (current.mode & ProfileMode) !== NoMode &&

3859 + componentEffectStartTime >= 0 &&

3860 + componentEffectEndTime >= 0 &&

3861 + componentEffectDuration > 0.05

3862 + ) {

3863 + logComponentEffect(

3864 + current,

3865 + componentEffectStartTime,

3866 + componentEffectEndTime,

3867 + componentEffectDuration,

3868 + );

3869 + }

3870 +

3871 + popComponentEffectStart(prevEffectStart);

3872 }

3873

3874 export function invokeLayoutEffectMountInDEV(fiber: Fiber): void {

packages/react-reconciler/src/ReactFiberWorkLoop.js

+1 -1

@@ -4139,7 +4139,7 @@ function doubleInvokeEffectsOnFiber(

4139 }

4140 reappearLayoutEffects(root, fiber.alternate, fiber, false);

4141 if (shouldDoubleInvokePassiveEffects) {

4142 - reconnectPassiveEffects(root, fiber, NoLanes, null, false);

4142 + reconnectPassiveEffects(root, fiber, NoLanes, null, false, 0);

4143 }

4144 } finally {

4145 setIsStrictModeForDevtools(false);