# Heap snapshots: разница и retainers (heapdiff.py)

A = `results/20261026-s1/artifacts/memory-cycle10.heapsnapshot`, B = `results/20261026-s1/artifacts/memory-cycle20.heapsnapshot`, база = `results/20261026-s1/artifacts/memory-cycle00.heapsnapshot`

Self size всех узлов: a_self_bytes 23066796, b_self_bytes 27208391, a_nodes 364458, b_nodes 463302, base_self_bytes 12931501, base_nodes 210912

Новых выживших объектов в B (id нет в A): 173067, 6271836 байт self size.

## Классы с наибольшим ростом self size (B - A)

| класс | Δ число | Δ байт | число A | число B | байт A | байт B |
|---|---|---|---|---|---|---|
| (native) blink::MediaQueryFeatureExpNode | 23161 | 1852880 | 23215 | 46376 | 1857200 | 3710080 |
| (native) blink::MediaQuery | 23161 | 741152 | 23237 | 46398 | 743584 | 1484736 |
| (native) blink::MediaQuerySet | 23161 | 555864 | 23238 | 46399 | 557712 | 1113576 |
| (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const | 23161 | 555864 | 23295 | 46456 | 559000 | 1114864 |
| (code) | 806 | 238664 | 69314 | 70120 | 6750428 | 6989092 |
| (native) DOMRectReadOnly | 456 | 25536 | 800 | 1256 | 44800 | 70336 |
| Object | 1121 | 24616 | 19311 | 20432 | 502232 | 526848 |
| (native) blink::NetworkResourcesData::ResourceData | 70 | 20160 | 89 | 159 | 25632 | 45792 |
| (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const | 0 | 16448 | 20 | 20 | 19664 | 36112 |
| (native) system | 405 | 14107 | 21520 | 21925 | 4430548 | 4444655 |
| (number) | 1048 | 12588 | 18925 | 19973 | 15816 | 28404 |
| (native) blink::XHRReplayData | 70 | 12320 | 73 | 143 | 12848 | 25168 |
| (native) PerformanceResourceTiming | 70 | 9520 | 88 | 158 | 11968 | 21488 |
| (native) LayoutShiftAttribution | 228 | 9120 | 400 | 628 | 16000 | 25120 |
| (string) | 1372 | 9112 | 47563 | 48935 | 1521288 | 1530400 |
| (native) blink::HashTrieNode<blink::CSSVariableData> | 31 | 8432 | 155 | 186 | 42160 | 50592 |
| (native) LayoutShift | 54 | 8208 | 96 | 150 | 14592 | 22800 |
| (native) LargestContentfulPaint | 40 | 5440 | 44 | 84 | 5984 | 11424 |
| (array) (object elements) | 180 | 4440 | 3494 | 3674 | 154064 | 158504 |
| (native) InteractionContentfulPaint | 40 | 4160 | 40 | 80 | 4160 | 8320 |

## Новые выжившие объекты B по классам

| класс | число | байт |
|---|---|---|
| (native) blink::MediaQueryFeatureExpNode | 23153 | 1852240 |
| (native) blink::MediaQuery | 23159 | 741088 |
| (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const | 23192 | 556512 |
| (native) blink::MediaQuerySet | 23155 | 555720 |
| (code) | 3077 | 530660 |
| Object | 10841 | 295704 |
| (string) | 24332 | 195224 |
| oW | 1272 | 127200 |
| (closure) (anonymous) | 3892 | 110868 |
| (object shape) system | 1335 | 76068 |
| (native) blink::HeapHashTableBacking<blink::HashTable<blink::ShapeCacheKey, | 3 | 74904 |
| (native) system | 1822 | 74008 |
| system | 2282 | 72660 |
| (array) (object properties) | 44 | 40672 |
| (native) blink::ComputedStyleBase::StyleSurroundData | 124 | 38688 |
| (array) (object elements) | 1586 | 34484 |
| (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const | 6 | 33312 |
| Array | 1927 | 30832 |
| (native) blink::ComputedStyleBase::StyleMiscInherited1Data | 128 | 26624 |
| (native) DOMRectReadOnly | 456 | 25536 |

## Пути удержания новых объектов (кратчайший путь от корня, 6 ближайших шагов; объектов / байт)

- **(native) blink::MediaQueryFeatureExpNode**
  - 1 / 80 B: `(native) blink::ConditionalExpNodeNested.[1] <- (native) blink::MediaQuery.[1] <- (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) MediaQueryList.[4] <- (native) blink::HeapVectorBacking<std::pair<cppgc::internal::BasicMember<const.[3]`
  - 1 / 80 B: `(native) blink::MediaQuery.[1] <- (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[23756] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24]`
  - 1 / 80 B: `(native) blink::MediaQuery.[1] <- (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[28422] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24]`
  - 1 / 80 B: `(native) blink::MediaQuery.[1] <- (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[17109] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24]`
  - 1 / 80 B: `(native) blink::MediaQuery.[1] <- (native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[43171] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24]`
- **(native) blink::MediaQuery**
  - 1 / 32 B: `(native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[23756] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document`
  - 1 / 32 B: `(native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[28422] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document`
  - 1 / 32 B: `(native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[17109] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document`
  - 1 / 32 B: `(native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[43171] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document`
  - 1 / 32 B: `(native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const.[1] <- (native) blink::MediaQuerySet.[1] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[14406] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document`
- **(native) blink::HeapVectorBacking<cppgc::internal::BasicMember<const**
  - 3 / 72 B: `(native) blink::CSSAnimationData.[3] <- (native) blink::ComputedStyleBase::StyleMisc7Data.[1] <- (native) blink::ComputedStyleBase::StyleMiscData.[10] <- (native) blink::ComputedStyle.[2] <- (native) <div.[6] <- (native) <input.[19]`
  - 3 / 72 B: `(native) blink::CSSAnimationData.[5] <- (native) blink::ComputedStyleBase::StyleMisc7Data.[1] <- (native) blink::ComputedStyleBase::StyleMiscData.[10] <- (native) blink::ComputedStyle.[2] <- (native) <div.[6] <- (native) <input.[19]`
  - 2 / 48 B: `(native) blink::MeasureCache.[1] <- (native) blink::LayoutTableCell.[3] <- (native) blink::LayoutFlexibleBox.[7] <- (native) blink::LayoutFlexibleBox.[8] <- (native) blink::PaintLayer.[1] <- (native) blink::PaintLayerScrollableArea.[5]`
  - 2 / 48 B: `(native) blink::CSSAnimationData.[3] <- (native) blink::ComputedStyleBase::StyleMisc7Data.[1] <- (native) blink::ComputedStyleBase::StyleMiscData.[10] <- (native) blink::ComputedStyle.[2] <- (native) blink::LayoutText.[2] <- (native) Text.[4]`
  - 2 / 48 B: `(native) blink::CSSAnimationData.[5] <- (native) blink::ComputedStyleBase::StyleMisc7Data.[1] <- (native) blink::ComputedStyleBase::StyleMiscData.[10] <- (native) blink::ComputedStyle.[2] <- (native) blink::LayoutText.[2] <- (native) Text.[4]`
- **(native) blink::MediaQuerySet**
  - 1 / 24 B: `(native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[31856] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document <- (synthetic).2262 / DevTools console <- (synthetic).[10]`
  - 1 / 24 B: `(native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[27581] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document <- (synthetic).2262 / DevTools console <- (synthetic).[10]`
  - 1 / 24 B: `(native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[7177] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document <- (synthetic).2262 / DevTools console <- (synthetic).[10]`
  - 1 / 24 B: `(native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[12211] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document <- (synthetic).2262 / DevTools console <- (synthetic).[10]`
  - 1 / 24 B: `(native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[22806] <- (native) StyleEngine.[12] <- (native) HTMLDocument.[24] <- InjectedScript.document <- (synthetic).2262 / DevTools console <- (synthetic).[10]`
- **(code)**
  - 2 / 39136 B: `(code).instruction_stream <- (closure) (anonymous).code <- Object.render <- oW.elementType <- oW.return <- oW.return`
  - 1 / 34272 B: `(code).instruction_stream <- (closure) (anonymous).code <- Object.type <- system.nY <- (closure) (anonymous).context <- oW.elementType`
  - 3 / 12392 B: `(code).[0] <- (code).deoptimization_data <- (closure) (anonymous).code <- Object.render <- oW.elementType <- oW.return`
  - 1 / 11232 B: `(code).instruction_stream <- (closure) (anonymous).code <- system.e <- (closure) (anonymous).context <- Object.render <- oW.elementType`
  - 1 / 9396 B: `(code).[0] <- (code).deoptimization_data <- (closure) (anonymous).code <- Object.type <- system.nY <- (closure) (anonymous).context`
- **Object**
  - 1857 / 58272 B: `Object.next <- Object.next <- Object.next <- Object.next <- Object.next <- Object.next`
  - 206 / 3296 B: `Object.memoizedState <- Object.next <- Object.next <- Object.next <- Object.next <- Object.next`
  - 76 / 2432 B: `Object.next <- Object.next <- Object.next <- Object.next <- Object.next <- oW.memoizedState`
  - 32 / 1024 B: `Object.lastEffect <- oW.updateQueue <- oW.alternate <- oW.child <- oW.return <- (native) <div.__reactFiber$wimqul213a`
  - 31 / 992 B: `Object.next <- Object.next <- Object.next <- Object.next <- Object.lastEffect <- oW.updateQueue`
- **(string)**
  - 116 / 74876 B: `(string).first <- Object.styles <- Object.serialized <- oW.pendingProps <- oW.child <- oW.return`
  - 81 / 36680 B: `(string).first <- Object.styles <- Object.serialized <- oW.pendingProps <- oW.alternate <- oW.child`
  - 29 / 4624 B: `(string).first <- Object.styles <- Object.serialized <- oW.pendingProps <- oW.child <- oW.child`
  - 27 / 2028 B: `(string).first <- Object.className <- oW.pendingProps <- oW.alternate <- oW.return <- (native) <div.__reactFiber$wimqul213a`
  - 18 / 1568 B: `(string).first <- Object.className <- oW.pendingProps <- oW.return <- oW.return <- oW.return`
- **oW**
  - 5 / 500 B: `oW.return <- oW.return <- (native) <td.__reactFiber$wimqul213a <- (native) blink::LayoutTableCell.[8] <- (native) blink::PaintLayer.[1] <- (native) blink::PaintLayerScrollableArea.[5]`
  - 5 / 500 B: `oW.child <- oW.return <- (native) <td.__reactFiber$wimqul213a <- (native) blink::LayoutTableCell.[8] <- (native) blink::PaintLayer.[1] <- (native) blink::PaintLayerScrollableArea.[5]`
  - 5 / 500 B: `oW.child <- oW.return <- oW.return <- oW.return <- (native) <button.__reactFiber$wimqul213a <- (native) SVGSVGElement.[17]`
  - 5 / 500 B: `oW.alternate <- oW.return <- (native) <div.__reactFiber$wimqul213a <- (native) blink::LayoutFlexibleBox.[7] <- (native) blink::PaintLayer.[1] <- (native) blink::PaintLayerScrollableArea.[5]`
  - 5 / 500 B: `oW.alternate <- oW.return <- (native) <div.__reactFiber$wimqul213a <- (native) <div.[11] <- (native) blink::LayoutFlexibleBox.[7] <- (native) blink::PaintLayer.[1]`
- **(closure) (anonymous)**
  - 202 / 5656 B: `Object.create <- Object.next <- Object.next <- Object.next <- Object.next <- Object.next`
  - 81 / 2308 B: `Array.[0] <- Object.memoizedState <- Object.next <- Object.next <- Object.next <- Object.next`
  - 59 / 1888 B: `Object.create <- Object.lastEffect <- oW.updateQueue <- oW.alternate <- oW.child <- oW.return`
  - 48 / 1536 B: `Object.create <- Object.lastEffect <- oW.updateQueue <- oW.child <- oW.return <- (native) <div.__reactFiber$wimqul213a`
  - 38 / 1064 B: `system.e <- (closure) (anonymous).context <- Object.create <- Object.next <- Object.next <- Object.next`
- **(object shape) system**
  - 153 / 6120 B: `(object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer`
  - 52 / 3232 B: `(object shape) system.transitions <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer`
  - 1 / 2436 B: `(object shape) system.transitions <- (closure) Object.initial_map <- (native) system.object_function <- (synthetic).2236 / V8PerContextData::context_ <- (synthetic).[10] <- (synthetic).[1]`
  - 48 / 1920 B: `(object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- Object.map`
  - 1 / 1732 B: `(object shape) system.transitions <- (object shape) system.back_pointer <- Object.map <- Object.data <- (synthetic).102 / DevTools console <- (synthetic).[10]`
- **(native) blink::HeapHashTableBacking<blink::HashTable<blink::ShapeCacheKey,**
  - 1 / 36872 B: `(native) blink::NGShapeCache.[1] <- (native) blink::SimpleFontData.[2] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[7] <- (native) blink::FontGlobalContext.[4] <- (synthetic).T *blink::ThreadSpecific<cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy>>::operator cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy> *() [T = cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy>]@../../third_party/blink/renderer/platform/wtf/thread_specific.h:137 <- (synthetic).[29]`
  - 1 / 36872 B: `(native) blink::NGShapeCache.[1] <- (native) blink::SimpleFontData.[2] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[8] <- (native) blink::FontGlobalContext.[4] <- (synthetic).T *blink::ThreadSpecific<cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy>>::operator cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy> *() [T = cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy>]@../../third_party/blink/renderer/platform/wtf/thread_specific.h:137 <- (synthetic).[29]`
  - 1 / 1160 B: `(native) blink::NGShapeCache.[1] <- (native) blink::SimpleFontData.[2] <- (native) blink::HeapHashTableBacking<blink::HashTable<cppgc::internal::BasicMember<const.[2] <- (native) blink::FontGlobalContext.[4] <- (synthetic).T *blink::ThreadSpecific<cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy>>::operator cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy> *() [T = cppgc::internal::BasicPersistent<blink::FontGlobalContext, cppgc::internal::StrongPersistentPolicy>]@../../third_party/blink/renderer/platform/wtf/thread_specific.h:137 <- (synthetic).[29]`
- **(native) system**
  - 1 / 2916 B: `(object shape) system.dependent_code <- Object.map <- system.E <- (closure) (anonymous).context <- system.to <- system.previous`
  - 1 / 2916 B: `(object shape) system.dependent_code <- Object.map <- oW.dependencies <- oW.return <- (native) <div.__reactFiber$wimqul213a <- (native) HTMLDocument.[11]`
  - 62 / 2376 B: `(object shape) system.dependent_code <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer <- (object shape) system.back_pointer`
  - 3 / 1356 B: `Object.properties <- system.e <- (closure) debug.context <- Object.debug <- system.r <- (closure) (anonymous).context`
  - 1 / 864 B: `(object shape) system.dependent_code <- (native) system.js_array_packed_smi_elements_map <- (synthetic).2236 / V8PerContextData::context_ <- (synthetic).[10] <- (synthetic).[1]`

## Detached-узлы в B

- (native) <textarea: 1
- (native) <div: 1
- (native) <tr>: 1
- (native) <td>: 1