.svg){kind=icon}
版本
- 適用於 JDK 23 的 GraalVM (最新)
- 適用於 JDK 24 的 GraalVM (搶先體驗)
- 適用於 JDK 21 的 GraalVM
- 適用於 JDK 17 的 GraalVM
- 封存
- 開發版本
- Truffle 語言實作框架
- Truffle 分支檢測
- 動態物件模型
- 靜態物件模型
- 直譯器程式碼的主機最佳化
- Truffle 的函式內聯方法
- 分析 Truffle 直譯器
- Truffle Interop 2.0
- 語言實作
- 使用 Truffle 實作新語言
- Truffle 語言和儀器遷移至 Java 模組
- Truffle 原生函式介面
- 最佳化 Truffle 直譯器
- 選項
- 堆疊上替換
- Truffle 字串指南
- 特化直方圖
- 測試 DSL 特化
- 基於 Polyglot API 的 TCK
- Truffle 的編譯佇列方法
- Truffle 程式庫指南
- Truffle AOT 概觀
- Truffle AOT 編譯
- 輔助引擎快取
- Truffle 語言安全點教學
- 單態化
- 分割演算法
- 單態化使用案例
- 向執行階段報告多態特化
最佳化 Truffle 直譯器
本文件討論最佳化或除錯 Truffle 直譯器以達到最佳時間效能的工具。
策略 #
-
使用效能分析工具取樣應用程式並識別負責的編譯單元。使用取樣延遲 (
--cpusampler.Delay=MILLISECONDS) 僅在暖機後進行效能分析。請參閱效能分析指南。 -
了解正在編譯的內容並尋找反最佳化。列為主要在直譯器中執行的方法可能存在反最佳化問題。
-
在仍然顯示效能問題的情況下，盡可能簡化程式碼。
-
啟用效能警告並列出邊界呼叫。
- 傾印負責編譯單元的 Graal 圖形，並查看
After TruffleTier階段。- 查看
After TruffleTier和After PartialEscape階段的 Graal 圖形，並檢查是否符合您的預期。如果存在您不希望在那裡的節點，請考慮如何防止包含它們。如果存在比您想要的更複雜的節點，請考慮如何新增產生更簡單程式碼的特化。如果在基準測試中您認為應該存在但不存在的節點，請考慮如何使值動態化，以便它們不會被最佳化掉。
- 查看
-
在 Graal IR 中搜尋
Invoke節點。不代表訪客語言呼叫的Invoke節點應被特化掉。這可能並非總是可行，例如，如果方法執行 I/O。 -
搜尋控制流程分割（紅線）並調查它們是否是由訪客應用程式引起的控制流程造成，或者只是語言實作的產物。如果可能，應避免後者。
- 搜尋線性程式碼中的間接 (
Load和LoadIndexed) 並嘗試最小化程式碼。熱路徑上的程式碼越少越好。
Truffle 編譯器選項 #
您可以在選項指南中找到最新的專家和內部選項的完整清單。
觀察編譯 #
本節概述了大多數可用的命令列選項，用於觀察編譯。
注意：大多數選項也需要設定額外的 --experimental-options 旗標。
--engine.TraceCompilation 命令會在每次編譯方法時列印一行
[engine] opt done id=244 EqualityConstraint.execute |Tier 1|Time 268( 220+47 )ms|AST 17|Inlined 0Y 2N|IR 238/ 437|CodeSize 1874|Timestamp 758868036671903|Src octane-deltablue.js:528
以下是這些日誌中提供的資訊的快速概觀
id- 呼叫目標的唯一識別碼。Tier- 目標排定的編譯層級。Time- 編譯持續時間，Truffle 層級（主要是部分評估）與 Graal 層級之間有分隔。AST- 目標的非瑣碎節點計數。Inlined- 有多少呼叫被內聯，以及內聯後剩餘多少呼叫。IR- 部分評估後和編譯後的 Graal 節點計數。CodeSize- 為呼叫目標產生的程式碼大小。Timestamp- 事件發生時由System.nanoTime()報告的時間。Src- 呼叫目標的縮寫來源區段。
--engine.TraceCompilationDetails 命令會在編譯排入佇列、取消排入佇列、開始或完成時列印一行
[engine] opt queued id=237 BinaryConstraint.output |Tier 1|Count/Thres 25/ 25|Queue: Size 1 Change +1 Load 0.06 Time 0us|Timestamp 758865671350686|Src octane-deltablue.js:416
[engine] opt start id=237 BinaryConstraint.output |Tier 1|Priority 25|Rate 0.000000|Queue: Size 0 Change +0 Load 0.06 Time 0us|Timestamp 758865708273384|Src octane-deltablue.js:416
[engine] opt queued id=239 OrderedCollection.size |Tier 1|Count/Thres 25/ 25|Queue: Size 1 Change +1 Load 0.06 Time 0us|Timestamp 758865727664193|Src octane-deltablue.js:71
[engine] opt queued id=52 Array.prototype.push |Tier 1|Count/Thres 25/ 50|Queue: Size 2 Change +1 Load 0.13 Time 0us|Timestamp 758865744191674|Src <builtin>:1
... more log ...
[engine] opt start id=239 OrderedCollection.size |Tier 1|Priority 181875|Rate 0.000001|Queue: Size 11 Change -1 Load 0.63 Time 575us|Timestamp 758866381654116|Src octane-deltablue.js:71
[engine] opt done id=237 BinaryConstraint.output |Tier 1|Time 717( 654+64 )ms|AST 19|Inlined 0Y 0N|IR 143/ 220|CodeSize 882|Timestamp 758866435391354|Src octane-deltablue.js:416
[engine] opt start id=236 BinaryConstraint.input |Tier 1|Priority 144000|Rate 0.000001|Queue: Size 10 Change -1 Load 0.56 Time 48us|Timestamp 758866452554530|Src octane-deltablue.js:409
... more log ...
[engine] opt queued id=239 OrderedCollection.size |Tier 2|Count/Thres 8750/ 8125|Queue: Size 18 Change +1 Load 0.81 Time 0us|Timestamp 758867756295139|Src octane-deltablue.js:71
[engine] opt queued id=237 BinaryConstraint.output |Tier 2|Count/Thres 8499/ 8750|Queue: Size 19 Change +1 Load 0.88 Time 0us|Timestamp 758867758263099|Src octane-deltablue.js:416
[engine] opt start id=244 EqualityConstraint.execute |Tier 1|Priority 2618289|Rate 0.000015|Queue: Size 19 Change -1 Load 0.88 Time 180us|Timestamp 758867767116908|Src octane-deltablue.js:528
... more log ...
[engine] opt done id=246 OrderedCollection.at |Tier 2|Time 89( 80+9 )ms|AST 15|Inlined 0Y 0N|IR 50/ 110|CodeSize 582|Timestamp 758873628915755|Src octane-deltablue.js:67
[engine] opt start id=237 BinaryConstraint.output |Tier 2|Priority 173536|Rate 0.000054|Queue: Size 18 Change -1 Load 0.94 Time 18us|Timestamp 758873629411012|Src octane-deltablue.js:416
[engine] opt queued id=238 Planner.addPropagate |Tier 2|Count/Thres 9375/ 8750|Queue: Size 19 Change +1 Load 0.88 Time 0us|Timestamp 758873663196884|Src octane-deltablue.js:696
[engine] opt queued id=226 Variable.addConstraint |Tier 2|Count/Thres 8771/ 9375|Queue: Size 20 Change +1 Load 0.94 Time 0us|Timestamp 758873665823697|Src octane-deltablue.js:556
[engine] opt done id=293 change |Tier 1|Time 167( 130+37 )ms|AST 60|Inlined 0Y 6N|IR 576/ 1220|CodeSize 5554|Timestamp 758873669483749|Src octane-deltablue.js:867
[engine] opt start id=270 Plan.execute |Tier 2|Priority 157871|Rate 0.000072|Queue: Size 19 Change -1 Load 1.00 Time 17us|Timestamp 758873669912101|Src octane-deltablue.js:778
[engine] opt done id=237 BinaryConstraint.output |Tier 2|Time 58( 52+6 )ms|AST 19|Inlined 0Y 0N|IR 103/ 181|CodeSize 734|Timestamp 758873687678394|Src octane-deltablue.js:416
... more log ...
[engine] opt unque. id=304 Date.prototype.valueOf |Tier 2|Count/Thres 80234/ 3125|Queue: Size 4 Change 0 Load 0.31 Time 0us|Timestamp 758899904132076|Src <builtin>:1|Reason Target inlined into only caller
以下是這些日誌中新增的資訊的快速概觀
Count/Thres- 目標的呼叫和迴圈計數，以及將編譯新增至佇列所需的閾值。Queue: Size- 編譯佇列中有多少個編譯。Queue: Change- 此事件如何影響編譯佇列（例如，某些事件可以刪除不需要的編譯工作佇列）。Queue: Load- 佇列是否超載/未載入的指標。正常負載以 1 表示，小於 1 表示未載入，大於 1 表示超載。Queue: Time- 事件耗時。Reason- 執行階段報告的事件原因。
--engine.TraceCompilationAST 命令會為每個編譯列印 Truffle AST
[engine] opt AST OrderedCollection.size <split-57429b3a> |ASTSize 10/ 10 |Calls/Thres 10559/ 3 |CallsAndLoop/Thres 10559/ 1000
FunctionRootNode
body = FunctionBodyNode
body = DualNode
left = JSWriteCurrentFrameSlotNodeGen
rhsNode = JSPrepareThisNodeGen
operandNode = AccessThisNode
right = TerminalPositionReturnNode
expression = PropertyNode
target = PropertyNode
target = JSReadCurrentFrameSlotNodeGen
cache = PropertyGetNode
cacheNode = ObjectPropertyGetNode
receiverCheck = ShapeCheckNode
cache = PropertyGetNode
cacheNode = ArrayLengthPropertyGetNode
receiverCheck = ShapeCheckNode
arrayLengthRead = ArrayLengthReadNodeGen
--engine.TraceInlining 命令會為每個編譯列印訪客語言內聯決策
[engine] inline start Plan.execute |call diff 0.00 |Recursion Depth 0 |Explore/inline ratio 1.00 |IR Nodes 2704 |Frequency 1.00 |Truffle Callees 5 |Forced false |Depth 0
[engine] Inlined Plan.size |call diff -203.75 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 175 |Frequency 101.88 |Truffle Callees 1 |Forced false |Depth 1
[engine] Inlined OrderedCollection.size <split-e13c02e> |call diff -101.88 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 157 |Frequency 101.88 |Truffle Callees 0 |Forced false |Depth 2
[engine] Inlined Plan.constraintAt |call diff -201.75 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 206 |Frequency 100.88 |Truffle Callees 1 |Forced false |Depth 1
[engine] Inlined OrderedCollection.at |call diff -100.88 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 232 |Frequency 100.88 |Truffle Callees 0 |Forced false |Depth 2
[engine] Inlined ScaleConstraint.execute |call diff -0.00 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 855 |Frequency 0.00 |Truffle Callees 0 |Forced false |Depth 1
[engine] Inlined EqualityConstraint.execute |call diff -299.63 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 295 |Frequency 99.88 |Truffle Callees 2 |Forced false |Depth 1
[engine] Inlined BinaryConstraint.output <split-1e163df7> |call diff -99.88 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 259 |Frequency 99.88 |Truffle Callees 0 |Forced false |Depth 2
[engine] Inlined BinaryConstraint.input <split-2dfade22> |call diff -99.88 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 259 |Frequency 99.88 |Truffle Callees 0 |Forced false |Depth 2
[engine] Inlined EditConstraint.execute |call diff -1.00 |Recursion Depth 0 |Explore/inline ratio NaN |IR Nodes 22 |Frequency 1.00 |Truffle Callees 0 |Forced false |Depth 1
[engine] inline done Plan.execute |call diff 0.00 |Recursion Depth 0 |Explore/inline ratio 1.00 |IR Nodes 2704 |Frequency 1.00 |Truffle Callees 5 |Forced false |Depth 0
--engine.TraceSplitting 命令會列印訪客語言分割決策
[engine] split 0-4310d43-1 Strength |ASTSize 6/ 6 |Calls/Thres 2/ 3 |CallsAndLoop/Thres 2/ 1000 |SourceSection /Users/christianhumer/graal/4dev/js-benchmarks/octane-deltablue.js~139:4062-4089
[engine] split 1-4b0d79fc-1 Strength |ASTSize 6/ 6 |Calls/Thres 2/ 3 |CallsAndLoop/Thres 2/ 1000 |SourceSection /Users/christianhumer/graal/4dev/js-benchmarks/octane-deltablue.js~140:4119-4150
--engine.TracePerformanceWarnings=(call|instanceof|store|all) 命令會列印可能不利於效能的程式碼。call 會在部分評估無法內聯虛擬執行階段呼叫時啟用警告。instanceof 會在部分評估無法將虛擬 instanceof 解析為確切類型時啟用警告。store 會在儲存位置引數不是部分評估常數時啟用警告
[engine] perf warn ScaleConstraint.execute |Partial evaluation could not inline the virtual runtime call Virtual to HotSpotMethod<ConditionProfile.profile(boolean)> (167|MethodCallTarget).
Approximated stack trace for [167 | MethodCallTarget: at com.oracle.truffle.js.nodes.control.IfNode.execute(IfNode.java:158)
at com.oracle.truffle.js.nodes.binary.DualNode.execute(DualNode.java:125)
at com.oracle.truffle.js.nodes.function.FunctionBodyNode.execute(FunctionBodyNode.java:73)
at com.oracle.truffle.js.nodes.function.FunctionRootNode.executeInRealm(FunctionRootNode.java:147)
at com.oracle.truffle.js.runtime.JavaScriptRealmBoundaryRootNode.execute(JavaScriptRealmBoundaryRootNode.java:93)
at com.oracle.truffle.runtime.OptimizedCallTarget.executeRootNode(OptimizedCallTarget.java:503)
at com.oracle.truffle.runtime.OptimizedCallTarget.profiledPERoot(OptimizedCallTarget.java:480)
--engine.CompilationStatistics 命令會在流程結束時列印編譯的統計資料
[engine] Truffle runtime statistics for engine 1
Compilations : 2763
Success : 2743
Temporary Bailouts : 17
jdk.graal.compiler.core.common.CancellationBailoutException: Compilation cancelled.: 16
jdk.graal.compiler.core.common.RetryableBailoutException: Assumption invalidated while compiling code: IsolatedObjectConstant[Object]: 1
Permanent Bailouts : 0
Failed : 0
Interrupted : 3
Invalidated : 84
Unknown Reason : 45
Profiled Argument Types : 22
validRootAssumption Split call node: 12
expression invalidatePropertyAssumption: 1
getTextPos invalidatePropertyAssumption: 1
X_OK invalidateAllPropertyAssumptions: 1
statements invalidatePropertyAssumption: 1
typed object location generalizing object type !class com.oracle.truffle.js.runtime.objects.Nullish => !class java.lang.Object Object@0[final=false][type=class com.oracle.truffle.js.runtime.objects.Nullish]: 1
Queues : 3410
Dequeues : 262
Split call node : 124
Target inlined into only caller: 87
validRootAssumption Split call node: 28
null : 17
Profiled Argument Types : 6
Splits : 5581
Compilation Accuracy : 0,969598
Queue Accuracy : 0,923167
Compilation Utilization : 2,685016
Remaining Compilation Queue : 409
Time to queue : count=3410, sum=12895957640, min= 0, average= 3781805,76, max=11311217, maxTarget=Math.floor
Time waiting in queue : count=2763, sum=1247424699, min= 40, average= 451474,74, max= 4762017, maxTarget=tryGetTypeFromEffectiveTypeNode
--------------------------- :
AST node statistics :
Truffle node count : count=2752, sum= 348085, min= 1, average= 126,48, max= 5404, maxTarget=checkSignatureDeclaration
Trivial : count=2752, sum= 124817, min= 0, average= 45,36, max= 2707, maxTarget=visitEachChild
Non Trivial : count=2752, sum= 223268, min= 1, average= 81,13, max= 3162, maxTarget=checkSignatureDeclaration
Monomorphic : count=2752, sum= 217660, min= 1, average= 79,09, max= 3042, maxTarget=checkSignatureDeclaration
Polymorphic : count=2752, sum= 4239, min= 0, average= 1,54, max= 71, maxTarget=checkSignatureDeclaration
Megamorphic : count=2752, sum= 1369, min= 0, average= 0,50, max= 49, maxTarget=checkSignatureDeclaration
Truffle call count : count=2752, sum= 7789, min= 0, average= 2,83, max= 110, maxTarget=forEachChild
Indirect : count=2752, sum= 29, min= 0, average= 0,01, max= 3, maxTarget=emitLeadingComments
Direct : count=2752, sum= 7760, min= 0, average= 2,82, max= 110, maxTarget=forEachChild
Dispatched : count=2752, sum= 6285, min= 0, average= 2,28, max= 110, maxTarget=forEachChild
Inlined : count=2752, sum= 1475, min= 0, average= 0,54, max= 60, maxTarget=parseList <split-8113>
---------- :
Cloned : count=2752, sum= 0, min= 0, average= 0,00, max= 0, maxTarget=Array.prototype.push
Not Cloned : count=2752, sum= 7747, min= 0, average= 2,82, max= 110, maxTarget=forEachChild
Truffle loops : count=2752, sum= 723, min= 0, average= 0,26, max= 12, maxTarget=pipelineEmitWithComments
--------------------------- :
Compilation Tier 1 :
Compilation Rate : 471075,74 bytes/second
Truffle Tier Rate : 1273853,94 bytes/second
Graal Tier Rate : 922948,70 bytes/second
Installation Rate : 5640071,94 bytes/second
Time for compilation (us) : count=2637, sum= 20538922, min= 727, average= 7788,75, max= 2154173, maxTarget=createPrinter
Truffle Tier (us) : count=2623, sum= 7595366, min= 255, average= 2895,68, max= 306107, maxTarget=createPrinter
Graal Tier (us) : count=2623, sum= 10483126, min= 378, average= 3996,62, max= 1665018, maxTarget=createPrinter
Code Installation (us) : count=2623, sum= 1715472, min= 39, average= 654,01, max= 183048, maxTarget=createPrinter
Graal node count :
After Truffle Tier : count=2627, sum= 1089218, min= 88, average= 414,62, max= 12999, maxTarget=forEachChild
After Graal Tier : count=2624, sum= 2190826, min= 127, average= 834,92, max= 63837, maxTarget=createPrinter
Graal compilation result :
Code size : count=2623, sum= 9675388, min= 492, average= 3688,67, max= 238448, maxTarget=createPrinter
Total frame size : count=2623, sum= 350080, min= 64, average= 133,47, max= 5328, maxTarget=createPrinter
Exception handlers : count=2623, sum= 9316, min= 1, average= 3,55, max= 125, maxTarget=forEachChild
Infopoints : count=2623, sum= 105619, min= 5, average= 40,27, max= 1837, maxTarget=forEachChild
CALL : count=2623, sum= 105619, min= 5, average= 40,27, max= 1837, maxTarget=forEachChild
Marks : count=2623, sum= 13115, min= 5, average= 5,00, max= 5, maxTarget=Array.prototype.push
Data references : count=2623, sum= 185670, min= 9, average= 70,79, max= 4153, maxTarget=createPrinter
--------------------------- :
Compilation Tier 2 :
Compilation Rate : 141825,62 bytes/second
Truffle Tier Rate : 397107,38 bytes/second
Graal Tier Rate : 243094,58 bytes/second
Installation Rate : 4122848,22 bytes/second
Time for compilation (us) : count= 123, sum= 11418247, min= 745, average= 92831,28, max= 456707, maxTarget=checkSignatureDeclaration
Truffle Tier (us) : count= 120, sum= 4077990, min= 288, average= 33983,25, max= 152158, maxTarget=WhileNode$WhileDoRepeatingNode@72d2eaac typescript-polybench.js:16129~ 'utf8ToBytes'<OSR>
Graal Tier (us) : count= 120, sum= 6661604, min= 310, average= 55513,37, max= 343028, maxTarget=checkSignatureDeclaration
Code Installation (us) : count= 120, sum= 392786, min= 42, average= 3273,22, max= 68576, maxTarget=JSArrayBufferView.@52bcd02
Graal node count :
After Truffle Tier : count= 125, sum= 331695, min= 13, average= 2653,56, max= 11989, maxTarget=checkSignatureDeclaration
After Graal Tier : count= 120, sum= 432639, min= 46, average= 3605,33, max= 19199, maxTarget=checkSignatureDeclaration
Graal compilation result :
Code size : count= 120, sum= 1619400, min= 192, average= 13495,00, max= 72744, maxTarget=checkSignatureDeclaration
Total frame size : count= 120, sum= 25728, min= 48, average= 214,40, max= 768, maxTarget=bindEach <split-2459>
Exception handlers : count= 120, sum= 1080, min= 0, average= 9,00, max= 84, maxTarget=checkSignatureDeclaration
Infopoints : count= 120, sum= 7236, min= 3, average= 60,30, max= 401, maxTarget=checkSignatureDeclaration
CALL : count= 120, sum= 7236, min= 3, average= 60,30, max= 401, maxTarget=checkSignatureDeclaration
Marks : count= 120, sum= 1116, min= 5, average= 9,30, max= 35, maxTarget=checkIndexConstraintForProperty
Data references : count= 120, sum= 25252, min= 4, average= 210,43, max= 1369, maxTarget=checkSignatureDeclaration
--engine.CompilationStatisticDetails 命令除了先前的編譯統計資料外，還會列印個別 Graal 節點的直方圖資訊
Graal nodes after Truffle tier :
FrameState : count= 168, sum= 35502, min= 1, average= 211.32, max= 2048, maxTarget=deltaBlue
FixedGuardNode : count= 168, sum= 18939, min= 0, average= 112.73, max= 1048, maxTarget=change
LoadFieldNode : count= 168, sum= 14432, min= 0, average= 85.90, max= 814, maxTarget=EditConstraint
...
Graal nodes after Graal tier :
BeginNode : count= 166, sum= 33333, min= 0, average= 200.80, max= 2110, maxTarget=change
FrameState : count= 166, sum= 30591, min= 0, average= 184.28, max= 2393, maxTarget=MeasureDefault
AMD64AddressNode : count= 166, sum= 20072, min= 0, average= 120.92, max= 1960, maxTarget=MeasureDefault
...
--engine.TraceMethodExpansion=truffleTier 命令會在每次編譯後，列印所有已展開 Java 方法的樹狀結構及其統計資料
[engine] Expansion tree for test after truffleTier:
Name Frequency | Count Size Cycles Ifs Loops Invokes Allocs | Self Count Size Cycles Ifs Loops Invokes Allocs | IRNode ASTNode Lang:File:Line:Chars
<root> 1.00 | 64 72 42 1 1 0 1 | 34 20 0 0 0 0 0 | -
OptimizedCallTarget.profiledPERoot(Object) 1.00 | 30 52 42 1 1 0 1 | 1 2 2 0 0 0 0 | 121
OptimizedCallTarget.injectArgumentsProfile(Object) 1.00 | 9 19 16 0 0 0 0 | 4 3 0 0 0 0 0 | 5
OptimizedCallTarget.unsafeCast(Object, Class, Z, Z, Z) 1.00 | 1 0 0 0 0 0 0 | 1 0 0 0 0 0 0 | 10
OptimizedCallTarget.castArgumentsImpl(Object, Class) 1.00 | 4 16 16 0 0 0 0 | 4 16 16 0 0 0 0 | 12
OptimizedCallTarget.executeRootNode(VirtualFrame) 1.00 | 20 31 24 1 1 0 1 | 0 0 0 0 0 0 0 |
JavaScriptRealmBoundaryRootNode.execute(VirtualFrame) 1.00 | 20 31 24 1 1 0 1 | 1 1 0 0 0 0 0 | 34 0 js:test.js:1:0-100
JavaScriptRealmBoundaryRootNode.getRealm() 1.00 | 1 1 0 0 0 0 0 | 0 0 0 0 0 0 0 | 0 js:test.js:1:0-100
JSContext.getRealm() 1.00 | 1 1 0 0 0 0 0 | 0 0 0 0 0 0 0 |
PolyglotReferences$AssumeSingleContext.get() 1.00 | 1 1 0 0 0 0 0 | 0 0 0 0 0 0 0 |
PolyglotReferences$WeakSingleContext.get() 1.00 | 1 1 0 0 0 0 0 | 1 1 0 0 0 0 0 | 37
FunctionRootNode.executeInRealm(VirtualFrame) 1.00 | 18 29 24 1 1 0 1 | 1 1 0 0 0 0 0 | 41 0 js:test.js:1:0-100
FunctionBodyNode.execute(VirtualFrame) 1.00 | 17 28 24 1 1 0 1 | 0 0 0 0 0 0 0 | 1 js:test.js:1:0-100
AbstractBlockNode.execute(VirtualFrame) 1.00 | 17 28 24 1 1 0 1 | 0 0 0 0 0 0 0 |
AbstractBlockNode.executeVoid(VirtualFrame, JavaScriptNode, I, I) 1.00 | 16 20 16 1 1 0 0 | 1 1 0 0 0 0 0 | 50 2 js:test.js:1:16-100
WhileNode.executeVoid(VirtualFrame) 1.00 | 15 19 16 1 1 0 0 | 0 0 0 0 0 0 0 | 7 js:test.js:3:35-84
OptimizedOSRLoopNode.execute(VirtualFrame) 101.00 | 15 19 16 1 1 0 0 | 4 3 2 0 1 0 0 | 46 8 js:test.js:3:35-84
RepeatingNode.executeRepeatingWithValue(VirtualFrame) 1.00 | 11 16 14 1 0 0 0 | 1 1 0 0 0 0 0 | 100 9 js:test.js:3:35-84
WhileNode$WhileDoRepeatingNode.executeRepeating(VirtualFrame) 101.00 | 10 15 14 1 0 0 0 | 3 2 1 1 0 0 0 | 63 9 js:test.js:3:35-84
AbstractRepeatingNode.executeCondition(VirtualFrame) 101.00 | 1 1 1 0 0 0 0 | 0 0 0 0 0 0 0 | 9 js:test.js:3:35-84
StatementNode.executeConditionAsBoolean(VirtualFrame, JavaScriptNode) 101.00 | 1 1 1 0 0 0 0 | 0 0 0 0 0 0 0 |
JSLessThanNodeGen.executeBoolean(VirtualFrame) 101.00 | 1 1 1 0 0 0 0 | 0 0 0 0 0 0 0 | 10 js:test.js:3:51-58
JSLessThanNodeGen.executeBoolean_int_int0(VirtualFrame, J) 101.00 | 1 1 1 0 0 0 0 | 0 0 0 0 0 0 0 |
JSLessThanNode.doInt(I, I) 101.00 | 1 1 1 0 0 0 0 | 1 1 1 0 0 0 0 | 59 10 js:test.js:3:51-58
AbstractRepeatingNode.executeBody(VirtualFrame) 101.00 | 6 12 12 0 0 0 0 | 0 0 0 0 0 0 0 | 9 js:test.js:3:35-84
AbstractBlockNode.executeVoid(VirtualFrame) 101.00 | 6 12 12 0 0 0 0 | 0 0 0 0 0 0 0 |
AbstractBlockNode.executeVoid(VirtualFrame, JavaScriptNode, I, I) 101.00 | 6 12 12 0 0 0 0 | 0 0 0 0 0 0 0 | 13 js:test.js:3:35-84
JSWriteCurrentFrameSlotNodeGen.executeVoid(VirtualFrame) 101.00 | 6 12 12 0 0 0 0 | 0 0 0 0 0 0 0 | 14 js:test.js:4:71-79
JSWriteCurrentFrameSlotNodeGen.executeInt(VirtualFrame) 101.00 | 3 6 6 0 0 0 0 | 0 0 0 0 0 0 0 | 14 js:test.js:4:71-79
JSAddNodeGen.executeInt(VirtualFrame) 101.00 | 3 6 6 0 0 0 0 | 0 0 0 0 0 0 0 |
JSAddNode.doInt(I, I) 101.00 | 3 6 6 0 0 0 0 | 0 0 0 0 0 0 0 |
Math.addExact(I, I) 100.00 | 3 6 6 0 0 0 0 | 3 6 6 0 0 0 0 | 75 15 js:test.js:4:71-74
LocalVarPostfixIncNodeGen.executeInt(VirtualFrame) 101.00 | 3 6 6 0 0 0 0 | 0 0 0 0 0 0 0 | 18 js:test.js:3:60-63
LocalVarPostfixIncNode.doInt(Frame) 101.00 | 3 6 6 0 0 0 0 | 0 0 0 0 0 0 0 | 18 js:test.js:3:60-63
LocalVarIncNode$IncOp.doInt(I) 101.00 | 3 6 6 0 0 0 0 | 0 0 0 0 0 0 0 |
Math.addExact(I, I) 100.00 | 3 6 6 0 0 0 0 | 3 6 6 0 0 0 0 | 85
AbstractBlockNode.executeGeneric(VirtualFrame, JavaScriptNode, I, I) 1.00 | 1 8 8 0 0 0 1 | 0 0 0 0 0 0 0 | 2 js:test.js:1:16-100
ReturnNode$TerminalPositionReturnNode.execute(VirtualFrame) 1.00 | 1 8 8 0 0 0 1 | 0 0 0 0 0 0 0 | 20 js:test.js:6:87-98
JSReadCurrentFrameSlotNodeGen.execute(VirtualFrame) 1.00 | 1 8 8 0 0 0 1 | 0 0 0 0 0 0 0 |
Integer.valueOf(I) 1.00 | 1 8 8 0 0 0 1 | 1 8 8 0 0 0 1 | 139 21 js:test.js:6:94-97
--engine.TraceNodeExpansion=truffleTier 命令會在每次編譯後，列印所有已展開 Truffle 節點的樹狀結構及其統計資料。此檢視會依節點 ID 將方法展開樹狀結構分組
[engine] Expansion tree for test after truffleTier:
Name Frequency | Count Size Cycles Ifs Loops Invokes Allocs | Self Count Size Cycles Ifs Loops Invokes Allocs | IRNode ASTNode Lang:File:Line:Chars
<call-root> 1.00 | 64 72 42 1 1 0 1 | 44 41 18 0 0 0 0 | 0
FunctionRootNode 1.00 | 20 31 24 1 1 0 1 | 3 3 0 0 0 0 0 | 34 0 js:test.js:1:0-100
FunctionBodyNode 1.00 | 17 28 24 1 1 0 1 | 0 0 0 0 0 0 0 | 1 js:test.js:1:0-100
ExprBlockNode 1.00 | 17 28 24 1 1 0 1 | 1 1 0 0 0 0 0 | 50 2 js:test.js:1:16-100
WhileNode 1.00 | 15 19 16 1 1 0 0 | 0 0 0 0 0 0 0 | 7 js:test.js:3:35-84
OptimizedOSRLoopNode$OptimizedDefaultOSRLoopNode 101.00 | 15 19 16 1 1 0 0 | 4 3 2 0 1 0 0 | 46 8 js:test.js:3:35-84
WhileNode$WhileDoRepeatingNode 101.00 | 11 16 14 1 0 0 0 | 4 3 1 1 0 0 0 | 100 9 js:test.js:3:35-84
JSLessThanNodeGen 101.00 | 1 1 1 0 0 0 0 | 1 1 1 0 0 0 0 | 59 10 js:test.js:3:51-58
VoidBlockNode 101.00 | 6 12 12 0 0 0 0 | 0 0 0 0 0 0 0 | 13 js:test.js:3:35-84
JSWriteCurrentFrameSlotNodeGen 101.00 | 6 12 12 0 0 0 0 | 0 0 0 0 0 0 0 | 14 js:test.js:4:71-79
JSAddNodeGen 100.00 | 3 6 6 0 0 0 0 | 3 6 6 0 0 0 0 | 75 15 js:test.js:4:71-74
LocalVarPostfixIncNodeGen 100.00 | 3 6 6 0 0 0 0 | 3 6 6 0 0 0 0 | 85 18 js:test.js:3:60-63
ReturnNode$TerminalPositionReturnNode 1.00 | 1 8 8 0 0 0 1 | 0 0 0 0 0 0 0 | 20 js:test.js:6:87-98
JSReadCurrentFrameSlotNodeGen 1.00 | 1 8 8 0 0 0 1 | 1 8 8 0 0 0 1 | 139 21 js:test.js:6:94-97
--engine.MethodExpansionStatistics=truffleTier 命令會在執行結束時，列印部分評估期間展開的 Java 方法的統計資料。這有助於偵測產生過多或某些意外 Graal 節點的程式碼
[engine] Method expansion statistics after truffleTier:
Name Count IR Nodes (min avg max) Size (min avg max) Cycles (min avg max) Ifs Loops Invokes Allocs | Max IRNode ASTNode Unit:Lang:File:Line:Chars
<no-source-position> 1 212 (212 212.0 212) 117 (117 117.0 117) 0 (0 0.0 0) 0 0 0 0 | 0 mandelbrot
OptimizedOSRLoopNode.execute(VirtualFrame) 4 13 (0 3.3 5) 9 (0 2.3 3) 6 (0 1.5 2) 0 3 0 0 | 172 60 mandelbrot:js:mandelbrot.js:68:2589-2888
Math.addExact(I, I) 4 12 (3 3.0 3) 24 (6 6.0 6) 24 (6 6.0 6) 0 0 0 0 | 485 103 mandelbrot:js:mandelbrot.js:80:2874-2875
WhileNode$WhileDoRepeatingNode.executeRepeating(VirtualFrame) 4 9 (0 2.3 3) 6 (0 1.5 2) 3 (0 0.8 1) 3 0 0 0 | 88 17 mandelbrot:js:mandelbrot.js:57:2374-3431
JSTypes.intToDouble(I) 7 7 (1 1.0 1) 7 (1 1.0 1) 24 (0 3.4 8) 0 0 0 0 | 144 41 mandelbrot:js:mandelbrot.js:62:2478-2486
OptimizedCallTarget.castArgumentsImpl(Object, Class) 1 7 (7 7.0 7) 25 (25 25.0 25) 24 (24 24.0 24) 0 0 0 0 | 12 mandelbrot
JSWriteCurrentFrameSlotNodeGen.executeVoid(VirtualFrame) 6 6 (0 1.0 3) 4 (0 0.7 2) 2 (0 0.3 1) 2 0 0 0 | 563 46 mandelbrot:js:mandelbrot.js:64:2519-2544
AbstractBlockNode.executeVoid(VirtualFrame, JavaScriptNode, I, I) 8 6 (0 0.8 4) 6 (0 0.8 4) 0 (0 0.0 0) 0 0 0 0 | 177 39 mandelbrot:js:mandelbrot.js:61:2459-3416
Math.multiplyExact(I, I) 4 6 (1 1.5 2) 12 (2 3.0 4) 20 (4 5.0 6) 0 0 0 0 | 155 49 mandelbrot:js:mandelbrot.js:64:2529-2534
OptimizedCallTarget.injectArgumentsProfile(Object) 1 4 (4 4.0 4) 3 (3 3.0 3) 0 (0 0.0 0) 0 0 0 0 | 5 mandelbrot
JSMultiplyNode.doDouble(D, D) 4 4 (1 1.0 1) 4 (1 1.0 1) 8 (2 2.0 2) 0 0 0 0 | 280 75 mandelbrot:js:mandelbrot.js:70:2657-2663
IfNode.executeVoid(VirtualFrame) 3 3 (0 1.0 3) 2 (0 0.7 2) 1 (0 0.3 1) 1 0 0 0 | 606 126 mandelbrot:js:mandelbrot.js:93:3240-3397
Math.subtractExact(I, I) 1 3 (3 3.0 3) 6 (6 6.0 6) 6 (6 6.0 6) 0 0 0 0 | 589 129 mandelbrot:js:mandelbrot.js:93:3249-3257
JSSubtractNode.doDouble(D, D) 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 167 47 mandelbrot:js:mandelbrot.js:64:2528-2544
JSLessThanNode.doInt(I, I) 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 187 62 mandelbrot:js:mandelbrot.js:68:2596-2602
JSAddNode.doDouble(D, D) 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 263 67 mandelbrot:js:mandelbrot.js:69:2623-2639
JSDivideNode.doDouble(D, D) 2 2 (1 1.0 1) 2 (1 1.0 1) 64 (32 32.0 32) 0 0 0 0 | 165 48 mandelbrot:js:mandelbrot.js:64:2528-2540
JSBitwiseXorNode.doInteger(I, I) 2 2 (1 1.0 1) 2 (1 1.0 1) 2 (1 1.0 1) 0 0 0 0 | 575 119 mandelbrot:js:mandelbrot.js:90:3170-3173
JSEqualNode.doInt(I, I) 2 2 (1 1.0 1) 2 (1 1.0 1) 2 (1 1.0 1) 0 0 0 0 | 592 127 mandelbrot:js:mandelbrot.js:93:3244-3257
RepeatingNode.executeRepeatingWithValue(VirtualFrame) 4 1 (0 0.3 1) 1 (0 0.3 1) 0 (0 0.0 0) 0 0 0 0 | 499 61 mandelbrot:js:mandelbrot.js:68:2589-2888
FunctionRootNode.executeInRealm(VirtualFrame) 1 1 (1 1.0 1) 1 (1 1.0 1) 0 (0 0.0 0) 0 0 0 0 | 53 0 mandelbrot:js:mandelbrot.js:50:2279-3447
OptimizedCallTarget.profiledPERoot(Object) 1 1 (1 1.0 1) 2 (2 2.0 2) 2 (2 2.0 2) 0 0 0 0 | 737 mandelbrot
PolyglotReferences$WeakSingleContext.get() 1 1 (1 1.0 1) 1 (1 1.0 1) 0 (0 0.0 0) 0 0 0 0 | 41 mandelbrot
JSLeftShiftNode.doInteger(I, I) 1 1 (1 1.0 1) 1 (1 1.0 1) 1 (1 1.0 1) 0 0 0 0 | 619 134 mandelbrot:js:mandelbrot.js:94:3269-3277
Integer.intValue() 1 1 (1 1.0 1) 2 (2 2.0 2) 2 (2 2.0 2) 0 0 0 0 | 50 4 mandelbrot:js:1:0-0
JSSubtractNode.doInt(I, I) 2 1 (0 0.5 1) 1 (0 0.5 1) 1 (0 0.5 1) 0 0 0 0 | 940 136 mandelbrot:js:mandelbrot.js:94:3282-3295
JSLeftShiftConstantNode.doInteger(I) 1 1 (1 1.0 1) 1 (1 1.0 1) 1 (1 1.0 1) 0 0 0 0 | 527 107 mandelbrot:js:mandelbrot.js:83:2907-2922
JSSubtractNodeGen.executeDouble(VirtualFrame) 3 1 (0 0.3 1) 1 (0 0.3 1) 0 (0 0.0 0) 0 0 0 0 | 33 47 mandelbrot:js:mandelbrot.js:64:2528-2544
JSReadCurrentFrameSlotNodeGen.executeInt(VirtualFrame) 1 1 (1 1.0 1) 1 (1 1.0 1) 0 (0 0.0 0) 0 0 0 0 | 74 19 mandelbrot:js:mandelbrot.js:57:2381-2382
Integer.valueOf(I) 1 1 (1 1.0 1) 8 (8 8.0 8) 8 (8 8.0 8) 0 0 0 1 | 939 154 mandelbrot:js:mandelbrot.js:105:3442-3445
JSBitwiseOrNode.doInteger(I, I) 1 1 (1 1.0 1) 1 (1 1.0 1) 1 (1 1.0 1) 0 0 0 0 | 532 106 mandelbrot:js:mandelbrot.js:83:2907-2931
JSGreaterThanNode.doDouble(D, D) 1 1 (1 1.0 1) 1 (1 1.0 1) 2 (2 2.0 2) 0 0 0 0 | 461 93 mandelbrot:js:mandelbrot.js:76:2800-2815
OptimizedCallTarget.unsafeCast(Object, Class, Z, Z, Z) 1 1 (1 1.0 1) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 10 mandelbrot
JavaScriptRealmBoundaryRootNode.execute(VirtualFrame) 1 1 (1 1.0 1) 1 (1 1.0 1) 0 (0 0.0 0) 0 0 0 0 | 38 mandelbrot
JSLeftShiftConstantNodeGen.executeInt(VirtualFrame) 1 1 (1 1.0 1) 1 (1 1.0 1) 0 (0 0.0 0) 0 0 0 0 | 36 107 mandelbrot:js:mandelbrot.js:83:2907-2922
DualNode.execute(VirtualFrame) 1 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 2 mandelbrot:js:mandelbrot.js:50:2279-3447
...
--engine.NodeExpansionStatistics=truffleTier 命令會在執行結束時，列印部分評估期間展開的 Truffle 節點的統計資料。這有助於偵測產生過多或某些意外 Graal 節點的程式碼。它也會顯示編譯期間觀察到的個別特化組合
[engine] Node expansion statistics after truffleTier:
Name Count IR Nodes (min avg max) Size (min avg max) Cycles (min avg max) Ifs Loops Invokes Allocs | Max IRNode ASTNode Unit:Lang:File:Line:Chars
<call-root> 1 226 (226 226.0 226) 148 (148 148.0 148) 26 (26 26.0 26) 0 0 0 0 | 0 mandelbrot
OptimizedOSRLoopNode$OptimizedDefaultOSRLoopNode 4 13 (0 3.3 5) 9 (0 2.3 3) 6 (0 1.5 2) 0 3 0 0 | 172 60 mandelbrot:js:mandelbrot.js:68:2589-2888
JSAddConstantRightNumberNodeGen 4 12 (3 3.0 3) 24 (6 6.0 6) 24 (6 6.0 6) 0 0 0 0 | 485 103 mandelbrot:js:mandelbrot.js:80:2874-2875
[doInt(I)] 4 12 (3 3.0 3) 24 (6 6.0 6) 24 (6 6.0 6) 0 0 0 0 | 485 103 mandelbrot:js:mandelbrot.js:80:2874-2875
JSMultiplyNodeGen 6 11 (1 1.8 3) 17 (1 2.8 6) 28 (2 4.7 10) 0 0 0 0 | 155 49 mandelbrot:js:mandelbrot.js:64:2529-2534
[doIntALargerZero(I, I), doIntBLargerZero(I, I)] 2 6 (3 3.0 3) 12 (6 6.0 6) 20 (10 10.0 10) 0 0 0 0 | 155 49 mandelbrot:js:mandelbrot.js:64:2529-2534
[doDouble(D, D)] 4 5 (1 1.3 2) 5 (1 1.3 2) 8 (2 2.0 2) 0 0 0 0 | 275 75 mandelbrot:js:mandelbrot.js:70:2657-2663
WhileNode$WhileDoRepeatingNode 4 10 (0 2.5 4) 7 (0 1.8 3) 3 (0 0.8 1) 3 0 0 0 | 499 61 mandelbrot:js:mandelbrot.js:68:2589-2888
JSSubtractNodeGen 5 9 (1 1.8 3) 12 (1 2.4 6) 10 (1 2.0 6) 0 0 0 0 | 589 129 mandelbrot:js:mandelbrot.js:93:3249-3257
[doDouble(D, D)] 3 5 (1 1.7 2) 5 (1 1.7 2) 3 (1 1.0 1) 0 0 0 0 | 33 47 mandelbrot:js:mandelbrot.js:64:2528-2544
[doInt(I, I)] 2 4 (1 2.0 3) 7 (1 3.5 6) 7 (1 3.5 6) 0 0 0 0 | 589 129 mandelbrot:js:mandelbrot.js:93:3249-3257
JSWriteCurrentFrameSlotNodeGen 18 7 (0 0.4 3) 5 (0 0.3 2) 2 (0 0.1 1) 2 0 0 0 | 563 46 mandelbrot:js:mandelbrot.js:64:2519-2544
JSDivideNodeGen 2 5 (2 2.5 3) 5 (2 2.5 3) 88 (40 44.0 48) 0 0 0 0 | 158 48 mandelbrot:js:mandelbrot.js:64:2528-2540
[doDouble(D, D)] 2 5 (2 2.5 3) 5 (2 2.5 3) 88 (40 44.0 48) 0 0 0 0 | 158 48 mandelbrot:js:mandelbrot.js:64:2528-2540
VoidBlockNode 7 5 (0 0.7 4) 5 (0 0.7 4) 0 (0 0.0 0) 0 0 0 0 | 177 39 mandelbrot:js:mandelbrot.js:61:2459-3416
JSAddNodeGen 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 263 67 mandelbrot:js:mandelbrot.js:69:2623-2639
[doDouble(D, D)] 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 263 67 mandelbrot:js:mandelbrot.js:69:2623-2639
JSLessThanNodeGen 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 187 62 mandelbrot:js:mandelbrot.js:68:2596-2602
[doInt(I, I)] 3 3 (1 1.0 1) 3 (1 1.0 1) 3 (1 1.0 1) 0 0 0 0 | 187 62 mandelbrot:js:mandelbrot.js:68:2596-2602
IfNode 4 3 (0 0.8 3) 2 (0 0.5 2) 1 (0 0.3 1) 1 0 0 0 | 606 126 mandelbrot:js:mandelbrot.js:93:3240-3397
JSGreaterThanNodeGen 1 2 (2 2.0 2) 2 (2 2.0 2) 2 (2 2.0 2) 0 0 0 0 | 460 93 mandelbrot:js:mandelbrot.js:76:2800-2815
[doDouble(D, D)] 1 2 (2 2.0 2) 2 (2 2.0 2) 2 (2 2.0 2) 0 0 0 0 | 460 93 mandelbrot:js:mandelbrot.js:76:2800-2815
JSBitwiseXorNodeGen 2 2 (1 1.0 1) 2 (1 1.0 1) 2 (1 1.0 1) 0 0 0 0 | 575 119 mandelbrot:js:mandelbrot.js:90:3170-3173
[doInteger(I, I)] 2 2 (1 1.0 1) 2 (1 1.0 1) 2 (1 1.0 1) 0 0 0 0 | 575 119 mandelbrot:js:mandelbrot.js:90:3170-3173
JSLeftShiftConstantNodeGen 1 2 (2 2.0 2) 2 (2 2.0 2) 1 (1 1.0 1) 0 0 0 0 | 36 107 mandelbrot:js:mandelbrot.js:83:2907-2922
[doInteger(I)] 1 2 (2 2.0 2) 2 (2 2.0 2) 1 (1 1.0 1) 0 0 0 0 | 36 107 mandelbrot:js:mandelbrot.js:83:2907-2922
JSReadCurrentFrameSlotNodeGen 2 2 (1 1.0 1) 9 (1 4.5 8) 8 (0 4.0 8) 0 0 0 1 | 74 19 mandelbrot:js:mandelbrot.js:57:2381-2382
JSEqualNodeGen 2 2 (1 1.0 1) 2 (1 1.0 1) 2 (1 1.0 1) 0 0 0 0 | 592 127 mandelbrot:js:mandelbrot.js:93:3244-3257
[doInt(I, I)] 2 2 (1 1.0 1) 2 (1 1.0 1) 2 (1 1.0 1) 0 0 0 0 | 592 127 mandelbrot:js:mandelbrot.js:93:3244-3257
FunctionRootNode 1 2 (2 2.0 2) 2 (2 2.0 2) 0 (0 0.0 0) 0 0 0 0 | 53 0 mandelbrot:js:mandelbrot.js:50:2279-3447
ExprBlockNode 1 1 (1 1.0 1) 1 (1 1.0 1) 0 (0 0.0 0) 0 0 0 0 | 69 5 mandelbrot:js:mandelbrot.js:50:2305-3447
JSBitwiseOrNodeGen 1 1 (1 1.0 1) 1 (1 1.0 1) 1 (1 1.0 1) 0 0 0 0 | 532 106 mandelbrot:js:mandelbrot.js:83:2907-2931
[doInteger(I, I)] 1 1 (1 1.0 1) 1 (1 1.0 1) 1 (1 1.0 1) 0 0 0 0 | 532 106 mandelbrot:js:mandelbrot.js:83:2907-2931
AccessIndexedArgumentNode 1 1 (1 1.0 1) 2 (2 2.0 2) 2 (2 2.0 2) 0 0 0 0 | 50 4 mandelbrot:js:1:0-0
JSLeftShiftNodeGen 2 1 (0 0.5 1) 1 (0 0.5 1) 1 (0 0.5 1) 0 0 0 0 | 619 134 mandelbrot:js:mandelbrot.js:94:3269-3277
[doInteger(I, I)] 1 1 (1 1.0 1) 1 (1 1.0 1) 1 (1 1.0 1) 0 0 0 0 | 619 134 mandelbrot:js:mandelbrot.js:94:3269-3277
<unknown> 1 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 134 mandelbrot:js:mandelbrot.js:94:3269-3277
FunctionBodyNode 1 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 1 mandelbrot:js:mandelbrot.js:50:2279-3447
ReturnNode$TerminalPositionReturnNode 1 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 153 mandelbrot:js:mandelbrot.js:105:3435-3445
DualNode 1 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 2 mandelbrot:js:mandelbrot.js:50:2279-3447
WhileNode 4 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 15 mandelbrot:js:mandelbrot.js:57:2374-3431
DirectBreakTargetNode 2 0 (0 0.0 0) 0 (0 0.0 0) 0 (0 0.0 0) 0 0 0 0 | 14 mandelbrot:js:mandelbrot.js:50:2305-3447
--engine.InstrumentBoundaries 命令會在流程結束時，列印從已編譯程式碼進行的執行階段呼叫 (@TruffleBoundary) 的相關資訊。這些呼叫會導致物件逸出（對進一步最佳化而言是黑盒子），因此通常應盡量減少。另請參閱分支檢測指南，以了解有關檢測分支和邊界的更多詳細資訊。
Execution profile (sorted by hotness)
=====================================
0: *******************************************************************************
1:
com.oracle.truffle.js.nodes.binary.JSAddNode.doStringInt(JSAddNode.java:177) [bci: 2]
[0] count = 22525269
com.oracle.truffle.js.builtins.ConstructorBuiltins$ConstructDateNode.constructDateZero(ConstructorBuiltins.java:837) [bci: 6]
[1] count = 69510
--engine.InstrumentBranches 命令會在流程結束時，列印已編譯程式碼中分支使用的相關資訊
Execution profile (sorted by hotness)
=====================================
2: ***************
1: **************
5: *************
4: ************
3: *********
10: **
8: *
9: *
14: *
...
com.oracle.truffle.js.nodes.access.PropertyGetNode.getValueOrDefault(PropertyGetNode.java:301) [bci: 55]
[2] state = BOTH(if=36486564#, else=44603498#)
com.oracle.truffle.js.nodes.control.IfNode.execute(IfNode.java:158) [bci: 12]
[1] state = BOTH(if=72572593#, else=1305851#)
com.oracle.truffle.js.nodes.function.JSFunctionCallNode.executeCall(JSFunctionCallNode.java:233) [bci: 18]
[5] state = BOTH(if=38703322#, else=32550439#)
com.oracle.truffle.js.nodes.access.PropertyCacheNode$PrototypeShapeCheckNode.accept(PropertyCacheNode.java:364) [bci: 4]
[4] state = ELSE(if=0#, else=64094316#)
com.oracle.truffle.js.nodes.control.WhileNode$WhileDoRepeatingNode.executeRepeating(WhileNode.java:230) [bci: 5]
[3] state = BOTH(if=44392142#, else=7096299#)
...
--engine.SpecializationStatistics 命令會列印關於節點類別及其 Truffle DSL 特化使用方式的詳細直方圖。請參閱特化統計資料，以取得如何使用它的教學。
注意：特化統計資料需要重新編譯直譯器。
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
| Name Instances Executions Executions per instance
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
| JSWriteCurrentFrameSlotNodeGen 8 (17%) 18 (12%) Min= 1 Avg= 2.25 Max= 5 MaxNode= test.js~5-7:76-128
| doBoolean <boolean> 1 (13%) 1 (6%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~4:52-71
| doInt <int> 1 (13%) 1 (6%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~5-7:76-128
| doSafeIntegerInt 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| doSafeInteger 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| doLong 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| doDouble 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| doObject 7 (88%) 16 (89%) Min= 1 Avg= 2.29 Max= 5 MaxNode= test.js~5-7:76-128
| <DynamicObjectBasic> 6 (86%) 12 (75%) Min= 1 Avg= 2.00 Max= 5 MaxNode= test.js~5-7:76-128
| <IteratorRecord> 1 (14%) 1 (6%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~1-8:16-130
| <String> 2 (29%) 2 (13%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~5-7:76-128
| <Integer> 1 (14%) 1 (6%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~6:105-123
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------
| [doBoolean] 1 (13%) 1 (6%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~4:52-71
| [doInt, doObject] 1 (13%) 4 (22%) Min= 4 Avg= 4.00 Max= 4 MaxNode= test.js~5-7:76-128
| doInt 1 (100%) 1 (25%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~5-7:76-128
| doObject 1 (100%) 3 (75%) Min= 3 Avg= 3.00 Max= 3 MaxNode= test.js~5-7:76-128
| [doObject] 6 (75%) 13 (72%) Min= 1 Avg= 2.17 Max= 5 MaxNode= test.js~5-7:76-128
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
| Name Instances Executions Executions per instance
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
| JSReadCurrentFrameSlotNodeGen 8 (17%) 25 (17%) Min= 1 Avg= 3.13 Max= 5 MaxNode= test.js~5-7:76-128
| doBoolean 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| doInt <no-args> 1 (13%) 1 (4%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~5:81-87
| doDouble 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| doObject <no-args> 8 (100%) 24 (96%) Min= 1 Avg= 3.00 Max= 5 MaxNode= test.js~5-7:76-128
| doSafeInteger 0 (0%) 0 (0%) Min= 0 Avg= 0.00 Max= 0 MaxNode= -
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------
| [doInt, doObject] 1 (13%) 4 (16%) Min= 4 Avg= 4.00 Max= 4 MaxNode= test.js~5:81-87
| doInt 1 (100%) 1 (25%) Min= 1 Avg= 1.00 Max= 1 MaxNode= test.js~5:81-87
| doObject 1 (100%) 3 (75%) Min= 3 Avg= 3.00 Max= 3 MaxNode= test.js~5:81-87
| [doObject] 7 (88%) 21 (84%) Min= 1 Avg= 3.00 Max= 5 MaxNode= test.js~5-7:76-128
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
控制編譯的內容 #
為了充分利用先前的選項，請將編譯的範圍限制在您感興趣的方法。
-
--engine.CompileOnly=foo將編譯限制為名稱中包含foo的方法。將其與傳回值或接受參數組合使用，以避免程式碼被編譯掉。 -
--engine.CompileImmediately會在方法執行時立即編譯方法。 -
--engine.BackgroundCompilation=false會同步編譯，這可以簡化問題。 -
--compiler.Inlining=false會停用內聯，這可以使程式碼更容易理解。 -
--engine.OSR=false會停用堆疊上替換 (例如，while迴圈主體的編譯)，這可以使程式碼更容易理解。 -
--engine.Compilation=false會完全關閉 Truffle 編譯。
除錯反最佳化 #
有時，已編譯的程式碼會意外地反最佳化（從 Truffle 編譯的程式碼返回直譯器）。以下是一些調查程式碼為何被反最佳化的方法。避免重複反最佳化對於效能非常重要。
--engine.TraceCompilation 選項會顯示帶有 [engine] opt deopt 前綴的去最佳化，這對於評估是否發生了許多去最佳化很有用。但是，它不會顯示其他詳細資訊。
從堆疊中使用 FrameInstance#getFrame(READ_WRITE|MATERIALIZE) 具體化框架會導致去最佳化（但不會導致失效）。這些去最佳化可以使用 --engine.TraceDeoptimizeFrame 追蹤。
當使用原生映像檔時，您需要使用 -H:+IncludeNodeSourcePositions 建構原生映像檔，才能啟用去最佳化的堆疊追蹤。預設情況下，為了節省映像檔大小，這些追蹤是被禁用的。
在原生映像檔上，--engine.TraceTransferToInterpreter 會列印任何去最佳化的精確堆疊追蹤，它實際上與 --vm.XX:+TraceDeoptimization --engine.NodeSourcePositions 相同。由於有堆疊追蹤，這通常是找到去最佳化來源最有效的方式。
[Deoptimization initiated
name: String#[]
sp: 0x7ffd7b992710 ip: 0x7f26a8d8079f
reason: TransferToInterpreter action: InvalidateReprofile
debugId: 25 speculation: jdk.vm.ci.meta.SpeculationLog$NoSpeculationReason@13dbed9e
stack trace that triggered deoptimization:
at org.truffleruby.core.string.StringNodesFactory$StringSubstringPrimitiveNodeFactory$StringSubstringPrimitiveNodeGen.execute(StringNodesFactory.java:12760)
at org.truffleruby.core.string.StringNodes$GetIndexNode.substring(StringNodes.java:836)
at org.truffleruby.core.string.StringNodes$GetIndexNode.getIndex(StringNodes.java:650)
at org.truffleruby.core.string.StringNodesFactory$GetIndexNodeFactory$GetIndexNodeGen.execute(StringNodesFactory.java:1435)
at org.truffleruby.language.RubyCoreMethodRootNode.execute(RubyCoreMethodRootNode.java:53)
at com.oracle.truffle.runtime.OptimizedCallTarget.executeRootNode(OptimizedCallTarget.java:632)
at com.oracle.truffle.runtime.OptimizedCallTarget.profiledPERoot(OptimizedCallTarget.java:603)
[Deoptimization of frame
name: String#[]
sp: 0x7ffd7b992710 ip: 0x7f26a8d8079f
stack trace where execution continues:
at org.truffleruby.core.string.StringNodesFactory$StringSubstringPrimitiveNodeFactory$StringSubstringPrimitiveNodeGen.execute(StringNodesFactory.java:12760) bci 99 return address 0x4199a1d
at org.truffleruby.core.string.StringNodes$GetIndexNode.substring(StringNodes.java:836) bci 32 duringCall return address 0x41608e0
at org.truffleruby.core.string.StringNodes$GetIndexNode.getIndex(StringNodes.java:650) bci 25 duringCall return address 0x415f197
at org.truffleruby.core.string.StringNodesFactory$GetIndexNodeFactory$GetIndexNodeGen.execute(StringNodesFactory.java:1435) bci 109 duringCall return address 0x4182391
at org.truffleruby.language.RubyCoreMethodRootNode.execute(RubyCoreMethodRootNode.java:53) bci 14 duringCall return address 0x4239a29
at com.oracle.truffle.runtime.OptimizedCallTarget.executeRootNode(OptimizedCallTarget.java:632) bci 9 duringCall return address 0x3f1c4c9
at com.oracle.truffle.runtime.OptimizedCallTarget.profiledPERoot(OptimizedCallTarget.java:603) bci 37 duringCall return address 0x3f1d965
]
]
在 HotSpot 上，--engine.TraceTransferToInterpreter 僅針對通過 CompilerDirectives.transferToInterpreterAndInvalidate() 或 CompilerDirectives.transferToInterpreter() 進行的明確去最佳化列印堆疊追蹤。如果去最佳化是由其他原因引起的，則報告的位置可能不正確。在這種情況下，即使原因不是它，它也會報告下一個 CompilerDirectives.transferToInterpreter* 呼叫的堆疊追蹤。
[engine] transferToInterpreter at
BinaryConstraint.output(../../../../4dev/js-benchmarks/octane-deltablue.js:416)
Constraint.satisfy(../../../../4dev/js-benchmarks/octane-deltablue.js:183)
Planner.incrementalAdd(../../../../4dev/js-benchmarks/octane-deltablue.js:597) <split-609bcfb6>
Constraint.addConstraint(../../../../4dev/js-benchmarks/octane-deltablue.js:165) <split-7d94beb9>
UnaryConstraint(../../../../4dev/js-benchmarks/octane-deltablue.js:219) <split-560348e6>
Function.prototype.call(<builtin>:1) <split-1df8b5b8>
EditConstraint(../../../../4dev/js-benchmarks/octane-deltablue.js:315) <split-23202fce>
...
com.oracle.truffle.api.CompilerDirectives.transferToInterpreterAndInvalidate(CompilerDirectives.java:90)
com.oracle.truffle.js.nodes.access.PropertyCacheNode.deoptimize(PropertyCacheNode.java:1269)
com.oracle.truffle.js.nodes.access.PropertyGetNode.getValueOrDefault(PropertyGetNode.java:305)
com.oracle.truffle.js.nodes.access.PropertyGetNode.getValueOrUndefined(PropertyGetNode.java:191)
com.oracle.truffle.js.nodes.access.PropertyNode.executeWithTarget(PropertyNode.java:153)
com.oracle.truffle.js.nodes.access.PropertyNode.execute(PropertyNode.java:140)
...
在 HotSpot 上，--vm.XX:+UnlockDiagnosticVMOptions --vm.XX:+DebugNonSafepoints --vm.XX:+TraceDeoptimization 會列印所有去最佳化事件（但沒有堆疊追蹤），無論程式碼是由 Truffle 還是傳統編譯器編譯的。 TraceDeoptimization 選項可能需要使用 fastdebug JDK。
Uncommon trap bci=9 pc=0x00000001097f2235, relative_pc=501, method=com.oracle.truffle.js.nodes.access.PropertyNode.executeInt(Ljava/lang/Object;Ljava/lang/Object;)I, debug_id=0
Uncommon trap occurred in com.oracle.truffle.runtime.OptimizedCallTarget::profiledPERoot compiler=JVMCI compile_id=2686 (JVMCI: installed code name=BinaryConstraint.output#2) (@0x00000001097f2235) thread=5891 reason=transfer_to_interpreter action=reinterpret unloaded_class_index=-1 debug_id=0
最後，在原生映像檔上，--vm.XX:+TraceDeoptimizationDetails 會列印額外資訊。
[Deoptimization initiated
name: BinaryConstraint.output
sp: 0x7ffee7324d90 ip: 0x1126c51a8
reason: TransferToInterpreter action: InvalidateReprofile
debugId: 3 speculation: jdk.vm.ci.meta.SpeculationLog$NoSpeculationReason@10f942aa0
[Deoptimization of frame
name: BinaryConstraint.output
sp: 0x7ffee7324d90 ip: 0x1126c51a8
stack trace where execution continues:
at com.oracle.truffle.runtime.OptimizedCallTarget.profiledPERoot(OptimizedCallTarget.java:475) bci 0 return address 0x10aab9e5e
com.oracle.truffle.runtime.OptimizedCallTarget.profiledPERoot(OptimizedCallTarget.java:475)
bci: 0 deoptMethodOffset: 35524160 deoptMethod: 0x10aab9e40 return address: 0x10aab9e5e offset: 0
slot 0 kind: Object value: com.oracle.svm.truffle.api.SubstrateOptimizedCallTarget@0x112cbbaa0 offset: 64
slot 1 kind: Object value: [Ljava.lang.Object;@0x1144a7db0 offset: 56
]
]
您可能會注意到這些選項的輸出中存在 debugId 或 debug_id。只有當您也啟用傾印時，才可能設定此 ID，例如透過 --vm.Djdk.graal.Dump=Truffle:1（請參閱下文）。在這種情況下，除錯 ID 將對應於 IGV 圖形中節點的 ID。首先，開啟相關編譯的第一個階段。該 ID 可以透過 IGV 的 Search in Nodes 搜尋框中的 id=NUMBER 搜尋，然後選取 Open Search for node NUMBER in Node Searches window，然後點擊 Search in following phases 按鈕。
除錯失效 #
當編譯的 CallTarget 被丟棄時，就會發生失效。
最常見的原因是：
- 明確的
CompilerDirectives.transferToInterpreterAndInvalidate()（內部失效） - 該 CallTarget 使用的其中一個
Assumption已失效（外部失效）。使用--engine.TraceAssumptions追蹤這些失效的更多詳細資訊。
--engine.TraceCompilation 選項也會顯示帶有 [engine] opt inv. 前綴的 CallTarget 失效。
理想圖形視覺化工具 #
理想圖形視覺化工具 (IGV) 是一種用於了解 Truffle AST 和 Graal 編譯器圖形的工具。
典型的用法是使用 --vm.Djdk.graal.Dump=Truffle:1 --vm.Djdk.graal.PrintGraph=Network 執行，這會向您顯示 Truffle AST、來賓語言呼叫圖以及 Graal 圖形離開 Truffle 階段時的情況。如果省略 -Djdk.graal.PrintGraph=Network 標誌，則傾印檔案會放置在 graal_dumps 目錄中，您應該在 IGV 中開啟該目錄。
使用 --vm.Djdk.graal.Dump=Truffle:2 在每個編譯器階段之間傾印 Graal 圖形。
C1 視覺化工具 #
C1 視覺化工具是一種用於了解 GraalVM 的低階 IR (LIR)、暫存器配置和程式碼產生階段的工具。它可在此處取得：http://lafo.ssw.uni-linz.ac.at/c1visualizer/。
典型的用法是 --vm.Djdk.graal.Dump=:3。檔案會放置在 graal_dumps 目錄中，您應該在 C1 視覺化工具中開啟該目錄。
反組譯器 #
--vm.XX:+UnlockDiagnosticVMOptions --vm.XX:+PrintAssembly 命令組合會列印組合語言程式碼。您將需要使用 graal/compiler 中的 mx hsdis 安裝 hsdis，或者從 此處 手動將其安裝到目前目錄中。
典型的用法是 --vm.Djdk.graal.Dump --vm.Djdk.graal.PrintBackendCFG=true。檔案會放置在 graal_dumps 目錄中，您應該在 C1 視覺化工具中開啟該目錄。
與 --vm.XX:TieredStopAtLevel=0 結合使用可停用執行階段常式的編譯，以便更容易找到您的來賓語言方法。
注意：您也可以在 C1 視覺化工具中查看組合語言程式碼。
這些是最佳化或除錯 Truffle 直譯器最常見且功能最強大的方法。