Ignore:
Timestamp:
Apr 23, 2009, 8:47:50 PM (16 years ago)
Author:
[email protected]
Message:

BUG 24604: WebKit profiler reports incorrect total times

JavaScriptCore:

2009-04-23 Francisco Tolmasky <​[email protected]>

BUG 24604: WebKit profiler reports incorrect total times
<​https://bugs.webkit.org/show_bug.cgi?id=24604>

Reviewed by Timothy Hatcher and Kevin McCullough.

  • JavaScriptCore.exp:
  • JavaScriptCore.xcodeproj/project.pbxproj:
  • profiler/CallIdentifier.h: (JSC::CallIdentifier::Hash::hash): (JSC::CallIdentifier::Hash::equal): (JSC::CallIdentifier::hash): (WTF::):
  • profiler/HeavyProfile.cpp: Removed.
  • profiler/HeavyProfile.h: Removed.
  • profiler/Profile.cpp: No more need for TreeProfile/HeavyProfile (JSC::Profile::create):
  • profiler/Profile.h:
  • profiler/ProfileNode.cpp:
  • profiler/ProfileNode.h:
  • profiler/TreeProfile.cpp: Removed.
  • profiler/TreeProfile.h: Removed.

WebCore:

2009-04-23 Francisco Tolmasky <​[email protected]>

BUG 24604: WebKit profiler reports incorrect total times
<​https://bugs.webkit.org/show_bug.cgi?id=24604>

Reviewed by Timothy Hatcher and Kevin McCullough.

Made it so that most of the profiler functions now match the behavior of Shark. Most notably, in the
heavy view, child nodes now represent the statistics of the root node. Each root node of heavy view
displays flattened statistics for a particular function that ran during the profile, and each child
of these root nodes represents a callpath that lead to it. Thus, the statistics for each of these child
nodes should show how much of the root nodes values came from it. For example, if you had the following to
stacks take place during the profile:

A ->calls 1 times-> B ->calls 2 times-> C
D ->calls 4 times-> C

The tree for the C root node would look like this:

C -> B -> A

-> D

The number of calls values would look like this:

C (6) -> B (2) -> A(2)

-> D (4)

What this means is that "2 of the total 6 C calls came from B", "2 of the total C calls came from A", and
"4 of the total C calls came from D". Notice that the "A ->calls 2 time->" is completely ignored. This becomes
particularly tricky during recursive calls, because each child note can represent multiple possible paths. This
is the reason that we would get things like 40000% previously with recursion.

This is also the way gprof works, and as close as we can get to Shark's behavior (Shark is not instrumented so it
can't know exactly how many calls came from where, etc).

  • English.lproj/localizedStrings.js: Added "Average" for average times in the profile.
  • inspector/JavaScriptProfile.cpp: (WebCore::ProfileClass):
  • inspector/JavaScriptProfileNode.cpp: (WebCore::getParent): (WebCore::getHead): (WebCore::getCallUID): (WebCore::ProfileNodeClass):
  • inspector/front-end/BottomUpProfileDataGridTree.js: Added. (WebInspector.BottomUpProfileDataGridTree): (WebInspector.BottomUpProfileDataGridTree.prototype.focus): (WebInspector.BottomUpProfileDataGridNode): (WebInspector.BottomUpProfileDataGridNode.prototype._takePropertiesFromProfileDataGridNode): (WebInspector.BottomUpProfileDataGridNode.prototype._keepOnlyChild): (WebInspector.BottomUpProfileDataGridNode.prototype._exclude): (WebInspector.BottomUpProfileDataGridNode.prototype._merge): (WebInspector.BottomUpProfileDataGridNode.prototype._populate):
  • inspector/front-end/DataGrid.js: (WebInspector.DataGrid.prototype.insertChild): (WebInspector.DataGrid.prototype.removeChild): (WebInspector.DataGrid.prototype.removeChildren): (WebInspector.DataGridNode.prototype.set hasChildren): (WebInspector.DataGridNode.prototype.get hasChildren):
  • inspector/front-end/ProfileDataGridTree.js: Added. (WebInspector.ProfileDataGridNode): (WebInspector.ProfileDataGridNode.prototype.get data.formatMilliseconds): (WebInspector.ProfileDataGridNode.prototype.get data): (WebInspector.ProfileDataGridNode.prototype.createCell): (WebInspector.ProfileDataGridNode.prototype.select): (WebInspector.ProfileDataGridNode.prototype.deselect): (WebInspector.ProfileDataGridNode.prototype.expand): (WebInspector.ProfileDataGridNode.prototype.insertChild): (WebInspector.ProfileDataGridNode.prototype.removeChild): (WebInspector.ProfileDataGridNode.prototype.removeChildren): (WebInspector.ProfileDataGridNode.prototype.findChild): (WebInspector.ProfileDataGridNode.prototype.get averageTime): (WebInspector.ProfileDataGridNode.prototype.get averagePercent): (WebInspector.ProfileDataGridNode.prototype.get selfPercent): (WebInspector.ProfileDataGridNode.prototype.get totalPercent): (WebInspector.ProfileDataGridNode.prototype._save): (WebInspector.ProfileDataGridNode.prototype._restore): (WebInspector.ProfileDataGridNode.prototype._merge): (WebInspector.ProfileDataGridTree): (WebInspector.ProfileDataGridTree.prototype.get expanded): (WebInspector.ProfileDataGridTree.prototype.appendChild): (WebInspector.ProfileDataGridTree.prototype.insertChild): (WebInspector.ProfileDataGridTree.prototype.removeChildren): (WebInspector.ProfileDataGridTree.prototype.findChild.WebInspector.ProfileDataGridNode.prototype.findChild.sort.WebInspector.ProfileDataGridNode.prototype.sort._save): (WebInspector.ProfileDataGridTree.propertyComparator.comparator): (WebInspector.ProfileDataGridTree.propertyComparator.else.comparator): (WebInspector.ProfileDataGridTree.propertyComparator):
  • inspector/front-end/ProfileView.js: (WebInspector.ProfileView): (WebInspector.ProfileView.prototype.set profile): (WebInspector.ProfileView.prototype.get bottomUpProfileDataGridTree): (WebInspector.ProfileView.prototype.get topDownProfileDataGridTree): (WebInspector.ProfileView.prototype.get currentTree): (WebInspector.ProfileView.prototype.set currentTree): (WebInspector.ProfileView.prototype.get topDownTree): (WebInspector.ProfileView.prototype.get bottomUpTree): (WebInspector.ProfileView.prototype.refresh): (WebInspector.ProfileView.prototype.refreshVisibleData): (WebInspector.ProfileView.prototype.refreshShowAsPercents): (WebInspector.ProfileView.prototype.performSearch.matchesQuery): (WebInspector.ProfileView.prototype.performSearch): (WebInspector.ProfileView.prototype._changeView): (WebInspector.ProfileView.prototype._focusClicked): (WebInspector.ProfileView.prototype._excludeClicked): (WebInspector.ProfileView.prototype._resetClicked): (WebInspector.ProfileView.prototype._sortProfile):
  • inspector/front-end/ProfilesPanel.js: (WebInspector.ProfilesPanel.prototype.showProfile): (WebInspector.ProfilesPanel.prototype.showView): (WebInspector.ProfilesPanel.prototype.searchMatchFound):
  • inspector/front-end/TopDownProfileDataGridTree.js: Added. (WebInspector.TopDownProfileDataGridNode): (WebInspector.TopDownProfileDataGridNode.prototype._populate): (WebInspector.TopDownProfileDataGridNode.prototype._exclude): (WebInspector.TopDownProfileDataGridTree): (WebInspector.TopDownProfileDataGridTree.prototype.focus): (WebInspector.TopDownProfileDataGridTree.prototype.exclude):
  • inspector/front-end/WebKit.qrc:
  • inspector/front-end/inspector.css:
  • inspector/front-end/inspector.html:

LayoutTests:

2009-04-23 Francisco Tolmasky <​[email protected]>

BUG 24604: WebKit profiler reports incorrect total times
<​https://bugs.webkit.org/show_bug.cgi?id=24604>

Reviewed by Timothy Hatcher and Kevin McCullough.

Changed profile.treeProfile to just profile, since these aren't generated in C++ anymore.
Removed heavy-view test since heavy-view isn't an actual tree that is generated in C++ land anymore,
but rather just a different display of the normal treeProfile in the JS data grid.

  • fast/profiler/heavy-view-expected.txt: Removed.
  • fast/profiler/heavy-view.html: Removed.
  • fast/profiler/resources/profiler-test-JS-resources.js: profiles[i].treeProfile -> profiles[i].treeProfile (printProfilesDataWithoutTime):
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj

    r42705 r42808  
    155155                95AB83420DA4322500BC83F3 /* Profiler.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 95AB832E0DA42CAD00BC83F3 /* Profiler.cpp */; };
    156156                95AB83560DA43C3000BC83F3 /* ProfileNode.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 95AB83540DA43B4400BC83F3 /* ProfileNode.cpp */; };
    157                 95CD41B30E1BF6560085358E /* TreeProfile.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 95CD41B10E1BF6560085358E /* TreeProfile.cpp */; };
    158                 95CD41B40E1BF6560085358E /* TreeProfile.h in Headers */ = {isa = PBXBuildFile; fileRef = 95CD41B20E1BF6560085358E /* TreeProfile.h */; };
    159157                95CD45760E1C4FDD0085358E /* ProfileGenerator.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 95CD45740E1C4FDD0085358E /* ProfileGenerator.cpp */; };
    160158                95CD45770E1C4FDD0085358E /* ProfileGenerator.h in Headers */ = {isa = PBXBuildFile; fileRef = 95CD45750E1C4FDD0085358E /* ProfileGenerator.h */; settings = {ATTRIBUTES = (); }; };
    161159                95E3BC050E1AE68200B2D1C1 /* CallIdentifier.h in Headers */ = {isa = PBXBuildFile; fileRef = 95E3BC040E1AE68200B2D1C1 /* CallIdentifier.h */; settings = {ATTRIBUTES = (Private, ); }; };
    162160                95F6E6950E5B5F970091E860 /* JSProfilerPrivate.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 95988BA90E477BEC00D28D4D /* JSProfilerPrivate.cpp */; };
    163                 95FDFA140E22998F0006FB00 /* HeavyProfile.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 95FDFA130E22998F0006FB00 /* HeavyProfile.cpp */; };
    164                 95FDFA160E2299980006FB00 /* HeavyProfile.h in Headers */ = {isa = PBXBuildFile; fileRef = 95FDFA150E2299980006FB00 /* HeavyProfile.h */; };
    165161                960097A60EBABB58007A7297 /* LabelScope.h in Headers */ = {isa = PBXBuildFile; fileRef = 960097A50EBABB58007A7297 /* LabelScope.h */; };
    166162                9688CB150ED12B4E001D649F /* AssemblerBuffer.h in Headers */ = {isa = PBXBuildFile; fileRef = 9688CB130ED12B4E001D649F /* AssemblerBuffer.h */; };
    … …  
    673669                95AB83550DA43B4400BC83F3 /* ProfileNode.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ProfileNode.h; path = profiler/ProfileNode.h; sourceTree = "<group>"; };
    674670                95C18D3E0C90E7EF00E72F73 /* JSRetainPtr.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSRetainPtr.h; sourceTree = "<group>"; };
    675                 95CD41B10E1BF6560085358E /* TreeProfile.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = TreeProfile.cpp; path = profiler/TreeProfile.cpp; sourceTree = "<group>"; };
    676                 95CD41B20E1BF6560085358E /* TreeProfile.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = TreeProfile.h; path = profiler/TreeProfile.h; sourceTree = "<group>"; };
    677671                95CD45740E1C4FDD0085358E /* ProfileGenerator.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = ProfileGenerator.cpp; path = profiler/ProfileGenerator.cpp; sourceTree = "<group>"; };
    678672                95CD45750E1C4FDD0085358E /* ProfileGenerator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ProfileGenerator.h; path = profiler/ProfileGenerator.h; sourceTree = "<group>"; };
    679673                95E3BC040E1AE68200B2D1C1 /* CallIdentifier.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CallIdentifier.h; path = profiler/CallIdentifier.h; sourceTree = "<group>"; };
    680                 95FDFA130E22998F0006FB00 /* HeavyProfile.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = HeavyProfile.cpp; path = profiler/HeavyProfile.cpp; sourceTree = "<group>"; };
    681                 95FDFA150E2299980006FB00 /* HeavyProfile.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = HeavyProfile.h; path = profiler/HeavyProfile.h; sourceTree = "<group>"; };
    682674                960097A50EBABB58007A7297 /* LabelScope.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = LabelScope.h; sourceTree = "<group>"; };
    683675                9688CB130ED12B4E001D649F /* AssemblerBuffer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AssemblerBuffer.h; sourceTree = "<group>"; };
    … …  
    14821474                        children = (
    14831475                                95E3BC040E1AE68200B2D1C1 /* CallIdentifier.h */,
    1484                                 95FDFA130E22998F0006FB00 /* HeavyProfile.cpp */,
    1485                                 95FDFA150E2299980006FB00 /* HeavyProfile.h */,
    14861476                                95742F630DD11F5A000917FB /* Profile.cpp */,
    14871477                                95742F640DD11F5A000917FB /* Profile.h */,
    … …  
    14941484                                1C61516B0EBAC7A00031376F /* ProfilerServer.h */,
    14951485                                1C61516A0EBAC7A00031376F /* ProfilerServer.mm */,
    1496                                 95CD41B10E1BF6560085358E /* TreeProfile.cpp */,
    1497                                 95CD41B20E1BF6560085358E /* TreeProfile.h */,
    14981486                        );
    14991487                        name = profiler;
    … …  
    16341622                                BC18C40D0E16F5CD00B34460 /* HashTable.h in Headers */,
    16351623                                BC18C40E0E16F5CD00B34460 /* HashTraits.h in Headers */,
    1636                                 95FDFA160E2299980006FB00 /* HeavyProfile.h in Headers */,
    16371624                                BC18C40F0E16F5CD00B34460 /* Identifier.h in Headers */,
    16381625                                BC18C4100E16F5CD00B34460 /* InitializeThreading.h in Headers */,
    … …  
    17661753                                BC18C4700E16F5CD00B34460 /* Threading.h in Headers */,
    17671754                                5D53726F0E1C54880021E549 /* Tracing.h in Headers */,
    1768                                 95CD41B40E1BF6560085358E /* TreeProfile.h in Headers */,
    17691755                                6507D29E0E871E5E00D7D896 /* TypeInfo.h in Headers */,
    17701756                                0B4D7E630F319AC800AD7E58 /* TypeTraits.h in Headers */,
    … …  
    21022088                                A782F1A50EEC9FA20036273F /* ExecutableAllocatorPosix.cpp in Sources */,
    21032089                                65DFC93308EA173A00F7300B /* HashTable.cpp in Sources */,
    2104                                 95FDFA140E22998F0006FB00 /* HeavyProfile.cpp in Sources */,
    21052090                                E178636D0D9BEEC300D74E75 /* InitializeThreading.cpp in Sources */,
    21062091                                1429D7D40ED2128200B89619 /* Interpreter.cpp in Sources */,
    … …  
    21452130                                5D6A566B0F05995500266145 /* Threading.cpp in Sources */,
    21462131                                E1EE793D0D6C9B9200FEA3BA /* ThreadingPthreads.cpp in Sources */,
    2147                                 95CD41B30E1BF6560085358E /* TreeProfile.cpp in Sources */,
    21482132                                E1EF79AA0CE97BA60088D500 /* UTF8.cpp in Sources */,
    21492133                                869083150E6518D7000D36ED /* WREC.cpp in Sources */,
Note: See TracChangeset for help on using the changeset viewer.