Graphing tools for scheduler tracing

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Identifiers

10.5446/61954 (DOI)

Publisher

FOSDEM VZW

Release Date

2023

Language

English

Content Metadata

Subject Area

Computer Science

Genre

Conference/Talk

Abstract

Understanding scheduler behavior can be important for understanding application performance. In this talk, we present some tools that we have developed to help understand scheduling behavior on highly multicore machines. The tools to be presented enable 1) obtaining a graph showing what tasks are running on what cores, with a variety of coloring schemes, 2) detecting overload situations, and 3) stepping through a recorded execution. All tools rely on traces collected using trace-cmd. The tools make it possible to get an overview of the execution, as well as to study specific execution intervals.

Speech

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00:00

Fatou-MengeScheduling (computing)Kernel (computing)Chemical equationTask (computing)Core dumpDecision theoryTerm (mathematics)Virtual machineConservation lawAxiom of choiceNetwork socketRead-only memoryJava appletLink (knot theory)BefehlsprozessorGraph (mathematics)Line (geometry)Scheduling (computing)Tracing (software)Graph theoryFile formatMultiplication signQueue (abstract data type)Core dumpBitNetwork socketElectronic visual displayVirtual machineGreatest elementAxiom of choiceDebuggerKernel (computing)Data storage deviceDifferent (Kate Ryan album)Shared memoryoutputCartesian coordinate systemInformationGraphical user interfaceMoment (mathematics)Software testing1 (number)QuicksortTask (computing)Diallyl disulfideInheritance (object-oriented programming)Focus (optics)MereologyComputer fileDecision theoryConservation law2 (number)International Date LineCuboidEvent horizonVector potentialFunction (mathematics)Graph (mathematics)DiagramComputer animation

07:29

Fatou-MengeSynchronizationCore dumpKernel (computing)AerodynamicsBenchmarkFocus (optics)Parallel portNetwork-attached storageSuite (music)SupercomputerComputer programPolygon meshAdaptive behaviorRead-only memoryTask (computing)IntelNetwork socketRun time (program lifecycle phase)Line (geometry)Law of large numbersNetwork socketBenchmarkVirtual machineCore dumpConservation lawKernel (computing)MereologyTask (computing)View (database)2 (number)Cartesian coordinate systemPoint (geometry)Maxima and minimaLine (geometry)Multiplication signBitVertex (graph theory)Graph coloringComputer configurationBounded variationGraph theoryLevel (video gaming)NumberSynchronizationDemonGraph (mathematics)LastteilungPatch (Unix)Parallel portGraph (mathematics)Information overloadStructural loadSocket-SchnittstelleCASE <Informatik>Position operatorHuman migrationMoment (mathematics)Overhead (computing)SpacetimeAxiom of choiceAreaScheduling (computing)Computer animationDiagram

16:12

Information overloadNetwork socketCore dumpConservation lawScheduling (computing)Kernel (computing)SynchronizationPatch (Unix)Suite (music)BenchmarkJava appletWechselseitige InformationGroup actionDifferent (Kate Ryan album)InformationPerspective (visual)MultiplicationGraph (mathematics)Computer configurationTask (computing)BitProbability density functionScheduling (computing)Task (computing)Information overloadGraph (mathematics)Cache (computing)Multiplication signImplementationState of matterOperator (mathematics)Graph theoryEvent horizonFrequencyCoprocessorTracing (software)CausalityGraph coloringLetterpress printingCASE <Informatik>Socket-SchnittstelleDecision theoryStructural loadCore dumpInformationNetwork socketAverageMereologyComputer programmingNumberKernel (computing)Patch (Unix)BenchmarkGoodness of fitJava appletCartesian coordinate system2 (number)Point (geometry)Suite (music)Bit rateMathematicsBefehlsprozessorDifferent (Kate Ryan album)Thread (computing)Line (geometry)SpacetimeKey (cryptography)Inheritance (object-oriented programming)Computer animation

24:55

Scheduling (computing)Perspective (visual)InformationDifferent (Kate Ryan album)MultiplicationCore dumpComputer configurationGraph (mathematics)Group actionTask (computing)MultilaterationComputer animationProgram flowchart

Transcript: English(auto-generated)