Pattern-Driven Software DiagnosticsPattern-Driven Software Diagnostics . Dmitry Vostokov . Memory...
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Pattern-Driven Software Diagnostics Dmitry Vostokov Memory Dump Analysis Services Version 1.0
Transcript of Pattern-Driven Software DiagnosticsPattern-Driven Software Diagnostics . Dmitry Vostokov . Memory...
Pattern-Driven Software Diagnostics
Dmitry Vostokov Memory Dump Analysis Services
Version 1.0
Prerequisites Interest in software diagnostics
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Why? No comprehensive systematic study of
software diagnostics
Ad hoc services
Traditionally associated with troubleshooting and debugging
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Goals Scientific: a comprehensive
methodology
Technological: limits and services
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Diagnostics Based on pattern recognition:
symptoms and signs
Systems approach
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Software Diagnostics Based on pattern recognition:
symptoms and signs
Systems approach
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Symptoms User or system complaints Error message Slow system High CPU usage
Histories
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Signs Traditional artifact patterns Situation dependent: memory or
handle leak Specific vs. non-specific: spike, leak
vs. access violation
Pattern Groupings Syndromes
Pattern Interaction
Pattern Succession
Problem Solving Diagnosis treatment Software problem
Diagnosis resolution
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Problem Solving
Workaround Patterns
Unified Debugging Patterns
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Diagnostics Process
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Diagnostic encounter Treatment
Monitoring
Postmortem
Checklists
Artifact Checklists
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Memory Dump Analysis
Software Trace Analysis
Artifact Baselines
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Memory Dumps: Reference Stack
Traces Software Logs: Master Traces
Diagnosing Current State Multiple OS Multiple Platforms Multiple Products Multiple Artifacts Multiple Tools
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Pattern Language Structural and behavioural patterns
(S,B)-systems Antipatterns
Example: Inquisitor Pattern Explanations
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Pattern Catalog Problem Description Analysis
UI Problem Analysis
Memory Dump Analysis
Software Trace Analysis
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Meta-patterns Patterns of Software Diagnostics
First Fault Multiple Patterns NULL Case NULL Diagnosis Second Opinion Dominant Subsystem Noise
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Pattern Isomorphism Multiple Exceptions Windows Mac OS X
Spiking Thread
Windows Mac OS X / Linux
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Performance Monitoring Trace Patterns: Counter Value Global Monotonicity Constant Value
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Monitoring Best Practices Example: artifact collection Software Tracing Best Practices
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Certification Individual
Memory Dump Analysis Software Trace Analysis (forthcoming) Corporate
Software Diagnostics Maturity
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Diagnostics Audit Catalog of Diagnostic Errors Audit Service from MDAS Checklists for checklists Diagnostics for diagnostics
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Human Side
Diagnostic load
Tiredness reduced efficiency
Shallow vs. deep diagnostics
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Is Automation Possible?
Growth of data Growth of complexity Impossibility of complete automation Only computer-assisted diagnostics
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Systems and Diagnostics General Software Diagnostics Theory
Introduction to Systemic Software Diagnostics
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Malware Analysis Malware + Victimware
Victimware: The Missing Part of the Equation
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Further Reading Diagnostics
Diagnosis: Philosophical and Medical Perspectives (by Agassi & Laor)
Software Diagnostics
Software Diagnostics Institute Memory Dump Analysis Anthology: Volumes 1, 2, 3, 4, 5, 6, 7, … Volume 6 is in preparation (June, 2012) Volume 7 is planned for the end of 2012 Software Trace and Memory Dump Analysis: Patterns, Tools, Processes and
Best Practices Introduction to Pattern-Driven Software Problem Solving Cloud Memory Dump Analysis Fundamentals of Complete Crash and Hang Memory Dump Analysis Introduction to Software Narratology
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Q&A
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Thank you for attendance!
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