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Created October 28, 2024 05:29
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inferno: needed basics
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inferno-learning.xml
<?xml version="1.0" encoding="UTF-8"?>
<learning_hierarchy>
<metadata>
<title>Learning Path for Inferno Contribution</title>
<description>Comprehensive learning hierarchy for contributing to Inferno, a Rust-based flamegraph generation toolkit</description>
<target_audience>Beginners in Performance Analysis and Rust</target_audience>
</metadata>
<learning_path>
<phase order="1" name="performance_analysis_fundamentals">
<topic name="Profiling Basics">
<concepts>
<concept name="CPU Profiling">
<subtopic>Sampling vs Tracing</subtopic>
<subtopic>Call Stack Collection</subtopic>
<subtopic>Performance Counters</subtopic>
<deep_concepts>
<item>CPU Time Measurement</item>
<item>Hardware Performance Monitoring</item>
<item>Profiling Overhead</item>
</deep_concepts>
</concept>
<concept name="Stack Traces">
<subtopic>Stack Unwinding</subtopic>
<subtopic>Frame Pointers</subtopic>
<subtopic>Symbol Resolution</subtopic>
<deep_concepts>
<item>Debug Information Formats</item>
<item>DWARF Debugging Standard</item>
<item>Stack Memory Layout</item>
</deep_concepts>
</concept>
</concepts>
<resources>
<resource>Systems Performance (Brendan Gregg)</resource>
<resource>CPU Flame Graphs Documentation</resource>
</resources>
</topic>
<topic name="Profiling Tools">
<concepts>
<concept name="Linux Tools">
<subtopic>perf Events</subtopic>
<subtopic>BPF/eBPF</subtopic>
<subtopic>Linux Performance</subtopic>
<deep_concepts>
<item>Kernel Instrumentation</item>
<item>System Call Tracing</item>
<item>Hardware Event Sampling</item>
</deep_concepts>
</concept>
<concept name="DTrace">
<subtopic>DTrace Probes</subtopic>
<subtopic>D Language</subtopic>
<subtopic>Provider Interfaces</subtopic>
<deep_concepts>
<item>Dynamic Tracing</item>
<item>Probe Points</item>
<item>Action Statements</item>
</deep_concepts>
</concept>
</concepts>
</topic>
</phase>
<phase order="2" name="rust_programming">
<topic name="Basic Rust">
<concepts>
<concept name="Memory Management">
<subtopic>Ownership Model</subtopic>
<subtopic>Borrowing Rules</subtopic>
<subtopic>Lifetimes</subtopic>
<deep_concepts>
<item>Stack vs Heap</item>
<item>Move Semantics</item>
<item>Reference Safety</item>
</deep_concepts>
</concept>
<concept name="Performance Features">
<subtopic>Zero-cost Abstractions</subtopic>
<subtopic>SIMD Operations</subtopic>
<subtopic>Memory Layout Control</subtopic>
<deep_concepts>
<item>Compiler Optimizations</item>
<item>CPU Architecture Specifics</item>
<item>Cache Efficiency</item>
</deep_concepts>
</concept>
</concepts>
</topic>
<topic name="Advanced Rust">
<concepts>
<concept name="Parallel Processing">
<subtopic>Threading Model</subtopic>
<subtopic>Synchronization Primitives</subtopic>
<subtopic>Work Distribution</subtopic>
<deep_concepts>
<item>Thread Safety</item>
<item>Lock-free Algorithms</item>
<item>Work Stealing</item>
</deep_concepts>
</concept>
<concept name="File Processing">
<subtopic>File I/O</subtopic>
<subtopic>Text Processing</subtopic>
<subtopic>Parsing Techniques</subtopic>
<deep_concepts>
<item>Buffer Management</item>
<item>Unicode Handling</item>
<item>Stream Processing</item>
</deep_concepts>
</concept>
</concepts>
</topic>
</phase>
<phase order="3" name="visualization_concepts">
<topic name="Flame Graphs">
<concepts>
<concept name="Graph Theory">
<subtopic>Tree Structures</subtopic>
<subtopic>Graph Layouts</subtopic>
<subtopic>Path Analysis</subtopic>
<deep_concepts>
<item>Tree Traversal</item>
<item>Node Relationships</item>
<item>Graph Algorithms</item>
</deep_concepts>
</concept>
<concept name="SVG Generation">
<subtopic>SVG Elements</subtopic>
<subtopic>Coordinate Systems</subtopic>
<subtopic>Style Properties</subtopic>
<deep_concepts>
<item>Vector Graphics</item>
<item>Path Drawing</item>
<item>Text Rendering</item>
</deep_concepts>
</concept>
</concepts>
</topic>
</phase>
<phase order="4" name="inferno_specific">
<topic name="Architecture">
<concepts>
<concept name="Stack Processing">
<subtopic>Stack Collapsing</subtopic>
<subtopic>Format Parsing</subtopic>
<subtopic>Data Transformation</subtopic>
<deep_concepts>
<item>Parser Implementation</item>
<item>Memory Efficiency</item>
<item>Error Handling</item>
</deep_concepts>
</concept>
<concept name="Visualization Engine">
<subtopic>Color Mapping</subtopic>
<subtopic>Layout Algorithm</subtopic>
<subtopic>SVG Construction</subtopic>
<deep_concepts>
<item>Stack Merging</item>
<item>Frame Width Calculation</item>
<item>Label Placement</item>
</deep_concepts>
</concept>
</concepts>
</topic>
<topic name="Performance Optimization">
<concepts>
<concept name="Benchmarking">
<subtopic>Criterion Framework</subtopic>
<subtopic>Performance Metrics</subtopic>
<subtopic>Comparison Tools</subtopic>
<deep_concepts>
<item>Benchmark Design</item>
<item>Statistical Analysis</item>
<item>Regression Detection</item>
</deep_concepts>
</concept>
<concept name="Optimization Techniques">
<subtopic>Memory Usage</subtopic>
<subtopic>Algorithm Efficiency</subtopic>
<subtopic>Parallel Processing</subtopic>
<deep_concepts>
<item>Cache Optimization</item>
<item>Memory Allocation</item>
<item>Thread Synchronization</item>
</deep_concepts>
</concept>
</concepts>
</topic>
</phase>
</learning_path>
<recommendations>
<recommendation>Start with understanding basic profiling concepts before diving into implementation</recommendation>
<recommendation>Learn to use perf and DTrace tools practically before working on their parsers</recommendation>
<recommendation>Focus on Rust performance features and parallel processing capabilities</recommendation>
<recommendation>Study existing flame graph implementations to understand design decisions</recommendation>
<recommendation>Practice with the criterion benchmarking framework to understand performance implications</recommendation>
<recommendation>Begin with small contributions to the parsing logic before tackling visualization components</recommendation>
</recommendations>
</learning_hierarchy>
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