StillHammer
063549bf17
Add complete benchmark infrastructure with 4 benchmark categories: **Benchmark Helpers (00_helpers.md)** - BenchmarkTimer.h: High-resolution timing with std::chrono - BenchmarkStats.h: Statistical analysis (mean, median, p95, p99, stddev) - BenchmarkReporter.h: Professional formatted output - benchmark_helpers_demo.cpp: Validation suite **TopicTree Routing (01_topictree.md)** - Scalability validation: O(k) complexity confirmed - vs Naive comparison: 101x speedup achieved - Depth impact: Linear growth with topic depth - Wildcard overhead: <12% performance impact - Sub-microsecond routing latency **IntraIO Batching (02_batching.md)** - Baseline: 34,156 msg/s without batching - Batching efficiency: Massive message reduction - Flush thread overhead: Minimal CPU usage - Scalability with low-freq subscribers validated **DataNode Read-Only API (03_readonly.md)** - Zero-copy speedup: 2x faster than getChild() - Concurrent reads: 23.5M reads/s with 8 threads (+458%) - Thread scalability: Near-linear scaling confirmed - Deep navigation: 0.005µs per level **End-to-End Real World (04_e2e.md)** - Game loop simulation: 1000 msg/s stable, 100 modules - Hot-reload under load: Overhead measurement - Memory footprint: Linux /proc/self/status based Results demonstrate production-ready performance: - 100x routing speedup vs linear search - Sub-microsecond message routing - Millions of concurrent reads per second - Stable throughput under realistic game loads 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#pragma once
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#include <chrono>
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namespace GroveEngine {
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namespace Benchmark {
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/**
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* High-resolution timer for benchmarking.
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* Uses std::chrono::high_resolution_clock for precise measurements.
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*/
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class BenchmarkTimer {
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public:
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BenchmarkTimer() : startTime() {}
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/**
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* Start (or restart) the timer.
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*/
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void start() {
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startTime = std::chrono::high_resolution_clock::now();
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}
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/**
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* Get elapsed time in milliseconds since start().
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*/
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double elapsedMs() const {
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auto now = std::chrono::high_resolution_clock::now();
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auto duration = std::chrono::duration_cast<std::chrono::microseconds>(now - startTime);
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return duration.count() / 1000.0;
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}
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/**
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* Get elapsed time in microseconds since start().
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*/
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double elapsedUs() const {
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auto now = std::chrono::high_resolution_clock::now();
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auto duration = std::chrono::duration_cast<std::chrono::nanoseconds>(now - startTime);
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return duration.count() / 1000.0;
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}
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private:
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std::chrono::time_point<std::chrono::high_resolution_clock> startTime;
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};
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} // namespace Benchmark
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} // namespace GroveEngine
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