Babysitter performance-profiler

Profile application performance including CPU, memory, and flame graph generation

install

source · Clone the upstream repo

git clone https://github.com/a5c-ai/babysitter

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/a5c-ai/babysitter "$T" && mkdir -p ~/.claude/skills && cp -r "$T/library/specializations/software-architecture/skills/performance-profiler" ~/.claude/skills/a5c-ai-babysitter-performance-profiler && rm -rf "$T"

manifest: library/specializations/software-architecture/skills/performance-profiler/SKILL.md

Performance Profiler Skill

Overview

Profiles application performance including CPU profiling, memory profiling, flame graph generation, bottleneck identification, and APM tool integration.

Capabilities

CPU profiling
Memory profiling and heap snapshots
Flame graph generation
Bottleneck identification
Hot path analysis
Integration with APM tools (DataDog, New Relic)
Event loop analysis (Node.js)
Garbage collection analysis

Target Processes

performance-optimization

Input Schema

{
  "type": "object",
  "required": ["target"],
  "properties": {
    "target": {
      "type": "string",
      "description": "Target process, script, or endpoint"
    },
    "mode": {
      "type": "string",
      "enum": ["cpu", "memory", "heap", "all"],
      "default": "cpu"
    },
    "duration": {
      "type": "number",
      "default": 30,
      "description": "Profiling duration in seconds"
    },
    "options": {
      "type": "object",
      "properties": {
        "samplingInterval": {
          "type": "number",
          "default": 1000,
          "description": "Sampling interval in microseconds"
        },
        "generateFlameGraph": {
          "type": "boolean",
          "default": true
        },
        "outputFormat": {
          "type": "string",
          "enum": ["json", "html", "svg"],
          "default": "html"
        }
      }
    }
  }
}

Output Schema

{
  "type": "object",
  "properties": {
    "profile": {
      "type": "object",
      "properties": {
        "duration": { "type": "number" },
        "samples": { "type": "number" }
      }
    },
    "hotspots": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "function": { "type": "string" },
          "selfTime": { "type": "number" },
          "totalTime": { "type": "number" },
          "percentage": { "type": "number" }
        }
      }
    },
    "flameGraphPath": {
      "type": "string"
    },
    "memoryStats": {
      "type": "object",
      "properties": {
        "heapUsed": { "type": "number" },
        "heapTotal": { "type": "number" },
        "external": { "type": "number" }
      }
    },
    "recommendations": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}

Usage Example

{
  kind: 'skill',
  skill: {
    name: 'performance-profiler',
    context: {
      target: 'npm run start',
      mode: 'cpu',
      duration: 30,
      options: {
        generateFlameGraph: true,
        outputFormat: 'html'
      }
    }
  }
}