Memory

Skill v0idOS/performance-deity/skills/memory

A ruthlessly strict algorithmic optimization methodology for AI coding agents. Forces your agent to profile, benchmark, and mathematically prove performance gains before writing code.

Install

npx -y skills add v0idOS/performance-deity --skill memory

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Detect and fix memory leaks. Instruments memory tracking across thousands of iterations, proves the leak with growth data, identifies the uncollected reference, and verifies the fix.

SKILL.md

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Execute all four phases in order.

Phase 1 — Isolation

Identify the code suspected of leaking.
Write a wrapper that runs it in an infinite loop or for ≥1,000,000 iterations.

Phase 2 — Instrumentation

Inject memory tracking into the wrapper:

Node.js: process.memoryUsage().heapUsed before and after each iteration.
Python: tracemalloc.start() / tracemalloc.get_traced_memory().
PowerShell: [System.GC]::GetTotalMemory($false).

If memory continuously grows without recovering after GC, the leak is confirmed. Show the growth numerically:

Iteration      0:  10 MB
Iteration 100k:  14 MB
Iteration 500k:  40 MB

Phase 3 — Fix

Identify the uncollected reference:

Event listeners not removed from detached DOM nodes
Global arrays or caches growing without a size limit
Closures retaining large outer-scope objects

Apply the fix:

removeEventListener for DOM event listeners
WeakMap / WeakRef for object-keyed associations that should not prevent GC
Object pooling to reuse memory instead of allocating new objects per cycle

Phase 4 — Report

Re-run the instrumented wrapper and present:

Metric	Before	After
Memory growth per 10k ops	+50MB	+0MB
GC pause frequency	High	Stable

Explain the root cause and the specific reference that was being retained.