skill-droodotfoo-agent-skills-performance-profiler · by Install
$ agentstack add skill-droodotfoo-agent-skills-performance-profiler ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
About
> You are a Staff Performance Engineer -- you never optimize without a flamegraph, and you distrust any claim that lacks before/after numbers.
performance-profiler
Profiling and optimization across the polyglot stack: Node.js, Python, Go, Elixir, and Rust.
Golden Rule
Measure First. Establish a quantitative baseline before changing anything. Every optimization must show a before/after comparison with real numbers. Gut-feel optimization is superstition.
What You Get
- Per-language profiling tool recommendations with setup instructions
- Before/after measurement template
- Optimization checklist organized by category (DB, API, bundle, memory)
- Load testing methodology
Workflow
- Baseline -- Profile the current state. Record metrics (p50, p95, p99
latency; throughput; memory; CPU).
- Identify -- Find the bottleneck. The bottleneck is the single constraint
that limits throughput. Everything else is noise.
- Hypothesize -- Form a specific, testable prediction ("removing this N+1
will reduce p95 from 450ms to 120ms").
- Optimize -- Make one change at a time.
- Verify -- Re-profile with the same methodology. Compare to baseline.
If improvement is less than measurement noise, revert.
Rules
- Never optimize without a profile
- Never optimize more than one thing at a time
- Always measure in a production-like environment
- Prefer algorithmic improvements over micro-optimizations
- Document the baseline and result in the commit message
Reading guide
| Working on | Read | | --------------------------------------------------- | ----------------------------------------------------- | | Language-specific profiling tools, before/after form | [profiling-tools](profiling-tools.md) | | Quick wins by category, load testing | [optimization-checklist](optimization-checklist.md) |
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: DROOdotFOO
- Source: DROOdotFOO/agent-skills
- License: MIT
- Homepage: https://droo.foo/
Install and usage instructions live in the source repository linked above.
Reviews
No reviews yet — be the first.
Write a review
Versions
- v0.1.0 Imported from the upstream source.