performance-profiling

Name: performance-profiling
Availability: InStock
Author: timequity

Identify performance bottlenecks in web applications, backend services, and databases.

6|Updated Dec 7, 2025

Search Tags:#performance #optimization #profiling #bottlenecks #measurement

Ready to run

npx skills add https://github.com/timequity/plugins --skill performance-profiling-timequity

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: performance-profiling
Source: https://github.com/timequity/plugins/tree/main/craft-coder/performance-profiling
Command: npx skills add https://github.com/timequity/plugins --skill performance-profiling-timequity

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Guides teams to profile and optimize performance with data-driven steps.

Core Features & Use Cases

Baselines and hotspots identification
Hypothesis-driven minimal optimizations
Tools for Node.js, browser, and databases

Quick Start

Profile a sample app and compare performance before and after an optimization.

Frequently Asked Questions about performance-profiling

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I identify performance bottlenecks in my application?▼

Identify bottlenecks by establishing a measurable baseline of your system's performance, then using profiling tools like Node.js --prof, clinic.js, 0x, browser DevTools Performance, or database EXPLAIN ANALYZE to locate where time and resources are consumed. Compare results against your baseline to pinpoint hotspots.

What profiling tools work with Node.js applications?▼

Node.js applications can be profiled with --prof for CPU flame graphs, clinic.js for diagnosis across CPU and memory, and 0x for real-time visualization. Each tool generates different output formats to help you spot performance issues in backend services.

How do I measure and verify performance improvements?▼

Establish a baseline measurement before optimization, form a hypothesis about the bottleneck, apply minimal targeted changes, then re-measure using the same profiling tool. Compare metrics to confirm the improvement matches your hypothesis and didn't introduce new bottlenecks.

Can I profile database performance, and how?▼

Yes, database performance can be profiled using EXPLAIN ANALYZE to examine query execution plans, identify slow queries, and understand resource consumption. This reveals bottlenecks in database layers of web applications and backend services.

What's the difference between profiling web applications and backend services?▼

Web applications use browser DevTools Performance and Lighthouse for client-side profiling, while backend services use Node.js profiling tools and database EXPLAIN ANALYZE. Both workflows follow the same measurement-identify-optimize-verify discipline, applied to their respective layers.

Do I need access to profiling tools before I start optimizing?▼

Yes, profiling tools are required to measure baselines and identify bottlenecks accurately. Without tools like clinic.js, DevTools, or EXPLAIN ANALYZE, you risk optimizing the wrong code and missing actual performance gains.