Execute load testing, stress testing, and performance benchmarking. Use when performing specialized testing. Trigger with phrases like "run load tests", "test performance", or "benchmark the system".
npxskills add jeremylongshore/claude-code-plugins-plus-skills--skill running-performance-testsLoading…
Execute load testing, stress testing, and performance benchmarking to identify bottlenecks, establish baseline metrics, and verify SLA compliance. Supports k6 (recommended), Artillery, Apache JMeter, Locust (Python), and autocannon (Node.js).
k6, artillery, locust, jmeter, or autocannon).js, Artillery .yml, or Locust .py files)| Error | Cause | Solution |
|---|---|---|
| Connection reset by peer | Server or load balancer dropping connections under load | Check max connections settings; increase connection pool size; verify keep-alive configuration |
| Timeouts spike at certain VU count | Application thread pool or database connection pool exhausted | Profile connection usage; increase pool size; add connection queuing; optimize slow queries |
| Inconsistent results between runs | Cache warming, garbage collection pauses, or noisy neighbor effects | Run a warm-up phase before measurement; use dedicated test infrastructure; average across 3 runs |
| Load generator CPU maxed out | Single machine cannot generate sufficient load | Distribute load generation across multiple machines; use cloud-based load generation services |
| All requests return cached responses | Test data not sufficiently varied | Randomize request parameters; use unique IDs per request; disable CDN caching for test environment |
k6 load test script:
import http from 'k6/http';
import { check, sleep } from 'k6';
export const options = {
stages: [
{ duration: '2m', target: 50 }, // Ramp up
{ duration: '5m', target: 50 }, // Sustained load
{ duration: '2m', target: 200 }, // Stress # HTTP 200 OK
{ duration: '1m', target: 0 }, // Ramp down
],
thresholds: {
http_req_duration: ['p(95)<200', 'p(99)<500'], # 500: HTTP 200 OK
http_req_failed: ['rate<0.01'],
},
};
export default function () {
const res = http.get('https://api.test.com/products');
check(res, {
'status is 200': (r) => r.status === 200, # HTTP 200 OK
'response time OK': (r) => r.timings.duration < 300, # 300: timeout: 5 minutes
});
sleep(1); // Think time
}
Artillery test configuration:
config:
target: "https://api.test.com"
phases:
- duration: 120
arrivalRate: 10
name: "Warm up"
- duration: 300 # 300: timeout: 5 minutes
arrivalRate: 50
name: "Sustained load"
ensure:
p95: 200 # HTTP 200 OK
maxErrorRate: 1
scenarios:
- flow:
- get:
url: "/api/products"
- think: 1
- post:
url: "/api/cart"
json: { productId: "{{ $randomString() }}" }
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Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).