Ora che capisci i fondamenti dei test di k6 e delle prestazioni, è tempo di mettere in pratica queste conoscenze. Questo articolo ti accompagna attraverso la scrittura di test reali, l'integrazione in condotte CI/CD e l'utilizzo di strumenti di profilazione per identificare e risolvere le strozzature delle prestazioni.
Questo e' Parte 2 di una serie in due parti su prove di carico con k6:
Se non avete letto la Parte 1, iniziate a capire le basi di k6, l'installazione e i tipi di test prima di immergervi nell'implementazione.
Prima di eseguire i test k6, impostare MinimalBlog per i test:
Utilizzando il progetto demo:
cd Mostlylucid.MinimalBlog.Demo
dotnet run
O usando Docker:
docker run -d -p 5000:8080 \
-v $(pwd)/Markdown:/app/Markdown \
--name minimalblog-test \
scottgal/minimalblog:latest
Per un'accurata prova delle prestazioni, Crea sempre in modalità Release:
dotnet run --configuration Release
Differenze nella modalità Debug vs Release:
| Aspetto | Modalità di debug | Modalità di rilascio |
|---|---|---|
| Ottimizzazioni | Disabled | Full JIT optimizations enabled |
| InlineingCity name (optional, probably does not need a translation) | Minimale | Metodo aggressivo di rivestimento |
| Codice morto | Preservato | Eliminato |
| Simboli di debug | PDB completo, metadati aggiuntivi | Minimale o nessuno |
| Asserzioni | Debug.Assert() active |
Compiled out |
| Controllo dei limiti | Controlli di sicurezza supplementari | Ottimizzato lontano dove sicuro |
| Spese generali tipiche | 2-10x più lento | Prestazioni al basale |
Perché la modalità Debug dà risultati fuorvianti:
Debug.Assert() istruzioni eseguite, aggiungendo controlli che la produzione non avràQuando usare la modalità Debug per il test:
Flusso di lavoro raccomandato:
# 1. Develop and debug with Debug mode
dotnet run # Debug mode (default)
# 2. Validate functionality works
k6 run --vus 1 --duration 10s smoke-test.js
# 3. Switch to Release for actual performance testing
dotnet run -c Release
# 4. Run full load tests
k6 run load-test.js
Regola del pollice: Se stai misurando le prestazioni, usa Release. Se stai correggendo i bug, usa Debug.
Crea diversi post markdown con cui testare:
# Create test posts directory
mkdir -p TestMarkdown
# Create sample posts
for i in {1..10}; do
cat > TestMarkdown/test-post-$i.md <<EOF
# Test Post $i
This is test post number $i with some **bold** text and *italic* text.
## Sample Content
- Item 1
- Item 2
- Item 3
\`\`\`csharp
public class Test {
public int Value { get; set; }
}
\`\`\`
EOF
done
mkdir k6-tests
cd k6-tests
Ora siamo pronti a scrivere i nostri test!
Iniziamo con un semplice test del fumo per verificare la funzionalità di base:
File: smoke-test.js
import http from 'k6/http';
import { check, sleep } from 'k6';
export const options = {
vus: 1,
duration: '30s',
thresholds: {
http_req_duration: ['p(95)<500'], // 95% of requests should be below 500ms
http_req_failed: ['rate<0.01'], // Less than 1% errors
},
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
export default function() {
// Test homepage
let response = http.get(`${BASE_URL}/`);
check(response, {
'homepage status is 200': (r) => r.status === 200,
'homepage has content': (r) => r.body.length > 0,
'homepage response time OK': (r) => r.timings.duration < 500,
});
sleep(1);
// Test a single post
response = http.get(`${BASE_URL}/post/test-post-1`);
check(response, {
'post status is 200': (r) => r.status === 200,
'post has content': (r) => r.body.length > 0,
'post contains title': (r) => r.body.includes('Test Post 1'),
});
sleep(1);
// Test categories page
response = http.get(`${BASE_URL}/categories`);
check(response, {
'categories status is 200': (r) => r.status === 200,
'categories has content': (r) => r.body.length > 0,
});
sleep(1);
// Test category filter
response = http.get(`${BASE_URL}/category/Testing`);
check(response, {
'category filter status is 200': (r) => r.status === 200,
'category has posts': (r) => r.body.includes('Test Post'),
});
}
Eseguire il test:
k6 run smoke-test.js
Uscita prevista:
✓ homepage status is 200
✓ homepage has content
✓ homepage response time OK
✓ post status is 200
✓ post has content
✓ post contains title
✓ categories status is 200
✓ categories has content
✓ category filter status is 200
✓ category has posts
checks.........................: 100.00% ✓ 300 ✗ 0
data_received..................: 1.2 MB 40 kB/s
data_sent......................: 15 kB 500 B/s
http_req_duration..............: avg=45ms min=12ms med=38ms max=156ms p(95)=98ms
http_reqs......................: 120 4/s
Le prestazioni di MinimalBlog dipendono in larga misura dalla cache. Verifichiamo che funzioni:
File: cache-test.js
import http from 'k6/http';
import { check, group } from 'k6';
export const options = {
vus: 1,
iterations: 10,
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
export default function() {
group('Memory Cache Test - First Request', () => {
const start = Date.now();
const response = http.get(`${BASE_URL}/post/test-post-1`);
const duration = Date.now() - start;
check(response, {
'first request successful': (r) => r.status === 200,
});
console.log(`First request: ${duration}ms`);
});
group('Memory Cache Test - Cached Request', () => {
const start = Date.now();
const response = http.get(`${BASE_URL}/post/test-post-1`);
const duration = Date.now() - start;
check(response, {
'cached request successful': (r) => r.status === 200,
'cached request is faster': (r) => r.timings.duration < 100,
});
console.log(`Cached request: ${duration}ms`);
});
group('Output Cache Headers', () => {
const response = http.get(`${BASE_URL}/post/test-post-1`);
check(response, {
'has cache headers': (r) => r.headers['Cache-Control'] !== undefined,
'output cache working': (r) => {
const age = r.headers['Age'];
return age !== undefined && parseInt(age) >= 0;
},
});
console.log(`Cache-Control: ${response.headers['Cache-Control']}`);
console.log(`Age: ${response.headers['Age']}`);
});
}
Eseguire il test:
k6 run cache-test.js
Questo test vi mostrerà:
Ora proviamo sotto carico realistico:
File: load-test.js
import http from 'k6/http';
import { check, sleep } from 'k6';
import { Rate } from 'k6/metrics';
// Custom metrics
const errorRate = new Rate('errors');
export const options = {
stages: [
{ duration: '2m', target: 10 }, // Ramp up to 10 users
{ duration: '5m', target: 10 }, // Stay at 10 users
{ duration: '2m', target: 0 }, // Ramp down to 0
],
thresholds: {
http_req_duration: ['p(95)<300'], // 95% under 300ms
http_req_failed: ['rate<0.01'], // Less than 1% errors
errors: ['rate<0.1'], // Less than 10% errors
},
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
const scenarios = [
{ weight: 50, path: '/' }, // 50% homepage
{ weight: 30, path: '/post/test-post-1' }, // 30% specific post
{ weight: 10, path: '/categories' }, // 10% categories
{ weight: 10, path: '/category/Testing' }, // 10% category filter
];
function weightedChoice(scenarios) {
const total = scenarios.reduce((sum, s) => sum + s.weight, 0);
let random = Math.random() * total;
for (const scenario of scenarios) {
random -= scenario.weight;
if (random <= 0) return scenario;
}
return scenarios[0];
}
export default function() {
const scenario = weightedChoice(scenarios);
const response = http.get(`${BASE_URL}${scenario.path}`);
const success = check(response, {
'status is 200': (r) => r.status === 200,
'response time OK': (r) => r.timings.duration < 500,
'has content': (r) => r.body.length > 0,
});
errorRate.add(!success);
sleep(Math.random() * 2 + 1); // Random sleep 1-3 seconds
}
Eseguire il test:
k6 run load-test.js
Interpretazione dei risultati:
scenarios: (100.00%) 1 scenario, 10 max VUs, 9m30s max duration
default: 2m00s ramp-up, 5m00s plateau, 2m00s ramp-down
✓ status is 200
✓ response time OK
✓ has content
checks.........................: 100.00% ✓ 3450 ✗ 0
data_received..................: 12 MB 22 kB/s
data_sent......................: 132 kB 244 B/s
errors.........................: 0.00% ✓ 0 ✗ 1150
http_req_duration..............: avg=42ms min=8ms med=35ms max=245ms p(95)=86ms p(99)=156ms
http_reqs......................: 1150 2.12/s
iteration_duration.............: avg=2.1s min=1.0s med=2.0s max=3.4s
vus............................: 10 min=0 max=10
Le metriche chiave da guardare:
Troviamo il punto di rottura di MinimalBlog:
File: stress-test.js
import http from 'k6/http';
import { check, sleep } from 'k6';
export const options = {
stages: [
{ duration: '2m', target: 10 }, // Normal load
{ duration: '2m', target: 50 }, // Increase to 50
{ duration: '2m', target: 100 }, // Stress at 100
{ duration: '2m', target: 200 }, // High stress at 200
{ duration: '3m', target: 0 }, // Recovery
],
thresholds: {
http_req_duration: ['p(99)<3000'], // 99% under 3s even under stress
},
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
export default function() {
const responses = http.batch([
['GET', `${BASE_URL}/`],
['GET', `${BASE_URL}/post/test-post-1`],
['GET', `${BASE_URL}/post/test-post-2`],
['GET', `${BASE_URL}/categories`],
]);
responses.forEach((response, index) => {
check(response, {
[`request ${index} status is 200`]: (r) => r.status === 200,
});
});
sleep(0.5);
}
export function handleSummary(data) {
return {
'stress-test-summary.json': JSON.stringify(data),
stdout: textSummary(data, { indent: ' ', enableColors: true }),
};
}
Eseguire il test:
k6 run stress-test.js
Guarda per:
Prova picchi di traffico improvvisi (come essere presenti su Reddit o Hacker News):
File: spike-test.js
import http from 'k6/http';
import { check } from 'k6';
export const options = {
stages: [
{ duration: '1m', target: 10 }, // Normal traffic
{ duration: '30s', target: 200 }, // Sudden spike!
{ duration: '3m', target: 200 }, // Sustained spike
{ duration: '1m', target: 10 }, // Back to normal
{ duration: '1m', target: 0 }, // Ramp down
],
thresholds: {
http_req_duration: ['p(95)<1000'], // Allow higher latency during spike
http_req_failed: ['rate<0.05'], // Allow 5% errors during spike
},
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
export default function() {
const response = http.get(`${BASE_URL}/`);
check(response, {
'status is 200 or 503': (r) => r.status === 200 || r.status === 503,
});
}
Eseguire il test:
k6 run spike-test.js
Questa prova verifica:
Prova a lungo termine per rilevare perdite di memoria o esaurimento delle risorse:
File: soak-test.js
import http from 'k6/http';
import { check, sleep } from 'k6';
export const options = {
stages: [
{ duration: '2m', target: 20 }, // Ramp up
{ duration: '3h', target: 20 }, // Stay at 20 for 3 hours
{ duration: '2m', target: 0 }, // Ramp down
],
thresholds: {
http_req_duration: ['p(95)<500'],
http_req_failed: ['rate<0.01'],
},
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
export default function() {
const response = http.get(`${BASE_URL}/post/test-post-${Math.floor(Math.random() * 10) + 1}`);
check(response, {
'status is 200': (r) => r.status === 200,
'response time stable': (r) => r.timings.duration < 500,
});
sleep(2);
}
Eseguire il test:
k6 run soak-test.js
Importante: Monitorare le risorse del sistema durante i test di immersione:
# In another terminal
watch -n 5 'dotnet-counters ps | grep -i minimal'
# Or use top/htop
htop -p $(pgrep -f MinimalBlog)
Guarda per:
Simula il comportamento effettivo dell'utente:
File: user-journey-test.js
import http from 'k6/http';
import { check, group, sleep } from 'k6';
import { htmlReport } from 'https://raw.githubusercontent.com/benc-uk/k6-reporter/main/dist/bundle.js';
export const options = {
vus: 10,
duration: '5m',
thresholds: {
'group_duration{group:::01_homepage}': ['avg<500'],
'group_duration{group:::02_browse_posts}': ['avg<500'],
'group_duration{group:::03_categories}': ['avg<500'],
},
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
export default function() {
// Simulate a real user journey
group('01_homepage', () => {
const response = http.get(`${BASE_URL}/`);
check(response, {
'homepage loaded': (r) => r.status === 200,
'homepage has posts': (r) => r.body.includes('Test Post'),
});
sleep(Math.random() * 3 + 2); // Read homepage 2-5 seconds
});
group('02_browse_posts', () => {
// User clicks on a post
let response = http.get(`${BASE_URL}/post/test-post-1`);
check(response, {
'post loaded': (r) => r.status === 200,
'post has content': (r) => r.body.length > 500,
});
sleep(Math.random() * 20 + 10); // Read post 10-30 seconds
// User clicks another post
response = http.get(`${BASE_URL}/post/test-post-2`);
check(response, {
'second post loaded': (r) => r.status === 200,
});
sleep(Math.random() * 15 + 5); // Read second post 5-20 seconds
});
group('03_categories', () => {
// User explores categories
const response = http.get(`${BASE_URL}/categories`);
check(response, {
'categories loaded': (r) => r.status === 200,
});
sleep(2);
// User clicks a category
const categoryResponse = http.get(`${BASE_URL}/category/Testing`);
check(categoryResponse, {
'category posts loaded': (r) => r.status === 200,
'category has posts': (r) => r.body.includes('Test Post'),
});
sleep(Math.random() * 10 + 5); // Browse category 5-15 seconds
});
}
export function handleSummary(data) {
return {
'user-journey-report.html': htmlReport(data),
};
}
Eseguire il test:
k6 run user-journey-test.js
Questo produce un rapporto HTML: user-journey-report.html
Se hai abilitato MetaWeblog, provalo anche tu:
File: metaweblog-test.js
import http from 'k6/http';
import { check } from 'k6';
import encoding from 'k6/encoding';
export const options = {
vus: 1,
iterations: 10,
};
const BASE_URL = __ENV.BASE_URL || 'http://localhost:5000';
const USERNAME = __ENV.USERNAME || 'admin';
const PASSWORD = __ENV.PASSWORD || 'changeme';
function createXmlRpcRequest(methodName, params) {
return `<?xml version="1.0"?>
<methodCall>
<methodName>${methodName}</methodName>
<params>
${params}
</params>
</methodCall>`;
}
export default function() {
// Test getRecentPosts
const recentPostsXml = createXmlRpcRequest('blogger.getRecentPosts', `
<param><value><string>0</string></value></param>
<param><value><string>${USERNAME}</string></value></param>
<param><value><string>${PASSWORD}</string></value></param>
<param><value><int>10</int></value></param>
`);
const response = http.post(`${BASE_URL}/metaweblog`, recentPostsXml, {
headers: { 'Content-Type': 'text/xml' },
});
check(response, {
'MetaWeblog API responds': (r) => r.status === 200,
'MetaWeblog returns XML': (r) => r.body.includes('<?xml'),
'MetaWeblog has methodResponse': (r) => r.body.includes('methodResponse'),
});
}
Eseguire il test:
k6 run -e USERNAME=admin -e PASSWORD=yourpassword metaweblog-test.js
L'uso più potente di k6 in CI/CD è come cancello di qualità - se le prestazioni si degradano automaticamente, non funziona. Ecco come implementare test completi di k6 in GitHub Actions.
Iniziamo con un flusso di lavoro di base che funziona su ogni richiesta di trazione e blocca la fusione se i test falliscono.
Crea .github/workflows/k6-pr-check.yml:
name: k6 Performance Check
on:
pull_request:
branches: [ main ]
jobs:
performance-check:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v4
- name: Setup .NET
uses: actions/setup-dotnet@v4
with:
dotnet-version: '9.0.x'
- name: Setup k6
run: |
sudo gpg -k
sudo gpg --no-default-keyring --keyring /usr/share/keyrings/k6-archive-keyring.gpg \
--keyserver hkp://keyserver.ubuntu.com:80 \
--recv-keys C5AD17C747E3415A3642D57D77C6C491D6AC1D69
echo "deb [signed-by=/usr/share/keyrings/k6-archive-keyring.gpg] https://dl.k6.io/deb stable main" | \
sudo tee /etc/apt/sources.list.d/k6.list
sudo apt-get update
sudo apt-get install k6
- name: Create test data
run: |
mkdir -p TestMarkdown
for i in {1..10}; do
cat > TestMarkdown/test-post-$i.md <<EOF
# Test Post $i
This is test post $i with **bold** and *italic* text.
\`\`\`csharp
public class Test { public int Value { get; set; } }
\`\`\`
EOF
done
- name: Build MinimalBlog
run: |
cd Mostlylucid.MinimalBlog.Demo
dotnet build --configuration Release
- name: Start MinimalBlog
run: |
cd Mostlylucid.MinimalBlog.Demo
dotnet run --configuration Release &
echo $! > app.pid
# Wait for app to be ready
timeout 60 bash -c 'until curl -sf http://localhost:5000 > /dev/null; do
echo "Waiting for app..."
sleep 2
done'
echo "- App is ready!"
- name: Run Smoke Test
id: smoke-test
run: |
k6 run --out json=smoke-results.json k6-tests/smoke-test.js
echo "smoke-test-passed=true" >> $GITHUB_OUTPUT
- name: Run Load Test
id: load-test
run: |
k6 run --out json=load-results.json k6-tests/load-test.js
echo "load-test-passed=true" >> $GITHUB_OUTPUT
- name: Run Cache Test
id: cache-test
run: |
k6 run --out json=cache-results.json k6-tests/cache-test.js
echo "cache-test-passed=true" >> $GITHUB_OUTPUT
- name: Stop MinimalBlog
if: always()
run: |
if [ -f Mostlylucid.MinimalBlog.Demo/app.pid ]; then
kill $(cat Mostlylucid.MinimalBlog.Demo/app.pid) || true
fi
- name: Upload Test Results
if: always()
uses: actions/upload-artifact@v4
with:
name: k6-test-results
path: |
*-results.json
*.html
retention-days: 30
- name: Check Test Results
if: always()
run: |
echo "## k6 Performance Test Results" >> $GITHUB_STEP_SUMMARY
echo "" >> $GITHUB_STEP_SUMMARY
if [ "${{ steps.smoke-test.outputs.smoke-test-passed }}" == "true" ]; then
echo "- Smoke Test: PASSED" >> $GITHUB_STEP_SUMMARY
else
echo "- Smoke Test: FAILED" >> $GITHUB_STEP_SUMMARY
fi
if [ "${{ steps.load-test.outputs.load-test-passed }}" == "true" ]; then
echo "- Load Test: PASSED" >> $GITHUB_STEP_SUMMARY
else
echo "- Load Test: FAILED" >> $GITHUB_STEP_SUMMARY
fi
if [ "${{ steps.cache-test.outputs.cache-test-passed }}" == "true" ]; then
echo "- Cache Test: PASSED" >> $GITHUB_STEP_SUMMARY
else
echo "- Cache Test: FAILED" >> $GITHUB_STEP_SUMMARY
fi
Caratteristiche chiave:
sequenceDiagram
participant PR as Pull Request
participant GHA as GitHub Actions
participant App as MinimalBlog
participant k6 as k6 Tests
PR->>GHA: Trigger workflow
GHA->>GHA: Setup .NET & k6
GHA->>GHA: Create test data
GHA->>App: Build & Start
App-->>GHA: App ready
GHA->>k6: Run smoke test
k6-->>GHA: Results
GHA->>k6: Run load test
k6-->>GHA: Results
GHA->>k6: Run cache test
k6-->>GHA: Results
GHA->>App: Stop
alt Tests Pass
GHA->>PR: Mark as success
else Tests Fail
GHA->>PR: Block merge
end
Crea .github/workflows/k6-pr-comment.yml per pubblicare i risultati come commenti delle pubbliche relazioni:
name: k6 Performance with PR Comment
on:
pull_request:
branches: [ main ]
permissions:
pull-requests: write
contents: read
jobs:
performance-test:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v4
- name: Setup .NET
uses: actions/setup-dotnet@v4
with:
dotnet-version: '9.0.x'
- name: Setup k6
uses: grafana/setup-k6-action@v1
- name: Create test data
run: |
mkdir -p TestMarkdown
for i in {1..10}; do
cat > TestMarkdown/test-post-$i.md <<EOF
# Test Post $i
Test content for post $i.
EOF
done
- name: Build and Start App
run: |
cd Mostlylucid.MinimalBlog.Demo
dotnet build -c Release
dotnet run -c Release > app.log 2>&1 &
APP_PID=$!
echo $APP_PID > app.pid
timeout 60 bash -c 'until curl -sf http://localhost:5000; do sleep 2; done'
- name: Run k6 Tests
id: k6-test
run: |
# Run tests and capture output
k6 run --out json=results.json k6-tests/load-test.js > k6-output.txt 2>&1 || true
# Parse results
if grep -q "✓" k6-output.txt; then
echo "tests-passed=true" >> $GITHUB_OUTPUT
else
echo "tests-passed=false" >> $GITHUB_OUTPUT
fi
# Extract key metrics
P95=$(grep "http_req_duration" k6-output.txt | grep -oP 'p\(95\)=\K[0-9.]+' || echo "N/A")
RPS=$(grep "http_reqs" k6-output.txt | grep -oP '\d+\.\d+/s' || echo "N/A")
ERRORS=$(grep "http_req_failed" k6-output.txt | grep -oP '\d+\.\d+%' || echo "0%")
echo "p95=${P95}" >> $GITHUB_OUTPUT
echo "rps=${RPS}" >> $GITHUB_OUTPUT
echo "errors=${ERRORS}" >> $GITHUB_OUTPUT
- name: Comment PR
uses: actions/github-script@v7
if: always()
with:
script: |
const fs = require('fs');
const output = fs.readFileSync('k6-output.txt', 'utf8');
const testsPassed = '${{ steps.k6-test.outputs.tests-passed }}' === 'true';
const icon = testsPassed ? 'PASS' : 'FAIL';
const status = testsPassed ? 'PASSED' : 'FAILED';
const comment = `## ${icon} k6 Performance Test Results
**Status:** ${status}
### Key Metrics
| Metric | Value |
|--------|-------|
| P95 Response Time | ${{ steps.k6-test.outputs.p95 }}ms |
| Requests/sec | ${{ steps.k6-test.outputs.rps }} |
| Error Rate | ${{ steps.k6-test.outputs.errors }} |
### Thresholds
- P95 < 300ms
- Error rate < 1%
<details>
<summary>Full k6 Output</summary>
\`\`\`
${output}
\`\`\`
</details>
[View full test results](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})
`;
github.rest.issues.createComment({
issue_number: context.issue.number,
owner: context.repo.owner,
repo: context.repo.repo,
body: comment
});
- name: Stop App
if: always()
run: |
[ -f Mostlylucid.MinimalBlog.Demo/app.pid ] && \
kill $(cat Mostlylucid.MinimalBlog.Demo/app.pid) || true
- name: Upload Artifacts
if: always()
uses: actions/upload-artifact@v4
with:
name: k6-results
path: |
results.json
k6-output.txt
Mostlylucid.MinimalBlog.Demo/app.log
Questo flusso di lavoro:
Crea .github/workflows/k6-baseline.yml per rilevare le regressioni delle prestazioni:
name: Performance Regression Check
on:
pull_request:
branches: [ main ]
jobs:
regression-check:
runs-on: ubuntu-latest
steps:
- name: Checkout PR code
uses: actions/checkout@v4
- name: Setup .NET
uses: actions/setup-dotnet@v4
with:
dotnet-version: '9.0.x'
- name: Setup k6
uses: grafana/setup-k6-action@v1
- name: Create test data
run: |
mkdir -p TestMarkdown
for i in {1..20}; do
echo "# Test Post $i" > TestMarkdown/test-$i.md
echo "" >> TestMarkdown/test-$i.md
echo '' >> TestMarkdown/test-$i.md
echo "Test content $i" >> TestMarkdown/test-$i.md
done
- name: Test PR Branch
run: |
cd Mostlylucid.MinimalBlog.Demo
dotnet build -c Release
dotnet run -c Release &
APP_PID=$!
timeout 60 bash -c 'until curl -sf http://localhost:5000; do sleep 2; done'
# Run test and save results
k6 run --summary-export=pr-results.json k6-tests/load-test.js
kill $APP_PID
sleep 5
- name: Checkout main branch
uses: actions/checkout@v4
with:
ref: main
path: baseline
- name: Test Baseline (main branch)
run: |
cd baseline/Mostlylucid.MinimalBlog.Demo
dotnet build -c Release
dotnet run -c Release &
APP_PID=$!
timeout 60 bash -c 'until curl -sf http://localhost:5000; do sleep 2; done'
# Run test and save results
k6 run --summary-export=baseline-results.json ../k6-tests/load-test.js
kill $APP_PID
- name: Compare Results
run: |
# Extract P95 from both runs
PR_P95=$(jq '.metrics.http_req_duration.values["p(95)"]' pr-results.json)
BASE_P95=$(jq '.metrics.http_req_duration.values["p(95)"]' baseline/baseline-results.json)
# Calculate percentage change
CHANGE=$(echo "scale=2; (($PR_P95 - $BASE_P95) / $BASE_P95) * 100" | bc)
echo "## Performance Comparison" >> $GITHUB_STEP_SUMMARY
echo "" >> $GITHUB_STEP_SUMMARY
echo "| Branch | P95 Response Time |" >> $GITHUB_STEP_SUMMARY
echo "|--------|-------------------|" >> $GITHUB_STEP_SUMMARY
echo "| main (baseline) | ${BASE_P95}ms |" >> $GITHUB_STEP_SUMMARY
echo "| PR | ${PR_P95}ms |" >> $GITHUB_STEP_SUMMARY
echo "| Change | ${CHANGE}% |" >> $GITHUB_STEP_SUMMARY
echo "" >> $GITHUB_STEP_SUMMARY
# Fail if performance degrades by more than 20%
if (( $(echo "$CHANGE > 20" | bc -l) )); then
echo "- Performance degraded by ${CHANGE}%" >> $GITHUB_STEP_SUMMARY
echo "::error::Performance regression detected: ${CHANGE}% slower than baseline"
exit 1
else
echo "- Performance acceptable" >> $GITHUB_STEP_SUMMARY
fi
Questo flusso di lavoro:
graph TD
A[PR Submitted] --> B[Checkout PR Code]
B --> C[Test PR Branch]
C --> D[Checkout main Branch]
D --> E[Test Baseline]
E --> F{Calculate<br/>Difference}
F -->|>20% Slower| G[FAIL Build]
F -->|<20% Change| H[PASS Build]
G --> I[Block Merge]
H --> J[Allow Merge]
style G stroke:#ff6b6b
style H stroke:#51cf66
Inizia velocemente, porta presto
Usare soglie appropriate
javascript // Too strict for CI thresholds: { http_req_duration: ['p(95)<100'] }
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