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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>JMeter Scripting Steps</title>
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<body>
<div class="bg-grid"></div>
<div class="bg-blob a"></div>
<div class="bg-blob b"></div>
<div class="bg-blob c"></div>
<div class="page">
<div class="hero">
<div class="hero-badge">Scripting Guide · Apache JMeter</div>
<h1>Steps for JMeter Scripting</h1>
<p class="hero-sub">A structured process to create <strong>reliable, reusable, and realistic</strong> performance test scripts that simulate real user behavior.</p>
<div class="hero-goals">
<span class="hg" style="background:var(--c1b);border:1px solid var(--c1d);color:var(--c1);">Realistic</span>
<span class="hg" style="background:var(--c2b);border:1px solid var(--c2d);color:var(--c2);">Scalable</span>
<span class="hg" style="background:var(--c4b);border:1px solid var(--c4d);color:var(--c4);">Reusable</span>
<span class="hg" style="background:var(--c6b);border:1px solid var(--c6d);color:var(--c6);">Stable</span>
</div>
</div>
<!-- E2E FLOW -->
<div class="flow-box">
<div class="flow-label">End-to-End Scripting Flow</div>
<div class="flow-chain">
<div class="flow-node fn1">Requirement</div><span class="flow-arrow">→</span>
<div class="flow-node fn1">Environment Setup</div><span class="flow-arrow">→</span>
<div class="flow-node fn2">Test Plan</div><span class="flow-arrow">→</span>
<div class="flow-node fn2">Thread Group</div><span class="flow-arrow">→</span>
<div class="flow-node fn3">Add Requests</div><span class="flow-arrow">→</span>
<div class="flow-node fn4">Correlation</div><span class="flow-arrow">→</span>
<div class="flow-node fn4">Parameterization</div><span class="flow-arrow">→</span>
<div class="flow-node fn4">Assertions</div><span class="flow-arrow">→</span>
<div class="flow-node fn5">Debug</div><span class="flow-arrow">→</span>
<div class="flow-node fn5">Dry Run</div><span class="flow-arrow">→</span>
<div class="flow-node fn6">CLI Exec</div><span class="flow-arrow">→</span>
<div class="flow-node fn6">Report</div>
</div>
</div>
<!-- ═══ STEP 1 ═══ -->
<div class="step s1">
<div class="step-rail"><div class="step-num">01</div><div class="step-line"></div></div>
<div class="step-card">
<div class="sc-bar"></div>
<div class="sc-head"><h2>Preparation & Environment Setup</h2><span class="sc-icon">🛠️</span></div>
<div class="sc-body">
<div class="ss">
<div class="ss-head"><span class="ss-icon">☕</span><h3>Install Java (JDK 11+)</h3></div>
<div class="cb">java -version</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">📦</span><h3>Download & Launch JMeter</h3></div>
<div class="two-way">
<div class="cb">Windows: jmeter.bat</div>
<div class="cb">Linux/Mac: ./jmeter.sh</div>
</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">🎯</span><h3>Define Test Objectives</h3></div>
<div class="tags">
<span class="tag">Expected Load</span><span class="tag">Response Time SLA</span><span class="tag">TPS Target</span><span class="tag">Test Duration</span><span class="tag">Business Transactions</span>
</div>
<div class="ex"><strong>Login API should respond within 2 seconds for 1,000 concurrent users.</strong></div>
</div>
</div>
</div>
</div>
<!-- ═══ STEP 2 ═══ -->
<div class="step s2">
<div class="step-rail"><div class="step-num">02</div><div class="step-line"></div></div>
<div class="step-card">
<div class="sc-bar"></div>
<div class="sc-head"><h2>Building the Test Plan Structure</h2><span class="sc-icon">📐</span></div>
<div class="sc-body">
<div class="ss">
<div class="ss-head"><span class="ss-icon">👥</span><h3>Add Thread Group</h3></div>
<table class="mt"><thead><tr><th>Parameter</th><th>Value</th><th>Meaning</th></tr></thead><tbody>
<tr><td>Threads</td><td>100</td><td>Virtual Users</td></tr>
<tr><td>Ramp-Up</td><td>50 sec</td><td>Time to start all users</td></tr>
<tr><td>Loop Count</td><td>10</td><td>Each user repeats 10×</td></tr>
</tbody></table>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">⚙️</span><h3>Add Config Elements</h3></div>
<table class="mt"><thead><tr><th>Element</th><th>Purpose</th></tr></thead><tbody>
<tr><td>HTTP Request Defaults</td><td>Default server details</td></tr>
<tr><td>HTTP Header Manager</td><td>Content-Type, Auth headers</td></tr>
<tr><td>HTTP Cookie Manager</td><td>Session handling</td></tr>
<tr><td>CSV Data Set Config</td><td>Test data parameterization</td></tr>
</tbody></table>
<div class="note"><strong>Tip:</strong> Configure server URL once in HTTP Request Defaults instead of repeating in every sampler.</div>
</div>
</div>
</div>
</div>
<!-- ═══ STEP 3 ═══ -->
<div class="step s3">
<div class="step-rail"><div class="step-num">03</div><div class="step-line"></div></div>
<div class="step-card">
<div class="sc-bar"></div>
<div class="sc-head"><h2>Creating Samplers (Requests)</h2><span class="sc-icon">📡</span></div>
<div class="sc-body">
<div class="two-way">
<div class="ss">
<div class="ss-head"><span class="ss-icon">✍️</span><h3>Manual Entry</h3></div>
<div class="ss-desc">Thread Group → Add → Sampler → HTTP Request</div>
<table class="mt"><thead><tr><th>Field</th><th>Value</th></tr></thead><tbody>
<tr><td>Method</td><td>POST</td></tr>
<tr><td>Path</td><td>/login</td></tr>
<tr><td>Body</td><td>username=test</td></tr>
</tbody></table>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">🔴</span><h3>Recording</h3></div>
<div class="ss-desc">HTTP(S) Test Script Recorder captures browser traffic automatically.</div>
<div class="tags">
<span class="tag">1. Configure proxy</span>
<span class="tag">2. Set browser proxy</span>
<span class="tag">3. Install SSL cert</span>
<span class="tag">4. Navigate app</span>
<span class="tag">5. Auto-capture</span>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- ═══ STEP 4 ═══ -->
<div class="step s4">
<div class="step-rail"><div class="step-num">04</div><div class="step-line"></div></div>
<div class="step-card">
<div class="sc-bar"></div>
<div class="sc-head"><h2>Enhancing the Script</h2><span class="sc-icon">✨</span></div>
<div class="sc-body">
<div class="sc-desc">Recorded scripts are static. <strong>Enhancement makes them realistic and reusable</strong> — correlation, parameterization, assertions, and timers.</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">🔗</span><h3>Correlation</h3></div>
<div class="ss-desc">Capture dynamic values (Session ID, CSRF Token, JWT) from one request and use in the next.</div>
<div class="cb" style="color:var(--c4);">Response: {"token":"abc123xyz"}<br>JSON Extractor → ${token}<br>Next Request Header: Authorization: Bearer ${token}</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">📊</span><h3>Parameterization</h3></div>
<div class="ss-desc">Use external test data via <strong>CSV Data Set Config</strong> instead of hardcoded values.</div>
<div class="cb" style="color:var(--c4);">CSV: username,password<br> user1,pass1<br> user2,pass2<br>→ Each VU picks unique data</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">✅</span><h3>Assertions</h3></div>
<div class="ss-desc">Validate response correctness — not just HTTP 200, but actual content.</div>
<table class="mt"><thead><tr><th>Assertion</th><th>Purpose</th></tr></thead><tbody>
<tr><td>Response Assertion</td><td>Validate text content</td></tr>
<tr><td>Duration Assertion</td><td>Validate response time</td></tr>
<tr><td>JSON Assertion</td><td>Validate JSON fields</td></tr>
<tr><td>Size Assertion</td><td>Validate payload size</td></tr>
</tbody></table>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">⏱️</span><h3>Timers</h3></div>
<div class="ss-desc">Simulate real-user think time between requests.</div>
<table class="mt"><thead><tr><th>Timer</th><th>Purpose</th></tr></thead><tbody>
<tr><td>Constant Timer</td><td>Fixed delay (e.g., 5 sec)</td></tr>
<tr><td>Gaussian Random</td><td>Realistic random delay</td></tr>
<tr><td>Uniform Random</td><td>Randomized wait range</td></tr>
</tbody></table>
</div>
</div>
</div>
</div>
<!-- ═══ STEP 5 ═══ -->
<div class="step s5">
<div class="step-rail"><div class="step-num">05</div><div class="step-line"></div></div>
<div class="step-card">
<div class="sc-bar"></div>
<div class="sc-head"><h2>Debugging & Validation</h2><span class="sc-icon">🔍</span></div>
<div class="sc-body">
<div class="two-way">
<div class="ss">
<div class="ss-head"><span class="ss-icon">🌳</span><h3>View Results Tree</h3></div>
<div class="ss-desc">Inspect request/response, headers, variables, errors. Verify <strong>${token}</strong> is correctly captured.</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">🧪</span><h3>Dry Run (1 User)</h3></div>
<div class="ss-desc">Execute with <strong>1 user</strong> before large-scale runs.</div>
<div class="tags">
<span class="tag">Login works ✓</span>
<span class="tag">Correlation works ✓</span>
<span class="tag">Data picks ✓</span>
<span class="tag">Assertions pass ✓</span>
</div>
</div>
</div>
<div class="note"><strong>1 User</strong> = Functional validation · <strong>1,000 Users</strong> = Performance testing</div>
</div>
</div>
</div>
<!-- ═══ STEP 6 ═══ -->
<div class="step s6">
<div class="step-rail"><div class="step-num">06</div><div class="step-line" style="opacity:0"></div></div>
<div class="step-card">
<div class="sc-bar"></div>
<div class="sc-head"><h2>Test Execution & Best Practices</h2><span class="sc-icon">🚀</span></div>
<div class="sc-body">
<div class="ss">
<div class="ss-head"><span class="ss-icon">💻</span><h3>Execute in CLI Mode (Non-GUI)</h3></div>
<div class="ss-desc">GUI consumes CPU/memory and reduces JMeter performance. <strong>Always use CLI for load tests.</strong></div>
<div class="cb" style="color:var(--c6);">jmeter -n -t TestPlan.jmx -l results.jtl</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">🚫</span><h3>Disable Heavy Listeners</h3></div>
<div class="ss-desc">Avoid View Results Tree / Table during load tests — they consume huge memory and may crash JMeter.</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">🧠</span><h3>Heap Memory Tuning</h3></div>
<div class="ss-desc">Increase JVM heap for large tests. Edit jmeter.bat or jmeter.sh:</div>
<div class="cb" style="color:var(--c6);">HEAP=-Xms2g -Xmx4g<br>→ Initial: 2 GB · Max: 4 GB</div>
</div>
<div class="ss">
<div class="ss-head"><span class="ss-icon">📊</span><h3>Generate HTML Report</h3></div>
<div class="cb" style="color:var(--c6);">jmeter -g results.jtl -o ReportFolder</div>
</div>
</div>
</div>
</div>
<!-- SUMMARY -->
<div class="sum-head"><div class="sh-icon">∑</div><h2>Scripting Summary</h2></div>
<div class="sum-wrap">
<table class="sum">
<thead><tr><th>Step</th><th>Purpose</th></tr></thead>
<tbody>
<tr><td><span class="dot" style="background:var(--c1)"></span>Environment Setup</td><td>Prepare Java & JMeter</td></tr>
<tr><td><span class="dot" style="background:var(--c2)"></span>Test Plan Creation</td><td>Thread Group, Config Elements</td></tr>
<tr><td><span class="dot" style="background:var(--c3)"></span>Sampler Creation</td><td>Manual entry or recording</td></tr>
<tr><td><span class="dot" style="background:var(--c4)"></span>Enhancement</td><td>Correlation, parameterization, assertions, timers</td></tr>
<tr><td><span class="dot" style="background:var(--c5)"></span>Debug & Validate</td><td>Results Tree, dry run with 1 user</td></tr>
<tr><td><span class="dot" style="background:var(--c6)"></span>Execution</td><td>CLI mode, heap tuning, HTML report</td></tr>
</tbody>
</table>
</div>
<div class="footer">
<p><span class="fa">JMETER SCRIPTING</span> · Setup → Build → Enhance → Debug → Execute → Analyze · Author: Angshuman Basak</p>
</div>
</div>
</body>
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