--- title: JMeter Performance Testing (Part 3): Finding the... description: Part 3 of a JMeter performance testing series focuses on data-driven load testing using CSV Data Set Config to simulate realistic multi-user traffic. A Python... canonical: https://daily.dev/posts/jmeter-performance-testing-part-3-finding-the-breaking-point-with-data-driven-scenarios-woqjc0ais twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: JMeter Performance Testing (Part 3): Finding the Breaking Point with Data-Driven Scenarios | daily.dev og:description: Part 3 of a JMeter performance testing series focuses on data-driven load testing using CSV Data Set Config to simulate realistic multi-user traffic. A Python... og:url: https://daily.dev/posts/jmeter-performance-testing-part-3-finding-the-breaking-point-with-data-driven-scenarios-woqjc0ais og:image: https://api.daily.dev/og/posts/woQJC0AIS.png og:image:alt: JMeter Performance Testing (Part 3): Finding the Breaking Point with Data-Driven Scenarios og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # JMeter Performance Testing (Part 3): Finding the Breaking Point with Data-Driven Scenarios **[ITNEXT](https://daily.dev/sources/itnext)** · 5 min read · 0 upvotes · 0 comments ## Summary Part 3 of a JMeter performance testing series focuses on data-driven load testing using CSV Data Set Config to simulate realistic multi-user traffic. A Python script generates 5,000 unique user credentials injected into JMeter via parameterization. Two test runs are compared: 100 concurrent users yield a 0% error rate and 239ms average response time, while 1,000 concurrent users expose the system's breaking point with a ~40% error rate, 4.6s average response time, and max response times of ~55 seconds. CPU saturation and MySQL database connection pool exhaustion are identified as the primary bottlenecks in the local Docker environment. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Part 3: The Insight — Catching the Bottleneck Red-Handed](https://daily.dev/posts/part-3-the-insight-catching-the-bottleneck-red-handed-sumo06zk4) · ITNEXT · 2 upvotes · 0 comments - [How to Build Your First Dynamic Performance Test in Apache JMeter](https://daily.dev/posts/how-to-build-your-first-dynamic-performance-test-in-apache-jmeter-fswqrkwmn) · freeCodeCamp · 4 upvotes · 0 comments - [Load Testing for Traffic Spikes: When 200,000 Users Arrive in the Same Minute](https://daily.dev/posts/load-testing-for-traffic-spikes-when-200-000-users-arrive-in-the-same-minute-dkd9non89) · Software Testing Magazine · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#testing](https://daily.dev/tags/testing), [#docker](https://daily.dev/tags/docker), [#load-testing](https://daily.dev/tags/load-testing) [View this post on daily.dev](https://daily.dev/posts/jmeter-performance-testing-part-3-finding-the-breaking-point-with-data-driven-scenarios-woqjc0ais) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"JMeter Performance Testing (Part 3): Finding the Breaking Point with Data-Driven Scenarios","url":"https://daily.dev/posts/jmeter-performance-testing-part-3-finding-the-breaking-point-with-data-driven-scenarios-woqjc0ais","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/jmeter-performance-testing-part-3-finding-the-breaking-point-with-data-driven-scenarios-woqjc0ais"},"datePublished":"2026-02-25T14:45:24.302Z","dateModified":"2026-02-25T14:45:48.873Z","description":"Part 3 of a JMeter performance testing series focuses on data-driven load testing using CSV Data Set Config to simulate realistic multi-user traffic. A Python...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/37f6bb15ca52cf2a3c8f6b62218737fa?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/37f6bb15ca52cf2a3c8f6b62218737fa?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"ITNEXT","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ITNEXT","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/itnext2","url":"https://daily.dev/sources/itnext"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/jmeter-performance-testing-part-3-finding-the-breaking-point-with-data-driven-scenarios-woqjc0ais","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,testing,docker,load-testing","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ITNEXT","item":"https://daily.dev/sources/itnext"},{"@type":"ListItem","position":3,"name":"JMeter Performance Testing (Part 3): Finding the Breaking Point with Data-Driven Scenarios"}]} ```