{"id":11289,"date":"2025-03-05T22:33:44","date_gmt":"2025-03-06T03:33:44","guid":{"rendered":"https:\/\/www.redline13.com\/blog\/?p=11289"},"modified":"2025-03-05T22:39:02","modified_gmt":"2025-03-06T03:39:02","slug":"jmeter-rotating-jtl-listener","status":"publish","type":"post","link":"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/","title":{"rendered":"JMeter Rotating JTL Listener"},"content":{"rendered":"<p><a id=\"post-11289-_iioq9vex4gt0\"><\/a> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11290\" src=\"https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-1.png\" alt=\"JMeter Rotating JTL Listener\" width=\"400\" height=\"300\" srcset=\"https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-1.png 400w, https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-1-300x225.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>The <a href=\"https:\/\/github.com\/abstracta\/jmeter-bzm-plugins\/blob\/master\/rotating-listener\/RotatingListener.md\" target=\"_blank\" rel=\"noopener\"><em>Rotating JTL Listener<\/em><\/a> is a component that can be added to <a href=\"https:\/\/jmeter.apache.org\/usermanual\/index.html\" target=\"_blank\" rel=\"noopener\">JMeter<\/a> tests, which has the effect of segmenting <a href=\"https:\/\/cwiki.apache.org\/confluence\/display\/jmeter\/jtlfiles\" target=\"_blank\" rel=\"noopener\"><code>JTL<\/code><\/a>\u00a0output into sequential files. This feature can be especially useful for very large tests, where it would be desirable to break one large <code>JTL<\/code> file into several smaller files to make them more manageable. Another use case might involve a background process that consumes result files in similarly large tests.<\/p>\n<p>In order to add the <em>Rotating JTL Listener<\/em> to your test you will first need to install it from the <a href=\"https:\/\/jmeter-plugins.org\/wiki\/PluginsManager\/\" target=\"_blank\" rel=\"noopener\">JMeter Plugin Manager<\/a>. There are only a few parameters which need to be configured:<\/p>\n<ul>\n<li><strong>Filename<\/strong> \u2013 This field specifies the base filename for sequentially generated <code>JTL<\/code> output files.<\/li>\n<li><strong>Limit samples count in file <\/strong>\u2013 Specifies the maximum number of sample rows before moving to the next sequential output file.<\/li>\n<\/ul>\n<figure id=\"attachment_11291\" class=\"wp-caption aligncenter\" style=\"max-width: 735px\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-11291\" src=\"https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-2.png\" alt=\"Configuring the Rotating JTL Listener component\" width=\"735\" height=\"346\" srcset=\"https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-2.png 735w, https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-2-300x141.png 300w, https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-2-425x200.png 425w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><figcaption class=\"wp-caption-text\">Configuring the Rotating JTL Listener component.<\/figcaption><\/figure>\n<p>Adding this component to your load test has the effect of changing the <code>JTL<\/code> output to the designated filename, where files are output in a sequence in the form of:<\/p>\n<p><code>result.jtl \u2192 result.1.jtl \u2192 result.2.jtl \u2192 \u2026 result.n.jtl<\/code><\/p>\n<p>Each <code>JTL<\/code> file generated will contain up to the number of lines as the specified sample count limit.<\/p>\n<hr \/>\n<p>Did you know that RedLine13 offers a full-featured, time-limited free trial?\u00a0 <a href=\"https:\/\/www.redline13.com\/Service\" target=\"_blank\" rel=\"noopener\">Sign up now<\/a>, and start testing today!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Rotating JTL Listener is a component that can be added to JMeter tests, which has the effect of segmenting JTL\u00a0output into sequential files. This feature can be especially useful for very large tests, where it would be desirable to break one large JTL file into several smaller files to make them more manageable. Another use case might involve a background process that consumes result files in similarly large tests. In order to add the Rotating<a class=\"more-link\" href=\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\">Read More &rarr;<\/a><\/p>\n","protected":false},"author":11,"featured_media":11290,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,1],"tags":[283,299,302,656,318,575,424,426],"class_list":{"0":"entry","1":"post","2":"publish","3":"author-dkoziel","4":"post-11289","6":"format-standard","7":"has-post-thumbnail","8":"category-blog","9":"category-uncategorized","10":"post_tag-jmeter","11":"post_tag-jmeter-plugins","12":"post_tag-jtl","13":"post_tag-jtl-files","14":"post_tag-load-testing","15":"post_tag-output-files","16":"post_tag-redline13","17":"post_tag-redline13-customer"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.12 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JMeter Rotating JTL Listener - RedLine13<\/title>\n<meta name=\"description\" content=\"In this brief article, we will review how to add and configure the Rotating JTL Listener for output file segmentation within JMeter tests.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JMeter Rotating JTL Listener - RedLine13\" \/>\n<meta property=\"og:description\" content=\"In this brief article, we will review how to add and configure the Rotating JTL Listener for output file segmentation within JMeter tests.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\" \/>\n<meta property=\"og:site_name\" content=\"RedLine13\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-06T03:33:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-06T03:39:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.redline13.com\/blog\/wp-content\/uploads\/2025\/03\/word-image-11289-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"David Koziel\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"David Koziel\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\"},\"author\":{\"name\":\"David Koziel\",\"@id\":\"https:\/\/www.redline13.com\/blog\/#\/schema\/person\/51d282221e3230ab35f964f98ada9b20\"},\"headline\":\"JMeter Rotating JTL Listener\",\"datePublished\":\"2025-03-06T03:33:44+00:00\",\"dateModified\":\"2025-03-06T03:39:02+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\"},\"wordCount\":216,\"publisher\":{\"@id\":\"https:\/\/www.redline13.com\/blog\/#organization\"},\"keywords\":[\"JMeter\",\"jmeter-plugins\",\"jtl\",\"JTL files\",\"Load Testing\",\"Output Files\",\"RedLine13\",\"redline13 customer\"],\"articleSection\":[\"Blog\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\",\"url\":\"https:\/\/www.redline13.com\/blog\/2025\/03\/jmeter-rotating-jtl-listener\/\",\"name\":\"JMeter Rotating JTL Listener - 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