{"id":6318,"date":"2024-04-25T10:13:49","date_gmt":"2024-04-25T14:13:49","guid":{"rendered":"https:\/\/blogs.mathworks.com\/videos\/?p=6318"},"modified":"2024-04-25T10:13:49","modified_gmt":"2024-04-25T14:13:49","slug":"example-of-using-the-profiler-to-help-reduce-the-execution-time-of-a-function","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/videos\/2024\/04\/25\/example-of-using-the-profiler-to-help-reduce-the-execution-time-of-a-function\/","title":{"rendered":"Example of Using the Profiler to Help Reduce the Execution Time of a Function"},"content":{"rendered":"<p>I have a function which analyzes the contents of a few hundred folders. Its taking several minutes to run and I use it a lot, so I want to try and make it execute faster.<\/p>\n<p>I propose using the profiler to try and understand where the time is spent and explore some code changes. <\/p>\n<p>I often find with my performance improvement work, that the first changes I make are to my algorithm, or code architecture. For example, by ensuring that I only execute the computations that I need to. Later, I might then look at speeding up those computations.<\/p>\n<p>Features covered in this <a href=\"https:\/\/blogs.mathworks.com\/videos\/2015\/10\/29\/matlab-code-along-videos\/\">code-along<\/a> style video include:<\/p>\n<ul>\n<li><tt><a href=\"https:\/\/www.mathworks.com\/help\/matlab\/matlab_prog\/profiling-for-improving-performance.html\">profiler<\/a><\/tt><\/li>\n<\/ul>\n<p><div class=\"row\"><div class=\"col-xs-12 containing-block\"><div class=\"bc-outer-container add_margin_20\"><videoplayer><div class=\"video-js-container\"><video data-video-id=\"6351619381112\" data-video-category=\"blog\" data-autostart=\"false\" data-account=\"62009828001\" data-omniture-account=\"mathwgbl\" data-player=\"rJ9XCz2Sx\" data-embed=\"default\" id=\"mathworks-brightcove-player\" class=\"video-js\" controls><\/video><script src=\"\/\/players.brightcove.net\/62009828001\/rJ9XCz2Sx_default\/index.min.js\"><\/script><script>if (typeof(playerLoaded) === 'undefined') {var playerLoaded = false;}(function isVideojsDefined() {if (typeof(videojs) !== 'undefined') {videojs(\"mathworks-brightcove-player\").on('loadedmetadata', function() {playerLoaded = true;});} else {setTimeout(isVideojsDefined, 10);}})();<\/script><\/div><\/videoplayer><\/div><\/div><\/div><\/p>\n<p>Play the video in full screen mode for a better viewing experience.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"thumbnail thumbnail_asset asset_overlay video\"><a href=\"https:\/\/blogs.mathworks.com\/videos\/2024\/04\/25\/example-of-using-the-profiler-to-help-reduce-the-execution-time-of-a-function\/?dir=autoplay\"><img decoding=\"async\" src=\"https:\/\/cf-images.us-east-1.prod.boltdns.net\/v1\/static\/62009828001\/bf4a7fdc-b407-41af-9730-67bba1007b65\/9a69711e-d7fd-4098-8997-a17a1080a1ba\/1280x720\/match\/image.jpg\" onError=\"this.style.display ='none';\"\/><\/p>\n<div class=\"overlay_container\">\n      <span class=\"icon-video icon_color_null\"><time class=\"video_length\">41:27<\/time><\/span>\n      <\/div>\n<p>      <\/a><\/div>\n<p>I have a function which analyzes the contents of a few hundred folders. Its taking several minutes to run and I use it a lot, so I want to try and make it execute faster.<br \/>\nI propose using the profiler&#8230; <a class=\"read-more\" href=\"https:\/\/blogs.mathworks.com\/videos\/2024\/04\/25\/example-of-using-the-profiler-to-help-reduce-the-execution-time-of-a-function\/\">read more >><\/a><\/p>\n","protected":false},"author":133,"featured_media":6348,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[27,4],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/6318"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/users\/133"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/comments?post=6318"}],"version-history":[{"count":11,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/6318\/revisions"}],"predecessor-version":[{"id":6354,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/6318\/revisions\/6354"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/media\/6348"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/media?parent=6318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/categories?post=6318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/tags?post=6318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}