https://akshayd-dev.pages.dev/tags/profiling/ Recent content in Profiling on Akshay Deshpande Hugo en-us Sun, 26 Apr 2020 00:00:00 +0000 https://akshayd-dev.pages.dev/posts/performance-flame-graphs/ Sun, 26 Apr 2020 00:00:00 +0000 https://akshayd-dev.pages.dev/posts/performance-flame-graphs/ <p>In the <a href="https://performanceengineeringin.wordpress.com/2020/03/15/performance-profiling-with-linux-perf-command-line-tool/">previous article</a> we explored the basic capabilities of linux Perf_tool.<br> In this write-up I am trying to extend these capabilities and show how to generate and read <strong><em>Flame Graphs</em></strong> for analyzing the profiles generated with Perf_tool.</p> <h2 id="how-to-generate-flame-graphs-">How to generate Flame Graphs ?</h2> <ul> <li>To start with, we will need perf_tools linux profiler to capture the profile first. Follow the steps under &ldquo;<em>How to setup perf tool?</em>&rdquo; in the <a href="https://performanceengineeringin.wordpress.com/2020/03/15/performance-profiling-with-linux-perf-command-line-tool/">previous article</a>.</li> <li>Now if you collect a profile of the CPU using <em>perf_tool</em> setup in the above step, there is a possibility that you might see a lot of <em>symbol link values</em> in the place of Function names.</li> </ul> <p><img loading="lazy" src="https://akshayd-dev.pages.dev/posts/performance-flame-graphs/images/image.png"></p>