Pinpointing hottest Perl code paths (using OpenResty XRay)

OpenResty XRay: https://openresty.com/en/xray/

In this tutorial, you will get a step-by-step tour of how to use OpenResty XRay to identify the most CPU-intensive Perl code paths in your applications.
These code paths are the ones that consume the most CPU time and may affect your application’s performance.

Text version of this tutorial: https://blog.openresty.com/en/perl-high-cpu/

OpenResty XRay is a dynamic-tracing product that automatically analyzes your running applications to troubleshoot performance problems, behavioral issues, and security vulnerabilities with actionable suggestions.
Under the hood, OpenResty XRay is powered by our Y language targeting various runtimes like Stap+, eBPF+, GDB, and ODB, depending on the contexts.
OpenResty XRay is a truly non-intrusive dynamic analysis, which does not require installing any special modules or plugins in the target application, does not require recompiling the target application, and even does not require restarting the running process.

Music: https://www.bensound.com