How CPU time is spent inside Go's etcd server (using OpenResty XRay)

Опубликовано: 13 Март 2026
на канале: OpenResty
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Try out OpenResty XRay for free: https://openresty.com/en/xray/

In this tutorial, we will demonstrate how the CPU time is spent qualitatively inside Go's etcd server with OpenResty XRay. We will show the most CPU-intensive Go code paths in it. OpenResty XRay will automatically analyze the Go (golang) language level CPU flame graph.

Text version of this tutorial: https://blog.openresty.com/en/etcd-cp...

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