Tools Practical By Samson Tanimawo, PhD Published Apr 27, 2026 4 min read

FlameGraph for Performance Analysis

FlameGraph visualises perf data.

Install

Brendan Gregg's flamegraph.pl scripts. Standalone Perl scripts.

Or use vendor-integrated FlameGraph features.

Width = time. Height = call depth. Wide bars at top = bottlenecks.

Hot functions surface at the top.

Auto-generated for production sampling.

Continuous profiling tools (Pyroscope, Parca).