From 71e814076ad8765c86820725e744964d8376b455 Mon Sep 17 00:00:00 2001
From: "Ben Sheldon [he/him]" <bensheldon@gmail.com>
Date: Fri, 8 Dec 2023 07:47:56 -0800
Subject: [PATCH] Explain difference between Flame Graph and Stack Chart

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 043861b..7682e97 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,9 @@ Vernier.trace(out: "time_profile.json") { some_slow_method }
 
 The output can then be viewed in the Firefox Profiler (demo) or the [`profile-viewer` gem](https://github.com/tenderlove/profiler/tree/ruby) (a Ruby-customized version of the firefox profiler.
 
+- **Flame Graph**: Shows proportionally how much time is spent within particular stack frames. Frames are grouped together, which means that x-axis / left-to-right order is not meaningful.
+- **Stack Chart**: Shows the stack at each sample with the x-axis representing time and can be read left-to-right.
+
 ### Retained memory
 
 Record a flamegraph of all **retained** allocations from loading `irb`.