From 5f23af510bd9031c515f2a3cc495bd996c795e69 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Fri, 27 Feb 2026 18:52:23 +0200
Subject: flamegraph: add live baseline reset hotkey

---
 README.md | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'README.md')

diff --git a/README.md b/README.md
index d9f4dce..19282f7 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,28 @@ This generates an SVG and starts an embedded web server. The terminal prints a U
 Flamegraph available at http://HOSTNAME:PORT/abs/path/to.svg
 ```
 
+## Live Flamegraph Mode
+
+Run live mode (requires root privileges):
+
+```sh
+sudo ./ior -live -pid <PID> -live-interval 200ms -duration 300
+```
+
+The terminal prints a URL like:
+
+```text
+Live flamegraph available at http://HOSTNAME:PORT/
+```
+
+Live controls:
+
+- `Space`: pause/resume incoming updates.
+- `/`: search frame labels.
+- `Escape`: reset zoom and search highlighting.
+- `r`: reset baseline (clears all live aggregated stats on the server and restarts from zero).
+- `Reset Baseline` button: same behavior as `r`.
+
 ## TUI Hotkeys
 
 The TUI has two key scopes:
-- 
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