From bd23febefcd99aae0739ecc35195fc9781939171 Mon Sep 17 00:00:00 2001
From: Franck Cuny <franck@fcuny.net>
Date: Sat, 28 Dec 2024 13:17:45 -0800
Subject: rename packages to pkgs

This is the correct convention.
---
 pkgs/perf-flamegraph-pid/perf-flamegraph-pid.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 pkgs/perf-flamegraph-pid/perf-flamegraph-pid.sh

(limited to 'pkgs/perf-flamegraph-pid/perf-flamegraph-pid.sh')

diff --git a/pkgs/perf-flamegraph-pid/perf-flamegraph-pid.sh b/pkgs/perf-flamegraph-pid/perf-flamegraph-pid.sh
new file mode 100755
index 0000000..2ca3d16
--- /dev/null
+++ b/pkgs/perf-flamegraph-pid/perf-flamegraph-pid.sh
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+OUT_DIR="${HOME}/workspace/debug/flamegraph"
+OUT_DATA="${OUT_DIR}/$(date +%y%m%d-%H%M%S).data"
+OUT_SVG="${OUT_DIR}/$(date +%y%m%d-%H%M%S).svg"
+
+mkdir -p "${OUT_DIR}"
+
+# record the data with perf. We need to run this with sudo to get all
+# the privileges we need.
+sudo perf record -g --call-graph dwarf --freq max --output "${OUT_DATA}" "$@"
+
+# give me ownership of the file
+sudo chown "${USER}" "${OUT_DATA}"
+
+perf script --input "${OUT_DATA}" |
+  stackcollapse-perf.pl |
+  flamegraph.pl >"${OUT_SVG}"
-- 
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