From 47250615235ac11f956fd06b3d938bba91f48b37 Mon Sep 17 00:00:00 2001
From: Vincent Riquer <vincent+gitorious@riquer.fr>
Date: Mon, 20 Jan 2025 20:21:39 +0100
Subject: [PATCH] Performance

---
 doc/performances.txt | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 doc/performances.txt

diff --git a/doc/performances.txt b/doc/performances.txt
new file mode 100644
index 0000000..45ca95d
--- /dev/null
+++ b/doc/performances.txt
@@ -0,0 +1,29 @@
+# TEST DATA
+
+155GB, 14430 files in 2716 directories and subdirectories:
+$ du -sh /var/lib/mpd/music
+155G    /var/lib/mpd/music
+$ find /var/lib/mpd/music -type d|wc -l
+2716
+$ find /var/lib/mpd/music -type f|wc -l
+14430
+
+# SCANNING
+
+Initial scan takes 5 minutes, probably because of mime-type detection:
+$ time ./atom
+[...]
+14430 files found, 14430 new or changed.
+
+real    5m4.144s
+user    0m19.821s
+sys     0m17.393s
+
+A second scan takes less than 14 seconds:
+$ time ./atom
+[...]
+14430 files found, 0 new or changed.
+
+real    0m13.770s
+user    0m11.169s
+sys     0m1.844s