diff --git a/SysadminTips.page b/SysadminTips.page
index 7b96778..cdc102a 100644
--- a/SysadminTips.page
+++ b/SysadminTips.page
@@ -1,3 +1,10 @@
+MySQL "fast" shutdown.
+
+~~~
+set global innodb_max_dirty_pages_pct = 0
+show global status like '%dirty%';
+~~~
+
 mkfs.ext4 for old systems in rescue mode (Debien Wheezy, …).
 
 ~~~