From b0848e5cc595e96be08e30c9b3d48f4bf55599dd Mon Sep 17 00:00:00 2001
From: jfcoz <you@example.com>
Date: Fri, 3 Jun 2016 08:33:02 +0200
Subject: [PATCH] add skip-name-resolve recommandation

---
 mysqltuner.pl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/mysqltuner.pl b/mysqltuner.pl
index 105a185..6a89730 100755
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -2501,6 +2501,14 @@ sub mysql_stats {
 "Aborted connections: $mycalc{'pct_connections_aborted'}%  ($mystat{'Aborted_connects'}/$mystat{'Connections'})";
     }
 
+    # name resolution
+    if ($result{'Variables'}{'skip_name_resolve'} eq 'OFF') {
+        badprint
+"name resolution is active : a reverse name resolution is made for each new connection and can reduce performance";
+        push( @generalrec,
+            "Configure your accounts with ip or subnets only, then update your configuration with skip-name-resolve=1" );
+    }
+
     # Query cache
     if ( !mysql_version_ge(4) ) {