From ad9228d029ea0f92277a93efd896be509b339fc5 Mon Sep 17 00:00:00 2001
From: root <jmrenouard@gmail.com>
Date: Mon, 10 Oct 2016 16:54:45 +0200
Subject: [PATCH] * Event per wait total latency * Event per wait read latency
 * Event per wait write latency

---
 INTERNALS.md  | 32 ++++++++++++++++++++++++++++----
 mysqltuner.pl | 29 ++++++++++++++++++++++++++++-
 2 files changed, 56 insertions(+), 5 deletions(-)

diff --git a/INTERNALS.md b/INTERNALS.md
index ad9b1f3..6094b6a 100644
--- a/INTERNALS.md
+++ b/INTERNALS.md
@@ -17,13 +17,17 @@
 * [Global buffer information](#mysqltuner-global-buffer-information)
 * [Query cache checks](#mysqltuner-query-cache-checks)
 * [Slow queries checks](#mysqltuner-slow-queries-checks)
+* [ThreadPool information](#mysqltuner-threadpool-information)
 * [Replication checks](#mysqltuner-replication-checks)
 * [InnoDB information](#mysqltuner-innodb-information)
-* [ARIADB information](#mysqltuner-ariadb-information)
 * [MYISAM information](#mysqltuner-myisam-information)
-* [GALERA information](#mysqltuner-galera-information)
+* [ARIADB information](#mysqltuner-ariadb-information)
+* [XTRADB information](#mysqltuner-xtradb-information)
 * [TOKUDB information](#mysqltuner-tokudb-information)
-* [ThreadPool information](#mysqltuner-threadpool-information)
+* [ROCKDB information](#mysqltuner-rockdb-information)
+* [CONNECT information](#mysqltuner-connect-information)
+* [SPIDER information](#mysqltuner-spider-information)
+* [GALERA information](#mysqltuner-galera-information)
 * [Performance Schema information](#mysqltuner-performance-schema-and-sysschema-information)
 
 ## MySQLTuner steps
@@ -266,6 +270,22 @@
 * tokudb_cleaner_iterations
 * tokudb_fanout
 
+## MySQLTuner XtraDB information
+
+*  Nothing for the moment
+
+## MySQLTuner Connect information
+
+*  Nothing for the moment
+
+## MySQLTuner Spider information
+
+*  Nothing for the moment
+
+## MySQLTuner RocksDb information
+
+*  Nothing for the moment
+  
 ## MySQLTuner Thread pool information
 
 * thread_pool_size between 16 to 36 for Innodb usage
@@ -322,4 +342,8 @@
 * File per IO read latency
 * File per IO write latency
 * Event Wait by read bytes
-* Event Wait by write bytes
\ No newline at end of file
+* Event Wait by write bytes
+* Event per wait total latency
+* Event per wait read latency
+* Event per wait write latency
+
diff --git a/mysqltuner.pl b/mysqltuner.pl
index 5978dd4..6c2e2b9 100755
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -3612,9 +3612,36 @@ sub mysqsl_pfs {
     }
     infoprint "No information found or indicators desactivated." if ($nbL == 1);
 
+# event per wait total latency
+    subheaderprint "Performance schema: event per wait total latency";
+    $nbL=1;
+    for my $lQuery(select_array ('use sys;select event_name, total_latency from io_global_by_wait_by_latency ORDER BY total_latency DESC LIMIT 20;')) {
+      infoprint " +-- $nbL: $lQuery";
+      $nbL++;
+    }
+    infoprint "No information found or indicators desactivated." if ($nbL == 1);
+
+    # event per wait read latency
+    subheaderprint "Performance schema: event per wait read latency";
+    $nbL=1;
+    for my $lQuery(select_array ('use sys;select event_name, read_latency from io_global_by_wait_by_latency ORDER BY read_latency DESC LIMIT 20;')) {
+      infoprint " +-- $nbL: $lQuery";
+      $nbL++;
+    }
+    infoprint "No information found or indicators desactivated." if ($nbL == 1);
+
+    # event per wait write latency
+    subheaderprint "Performance schema: event per wait write latency";
+    $nbL=1;
+    for my $lQuery(select_array ('use sys;select event_name, write_latency from io_global_by_wait_by_latency ORDER BY write_latency DESC LIMIT 20;')) {
+      infoprint " +-- $nbL: $lQuery";
+      $nbL++;
+    }
+    infoprint "No information found or indicators desactivated." if ($nbL == 1);
+
 ##################################################################################
 
-#io_global_by_wait_by_latency
+
 # Latest file IO by latency
     subheaderprint "Performance schema: Latest FILE IO by latency";
     $nbL=1;