From 2d95514b5936e7ef9fce29183718814f5ea745d6 Mon Sep 17 00:00:00 2001
From: Mathias Ewald <mewald@evoila.de>
Date: Thu, 13 Oct 2016 20:23:11 +0200
Subject: [PATCH] Mariadb performance tuning

Change-Id: Ic2b44de0ce8e8090318380a0fed3ff1bd51dc791
Closes-Bug: #1633178
---
 ansible/roles/mariadb/templates/galera.cnf.j2 | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/ansible/roles/mariadb/templates/galera.cnf.j2 b/ansible/roles/mariadb/templates/galera.cnf.j2
index 3d7eb938e0..d74c74f29e 100644
--- a/ansible/roles/mariadb/templates/galera.cnf.j2
+++ b/ansible/roles/mariadb/templates/galera.cnf.j2
@@ -43,5 +43,15 @@ wsrep_notify_cmd=/usr/local/bin/wsrep-notify.sh
 
 max_connections=10000
 
+key_buffer_size = '64M'
+max_heap_table_size = '64M'
+tmp_table_size = '64M'
+{% set dynamic_pool_size_mb = (hostvars[inventory_hostname]['ansible_memtotal_mb'] * 0.4) | round | int %}
+{% if dynamic_pool_size_mb < 8192 %}
+innodb_buffer_pool_size = '{{ dynamic_pool_size_mb }}M'
+{% else %}
+innodb_buffer_pool_size = '8192M'
+{% endif %}
+
 [server]
 pid-file=/var/lib/mysql/mariadb.pid