Hello I'm optimizing the my mysql (mariadb 10.1.11) server and mysqltuner.pl offering non-stop the increase query_cache_size variable. For now, it is 512M but it still offer. I did 768M and same, so should i increase to about 1G ? I' m using mysql service separately so my database server is different from Web. It works just for database. My server has 48GB DDR3 1333 MHZ ECC Ram and 2 x Intel Xeon X5650 Cpu (total 24 core - 12 mb cache). Also, 4X300 GB SAS HDD @ Raid 10 So, i can increase all of my limits for run mysql optimized and server must be use all sources for mysql. But, mysqltuner says "Increasing the query_cache size over 128M may reduce performance" What mean this ? Thanks.