MySQL Slow Conncections

One of our clients had a performance issue with slow connections to its MySQL database.
The system configuration is MySQL 5.1 on Red Hat, and the application Java/Tomcat based and ORM is done using iBatis.

Several things can be done to solve this issue (make the open connection in few ms instead of 9 seconds) :

1. Use skip-name-resolve in my.cnf file in order to avoid DNS queries that slow down the connections (my.cnf example can be found in http://forums.mysql.com/read.php?11,28690). Another work around can be writing the host resolve in the server hosts file.
   
2. Use MySQL Connector/j 5.1.17 that makes iBatis run faster twice than 5.1.16.
   

That's all for now, feel free to add your recommendations

Keep Performing,
Moshe Kaplan. RockeTier. The Performance Experts.