MySQL 5.5.8 ga brings great improvements and improvements. This is a very noteworthy version. Percona Server is a derivative version of MySQL, which improves performance, stability, and manageability.
Recently, the percona team published an article to compare the two in detail. percona said that it not only considers the performance peak issue, but also includes the performance stability and predictability, percona server has an adaptive checkpoint algorithm. Percona also said that the version of percona server/xtradb Based on the MySQL 5.5 code baseline will be released. Currently, version 5.5.7 has been released, but it is still in beta testing status and can be downloaded from launchpad.
The evaluation results show that the performance of percona server fluctuates less.
Refer:
MySQL 5.5.8 and percona server: being adaptive
Http://www.mysqlperformanceblog.com/2010/12/20/mysql-5-5-8-and-percona-server-being-adaptive/
Performance Comparison Between percona server and MySQL 5.5
Http://www.oschina.net/news/13967/mysql-5-5-8-and-percona-server-being-adaptive