percona-server-server 5.6.22-rel71.0-0ubuntu4 (amd64 binary) in ubuntu xenial

 (metapackage depending on the latest version)
 This is an empty package that depends on the current "best" version of
 percona-server-server (currently percona-server-server-5.6), as determined
 by the Percona Server maintainers. Install this package if in doubt
 about which Percona Server version you need. That will install the version
 recommended by the package maintainers.
 .
 Percona Server is a fast, stable and true multi-user, multi-threaded SQL
 database server. SQL (Structured Query Language) is the most popular database
 query language in the world. The main goals of Percona Server are speed,
 robustness and ease of use.