First, download source code from:
http://dev.mysql.com/downloads/mysql/
Select your version and select “Source Code” from platform dropdown.

Then untar, enter the “sql-bench” directory and execute:

./run-all-tests --server=mysql --cmp=mysql,pg,solid --user=youruser --password=yourpassword --log

The test will take some time, anyway log files are available in the “output” folder with detailed informations about tests being performed.