Error Establishing Connection to Database while hammering server w/ apache bench

Does anyone here know much about mysql not working/dieing while using apache benchmark? I just ran a test to see what my server can do and while the test is running went to my site and got the “error connecting to the database”. What can I do? Do I need to upgrade the server? I am running godaddy’s premium vps. here are the specs of the server: http://www.godaddy.com/hosting/virtual-dedicated-servers.aspx?ci=9013