Cacti - http://www.cacti.net/

Exported Graphs

Graph - Concurrent Viewers on CPUTTV @ live.cput.ac.za
Hourly (1 Minute Average)

Daily (5 Minute Average)

Percona Daily (5 Minute Average) RRA

Weekly (30 Minute Average)

Percona Weekly (30 Minute Average) RRA

Monthly (2 Hour Average)

Percona Monthly (2 Hour Average) RRA

Yearly (1 Day Average)

Percona Yearly (1 Day Average) RRA