You can view the statistics of your instances on your Gandi interface by going to the “Services” tab, then “Servers”, followed by “Statistics”.
On this page, you can see the CPU usage stats, disk I/O, and network interfaces. The interface will allow you to select statistics of several servers so that you can compare them side-by-side, even if they are in different datacenters. If you move your mouse cursor over the graphs, you will see more information about the particular values. The statistics are currently gathered every 5 minutes.