Latency

I'm not sure where to look for, or, how I would know if I get any latency errors. I have all my stepper motors connected to my Mesa 7i96s card. I have the stepper motors sitting on my desk so I can test the setup and direction before I actually install them on my router. I ran the sample program provided by LinuxCNC which makes the LinuxCNC sign. I ran it at 191% feed rate and it ran through the entire program without any problems. I'm assuming there were no errors but again, I'm not sure what to look for if there is an error. I was thinking I could download another program that would run longer and run it at 191% to see if I get any errors. Any thoughts or suggestions?

Thanks for your reply tommylight. Ya everything went just fine. It zoomed right through it. I'm about ready to mount the motors to the machine. Just have a few things to work on regarding the homing and limit switches.