RT cRIO-9025 CPU Usage

Hello,

We are using cRIO-9025 and want to capture the CPU uage of it.  We can use the "RT Get CPU Loads.vi".  However, if we are calling this function @1HZ then we also want to get the maximum CPU usage during this 1 sec time.  

I believe this function only provides the instaneous CPU usage.  Is there any other function we can use to get Max. CPU usage for a period of time?

Regards,

Jagan