This is the name of a specific resource-consuming entity on the device -- Cisco's example is the 'IP Input' process -- that ERM tracks individually for its share of resource utilization. Tracking utilization at this per-process granularity is what lets an admin identify which specific process is responsible for a spike in overall CPU or memory usage, rather than seeing only an aggregate device-wide number. If overall CPU utilization spikes to 95 percent, checking the resource user table for entries like IP Input or BGP Router with unusually high usage values is how an admin finds the actual culprit process.