DPC Time

Exists in Windows NT/2000/XP only. It is a placeholder for deferred procedure calls (DPC) statistics. It also has pseudo threads for each CPU in System. You can see how much time CPUs "live" in DPC in "CPU" and "CPU %" columns and how many DPCs per second are processed by each CPU in "Sw/s" field. DPC is a next step in processing after interrupt. It has lower "hardware" priority than interrupt state and not blocks interrupts processing. Note that DPC blocks execution of threads on the same CPU.