3 ms·
Potentially minimal is probably more accurate. It's workload dependent. In some cases, such as frequent interrupts or system calls on older CPUs without the PCI
by EgoIncarnate 9y ago
Potentially minimal is probably more accurate. It's workload dependent. In some cases, such as frequent interrupts or system calls on older CPUs without the PCID and INVPCIB features to mitigate the cost, it can be be very expensive.