Interrupt latency and interrupt response in uc/os

[jason_bill]

Hi there

I can't understand relation between interrupt latency and interrupt response!

In uc/os manual it's mentioned that interrupt latency = max(interrupt disable time)
and interrupt response = interrupt latency + ... !

If interrupt response means that the time that takes from an interrupt occurred to start its ISR, during that handler is in ISR whether interrupt disable or not, that ISR handled in a same time, so interrupt response is the same for any interrupt latency, isn't it?

Would you explain to me? i can't understand this relationship!

Thanks.
jason

 

[Vengateswaran]

Interrupt response is that the amount of time to come out of actual operation to ISR. Interrupt latency is amount of time taken by OS in servicing the interrupt..