3 ms·
My ISRs execute under 15 µs, some are as fast as 2 µs. I'm well aware of the DPC queueing. > ISR shouldn't run longer than 25 microseconds Weird, I think I re
by vardump 4y ago
My ISRs execute under 15 µs, some are as fast as 2 µs. I'm well aware of the DPC queueing.
> ISR shouldn't run longer than 25 microseconds
Weird, I think I read 50 microseconds somewhere else. Maybe I just remember it wrong?
> 0.5 ms is an order of magnitude off. Not something going from 800 MHz to locked 4 GHz will fix.
0.5 ms is actually not that far fetched with higher priority interrupts masking and the delay for Windows ISR dispatching. There are also SMM missing time black holes occasionally.
Windows isn't a real-time OS for sure! Although can't blame SMMs on Windows.