Hi, i'm trying to estimate the interrupt latency (time between hardware interrrupt and the start of the ISR) of a linux kernel 2.4.29 and i used a simple tecnique: inside the do_timer_interrupt i read the 8259 counter to obtain the elapsed time. By this mean i found a latency of about 6/7 microseconds that is very similar to the time measured in some articles but with CPU much slower while i expected the latency was shorter on faster CPUs. So, my questions are: 1)what's the depency between the interrupt latency and the CPU speed? 2)what are the factors at the origin of th interrupt latency?
Than u very much Francesco Oppedisano - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/