Pedro, please do not top post and please fix your mailer to do proper linewraps at around 78 chars. On Fri, 3 Jul 2009, Pedro R wrote: > The posixcputmr/0 and watchdog/0 seem to be running at a higher > priority! Is this normal? Yes, but they do not interfere and are not the cause of your latency problems. > I looked at the distribution of the jitter and these are very rare > spikes. I ran cyclictest with 5 threads for 30000 cycles and the > delay is always around 10-35 us except when there is a spike, which > goes from 1000 to 7000us. These spikes are one-time ocurrences - > they only last for one sample and sometimes only one of the threads > is delayed, on other occasions 2 or 3 threads are delayed... Can you please add "nohz=off" to the kernel command line and check whether the problem persists ? Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
