On 28.04.2013 13:53, Carsten Emde wrote: Hi Carsten, > We, therefore, configure and enable continuous latency > monitoring histograms (CONFIG_WAKEUP_LATENCY_HIST and > CONFIG_MISSED_TIMER_OFFSETS_HIST) by default in all our farm systems > since more than two years (https://www.osadl.org/?id=864), and we are > not aware of any problem that might be related to them. The problem is our systems that started to exhibit this problem did have just these enabled :( Many more were compiled in. Your continuous test farm is impressive! A suggestion: would it be possible to also add a dmesg and more of the /proc/timer_list output to the profile pages? This would make comparing with the own system even easier. For example the Geode system at https://www.osadl.org/?id=948 : how did you convince it to use highres timers? In my environment the Geode LX / CS5536 needs tsc=reliable, but your kernel command line does not contain it. Thanks -- Stano -- 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