On 09/17/2012 09:53 PM, Youquan Song wrote:
The prediction for future is difficult and when the cpuidle governor prediction fails and govenor possibly choose the shallower C-state than it should. How to quickly notice and find the failure becomes important for power saving. cpuidle menu governor has a method to predict the repeat pattern if there are 8 C-states residency which are continuous and the same or very close, so it will predict the next C-states residency will keep same residency time.
Could I convince you to try out my variation on detect_repeating_intervals? :) http://people.redhat.com/riel/cstate/cstate-stddev-converge.patch I suspect that small change might help your code adapt to changed conditions even faster. -- All rights reversed -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
