cpuidle - minimum time for sleep

manty kuma mantykuma at gmail.com
Thu Oct 9 23:22:55 EDT 2014


>> Does anybody know what is the minimum expected time for sleep period
>> with the cpuidle ?
By sleep period do you mean sleep time for complete device or only for
cpu's? If you want to check for device as a whole, you can see the print in
the kernel log. If you want to check programmatically,
suspend_devices_and_enter() is the function.

On Fri, Oct 10, 2014 at 4:01 AM, <Valdis.Kletnieks at vt.edu> wrote:

> On Thu, 09 Oct 2014 21:28:23 +0300, Ran Shalit said:
>
> > Does anybody know what is the minimum expected time for sleep period
> > with the cpuidle ?
>
> Both processor dependent and sleep level dependent.  There's a certain
> amount of latency induced by the hardware waking up.
>
> Look at /sys/devices/system/cpu/cpu*/cpuidle/state*/latency
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20141010/a7f56b72/attachment.html 


More information about the Kernelnewbies mailing list