Hi, AFAIK. If you enable CONFIG_NO_HZ, then there is no meaning of HZ. If CPU is heavy loaded it run with 10ms, and it idle then timer tick is off. 2. drawback of dynamic CONFIG_NO_HZ tick a) slow response (less interactive system) On Fri, Jun 29, 2012 at 9:36 AM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote: > Hi... > > On Thu, Jun 28, 2012 at 6:21 PM, solmac john <johnsolmac@xxxxxxxxx> wrote: >> Thanks for reply >> >> what is CONFIG_NO_HZ > > it enables so called dynamic tick.... > >> can we enable CONFIG_NO_HZ and CONFIG_HZ both in our config > > yup...that's fine...even better, it's recommended nowadays to reduce > power consumption at certain degree. > >> and what the drawback of dynamic CONFIG_NO_HZ tick. > > uhm, some people said to me that in certain combination, config_no_hz > will introduce higher latency. This is due to the cost of occasional > timer rearming, instead of classic approach where timer is programmed > to shot regularly. But, if your setup is not very latency sensitive, > the overhead is most likely negligible. > > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com > training: mulyaditraining.blogspot.com > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
