On Tue, 18 Jun 2013, Paul E. McKenney wrote: > +online to handle timekeeping tasks in order to ensure that system > +calls like gettimeofday() returns accurate values on adaptive-tick CPUs. > +(This is not an issue for CONFIG_NO_HZ_IDLE=y because there are no running > +user processes to observe slight drifts in clock rate.) Therefore, the > +boot CPU is prohibited from entering adaptive-ticks mode. Specifying a > +"nohz_full=" mask that includes the boot CPU will result in a boot-time > +error message, and the boot CPU will be removed from the mask. Note that > +this means that your system must have at least two CPUs in order for > +CONFIG_NO_HZ_FULL=y to do anything for you.
These are some important point here. Very good. Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
