> Update the document for empty poll API. > > Signed-off-by: Liang Ma <liang.j...@intel.com> > --- > doc/guides/prog_guide/power_man.rst | 90 > +++++++++++++++++++++++++++++++++++++ > 1 file changed, 90 insertions(+) > > diff --git a/doc/guides/prog_guide/power_man.rst > b/doc/guides/prog_guide/power_man.rst > index eba1cc6..056cb12 100644 > --- a/doc/guides/prog_guide/power_man.rst > +++ b/doc/guides/prog_guide/power_man.rst > @@ -106,6 +106,96 @@ User Cases > > The power management mechanism is used to save power when > performing L3 forwarding. > > + > +Empty Poll API > +-------------- > + > +Abstract > +~~~~~~~~ > + > +For packet processing workloads such as DPDK polling is continuous. > +This means CPU cores always show 100% busy independent of how much > work > +those cores are doing. It is critical to accurately determine how busy > +a core is hugely important for the following reasons: > + > + * No indication of overload conditions > + * User do not know how much real load is on a system meaning > + resulted in wasted energy as no power management is utilized
User does not know how much real load is on a resulting in wasted energy as no power management is utilized > +API Overview for Empty Poll Power Management > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > +* **State Init**: initialize the power management system. > + > +* **State Free**: free the resource hold by power management system. > + > +* **Update Empty Poll Counter**: update the empty poll counter. > + > +* **Update Valid Poll Counter**: update the valid poll counter. > + > +* **Set the Fequence Index**: update the power state/frequency > mapping. Spelling above: Fequence/ Frequency
