Re: [PATCH v2 net-next 1/4] net: implement support for low latencysocket polling

[Eliezer Tamir]

On 20/05/2013 19:22, Andi Kleen wrote:
> > diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
> > index f98ca63..cfcf0ea 100644
> > --- a/Documentation/networking/ip-sysctl.txt
> > +++ b/Documentation/networking/ip-sysctl.txt
> > @@ -19,6 +19,11 @@ ip_no_pmtu_disc - BOOLEAN
> >   	Disable Path MTU Discovery.
> >   	default FALSE
> >
> > +ip_low_latency_poll - INTEGER
> > +	Low latency busy poll timeout. (needs CONFIG_INET_LL_RX_POLL)
> > +	Approximate time in ms to spin waiting for packets on the device queue.
> > +	default 0
>
> Can you document the suggested value here?

ok
> Also I would add something like "may increase power usage"

:)
> The other thing I would add is a linuxmib statistic counter so that
> we can see the polling happens.

Yes,
I will add a counter for packets that were received through this path.

Eliezer
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