[Click] why do we add idle->Todevice with each PollDevice ?

[Eddie Kohler]

(1) If you add "Idle -> ToDevice(X)", that shouldn't actually take
very much CPU.

(2) BUT you are right. I think maybe this message is left over from an
older version of Click. Is anyone using polling device drivers? Can
anyone confirm whether or not ToDevice helps performance in a
sniffer-only PollDevice configuration?

Eddie



On Mon, Nov 14, 2011 at 9:24 AM, ahmed A. <amego83 at gmail.com> wrote:
> hello,
>
> Please could any one explain to me why do we add Idle-> ToDevice (eth0) to
> a configuration file, when we have PollDevice(eth0) running on the same
> interface ?
> I got warning messages saying without the Idle-> ToDevice (eth0), I will
> get Bad performance , why is that? I would expect adding a ToDevice will
> consume some
> CPU cycles and degrade the performance rather than improving it ....
>
>
> I would appreciate any help or tips.
>
> Thanks,
> Ahmed
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